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ORBTRACK 1.0A
For Windows
Shareware Release
Users Guide
Windows Software for Tracking Amateur Radio Satellites
KE9PU Software
ORBTRACK for Windows - Version 1.0A
Shareware Release
(C) Copyright 1994 Albert E. Kolvek Jr
KE9PU Software
All Rights Reserved
This software may be copied for your personal use and
may be distributed for use by others as long as the program
credits are maintained.
Information in this manual is subject to change
without notice and does not represent a commitment on the part
of KE9PU Software.
KE9PU Software may make improvements and/or changes
in this manual and/or in ORBTRACK at any time.
This program has been scanned for viruses before
release to the public. The creator of ORBTRACK assumes no
liabilities for damage to the end user's computer system or
other equipment where this product may be installed. Release
1.0A of ORBTRACK is issued to the general public under the
Shareware concept. The user assumes all responsibilites in
using this program.
Through this manual are commercial names of products
or services rendered by other manufactures or developers. Many
of these product or service names are either registered or
unregistered trademarks of their manufacturers or developers.
The owners of these trademarks have never expressed any approval
or disapproval of KE9PU Software products.
Windows 3.1 (C) Copyright 1985-1992, Microsoft Corp.
Table of Contents
Chapter 1: Introduction to ORBTRACK 1.0A for
Windows.............1
Overview..................................................
..................... 1
Chapter 2: ORBTRACK
Installation............................................. 2
Installation..............................................
...................... 2
Required
Files............................................................
... 3
Chapter 3: ORBTRACK Main
Screen...........................................4
Screen
Sections.........................................................
.. 4
Program Function
Controls............................................ 4
Add Target Control
Button............................................. 5
Remove Target Control
Button....................................... 5
Ground Station
Control.................................................. 6
System Setup
Control................................................... 7
Exit
Control..........................................................
........ 7
Minimizing
OrbTrack..................................................... 7
Display Grids Control
Panel........................................... 8
Target Display Control
Panel.......................................... 9
Ground Station
Panel.................................................... 10
Target Tracking Data
Display......................................... 10
Target
Icons............................................................
..... 11
Chapter 4: Target Elements
Editor.............................................. 12
Element Editor Control
Buttons...................................... 13
Element Set
Fields........................................................ 14
Element Set Data
Sources............................................. 16
Chapter 5: Ground Station
Editor................................................ 17
Ground Station Editor Control
Buttons............................ 18
Ground Station
Fields.................................................... 19
Chapter 1: Introduction to ORBTRACK 1.0A for Windows
Overview
This manual contains information for the use of
ORBTRACK 1.0A for Windows. It provides the user with:
Instructions on installing the program on your hard
disk.
Familiarizes the user with the operation of the
program.
Explains the main display controls and buttons.
Explains how to install and remove tracking targets
(satellites).
Explains how to setup your ground (Tracking)
station indicator.
Explains the target and ground station data editors.
The rest of this chapter covers the various aspects
of the ORBTRACK system.
ORBTRACK is a Windows based satellite tracking
program. The program will track up to eight targets
(Satellites) at once. Information about the targets are
continuously updated each second. Tracking continues even if
the program is minimized to an icon. The user has the option to
set an audible alarm to be sounded when the target comes "In
Range" of the ground or tracking station.
Each target is represented on the map as an icon.
Each icon generally represents the physical shape, or type, of
the target being tracked. The program has six predefined icons
that the user can manually assign to a specific target type or
shape. The targets can be "Tagged" for easy location and
identification on the display. To help the user further to
locate many targets on the display against the background, the
program provides a target blink display function. The blink
function tends to draw the eye faster to the targets on the
screen.
The program comes with hundreds of preloaded ground
station coordinates.
Dozens of satellite orbital elements are included in
this package to get the user started. Orbital Keplerian
Elements have been loaded for all amateur radio satellites and
the Russian space station MIR. These orbital elements will need
to be updated on a regular basis to compensate for programmed
orbit changes, atmospheric changes and other conditions that
effect the satellites.
Chapter 2: ORBTRACK Installation
ORBTRACK 1.0A for Windows will only run using
Microsoft Windows 3.1. The program is not guaranteed to be free
of bugs if run on Windows 3.0. As of the time of publication,
"Chicago" (Windows 4.0?) has not been released and as a result,
the program has not been checked using this platform.
ORBTRACK 1.0A will need about 1.5Mb of disk space to
be loaded to. Several of the files need to be inserted into the
WINDOWS and WINDOWS\SYSTEM subdirectories. The SETUP program
included in this disk will need to have access to these
subdirectories.
For proper operation of this program, the dos program
SHARE must be included in your CONFIG.SYS or AUTOEXEC.BAT file.
The SHARE program must be installed with the /F:500 option
command switch included.
For Example; In your AUTOEXEC.BAT file the command
should look like this:
SHARE /F:500
Installation
Installation of ORBTRACK is simple. Each dialog box
in the installation process is clear and self-explanatory;
Follow each of the on-screen instructions and prompts.
To install ORBTRACK 1.0A for Windows:
1. Insert the Program Disk into the proper diskette
drive.
2. With Windows running, click on "File" in the
Program Manager screen.
3. Click on "Run.." in the pull down menu.
4. Type A:SETUP or B:SETUP into the Command Line text
box.
5. Click on OK or press Enter
ORBTRACK Setup will now install the program modules,
create the Program Manager Group and Program Properties for you
and get you ready to run.
The SETUP program is preloaded with /ORBTRACK as the
installation subdirectory. If you do not want to have the
program installed in this one, enter the path name for the
subdirectory of your want and click on OK.
SETUP will finish installing the software and check
the CONFIG.SYS and/or AUTOEXEC.BAT files for the presents of
SHARE /F:500. If the share command cannot be found, the SETUP
program will display a message box informing you that SHARE
needs to be installed. Consult you DOS Users Guide for
instructions on how to install SHARE.
Required Files
The following list are the files distributed in this
package:
File Name Usage Destination Directory
GRID.VB_ Program Support File WINDOWS/SYSTEM
MSMASKED.VB_ Program Support File WINDOWS/SYSTEM
SPIN.VB_ Program Support File WINDOWS/SYSTEM
THREED.VB_ Program Support File WINDOWS/SYSTEM
MSAES110.DL_ Program DLL File WINDOWS/SYSTEM
MSAJT110.DL_ Program DLL File WINDOWS/SYSTEM
VBDB300.DL_ Program DLL File WINDOWS/SYSTEM
SHARE.EX_ SHARE Program WINDOWS/SYSTEM
ORBTRACK.EX_ OrbTrack Program ORBTRACK
CITYS.LD_ Ground Station Data ORBTRACK
CITYS.MD_ Ground Station Data ORBTRACK
SATS.LD_ Target Elements Data ORBTRACK
SATS.MD_ Target Elements Data ORBTRACK
SATx.IC_ Target Icons 1-6 Files ORBTRACK
ORBTRACK.CF_ OrbTrack Config File ORBTRACK
SETUP.EXE Installation Program None
VER.DL_ Program DLL File WINDOWS/SYSTEM
SETUPKIT.DL_ Installation DLL File None
VBRUN300.DL_ Program DLL File WINDOWS/SYSTEM
SETUP.LST Installation Support None
SETUP1.EX_ Installation Program None
ORBTRACK.WR_ Documentation ORBTRACK
README.1S_ Read Me First File ORBTRACK
Don't forget to install: SHARE /F:500 !!
Chapter 3: ORBTRACK Main Screen
Screen Sections
The main screen is divided into six sections. Each
section either controls a display option or provides current
tracking information. All data is updated once a second. You
have may display options to choose from and options are placed
into sections. Each section will be covered individually in
this chapter.
Program Function Controls
This section controls which targets are to be
tracked, selects the ground tracking station and controls access
to the target and ground station editors. To activate a control
move the mouse to the control and click once. If the control
you clicked on has options, click on the down-arrow button that
appears below the control itself.
To cancel one of the Program Function buttons just
click on the same one or click on another control button. You
may also use the TAB key to select various buttons but you will
not be able to tab over to each buttons list section.
Add Target Control Button
Selecting this program function will allow you to add
a target to the tracking screen. Clicking on this control
button activates a pull-down list from which you may select the
satellite you want to track. Click the Down-Arrow button to
display the list of targets in the database. Select the target
you want by clicking on the name of the satellite. You may have
to scroll through the list by using the scroll buttons or you
can drag the slider tab button till to one you want appears in
the window.
If you select a target from the list that is already
on the screen the program will notify you in a window that a
duplicate has been chosen. The program will limit you to a
total of eight targets to be displayed at one time. If you try
to select more than eight targets, the system will pop-up an
error window to inform you of your selection.
Targets currently on the screen will not be affected
by changes made to the element database until they are first
removed and then re-installed on the display screen. Even
exiting the program and re-executing it will not change the
targets to the new element set.
All element data is stored in the file called
SATS.MDB and SATS.LDM. These files should be backed up after
every element update in the event of a system failure. The
Element files can be accessed via the Microsoft program call
ACCESS.
Remove Target Control Button
Click on this control button to remove any target
currently being tracked on the display. Selecting this function
will bring up a pull-down list that contains only the targets
currently being displayed. You may select the target to remove
by clicking on the name in the list box.
Note: Removing a target only removes it from the
display - not from any database. You must use the target editor
to remove a target from the database. See section xx.x for
instructions on how to remove a targets elements from the
database.
Ground Station Control
This control button is used to select location
parameters for the tracking station. Information is kept on
file about the stations name, latitude, longitude, height above
sea level, UTC time correction and minimum target elevation
requirements. The buttons pull-down list has the ability to
search the list of ground station based on the number of
characters entered in the text box portion of the pull down menu.
To select a different ground station, first click on
the ground station control button. Next, click on the pull-down
menu down-arrow button. The program will display an
alphabetical listing of all stations in the database. You now
have the option of using the scroll bars to move through the
list or you can click in the text box part of the pull-down menu.
To select a ground station from the list using the
scroll bars, scroll the list until the location you want
appears. You can now click on the name of the location
displayed and the system will display the location of the ground
station on the map.
To select a location using the text box portion,
click on the text box part of the pull-down menu. Start typing
the name or first few characters of the location you want. The
program will scroll the station list so that the names match the
characters you have typed in. When the location you want
appears in the pull- down list, click on it to make it the
current location that the program will use.
If you select the same ground tracking station that
is currently on the screen, that station and its parameters will
be removed from the screen. The program will use a default
location of 0 degrees latitude and 0 degrees longitude. A UTC
correction of 0 hours is used as a default value. The ground
target icon is remove from the display indicating no ground
target is selected.
When setting up or changing the location of the
ground station the display will blink the new location of the
ground target for a few seconds to let you locate it on the
display.
You must remove and re-install the ground station
selection after editing the stations parameters to make the
changes appear in the display. See section xx.x on editing
ground station parameters.System Setup Control
This program function control button is used to
access the target and ground station database editors and
general information about ORBTRACK. Clicking on this control
button pops up a pull-down menu were you can click on the editor
or information you want.
Click on the down-arrow button to display the
editor/information selections.
Click on the Edit Ground Station to activate the
ground tracking station editor.
Click on the Edit Target Elements to activate the
Satellite Elements editor.
Click on About OrbTrack to display general
information about the OrbTrack program. To cancel the OrbTrack
general information window click on the CANCEL button.
When using the editors or displaying OrbTrack
information, the display program is still running. Target
movements, proximity alarms all continue to function. Each of
the editors and the information displays can only be exited by
there EXIT or, in the case of the information window, CANCEL
buttons. Clicking on the main display portion of the screen
will not remove or cancel any editor or information window.
Exit Control
Use this program control button to exit OrbTrack and
go back to windows. When exiting the program automatically save
all current settings, targets and other internal parameters into
the ORBTRACK.CFG file. Restarting the program from windows
restores the data back into the program.
If the program is started and the main display show
garbage selections, delete the ORBTRACK.CFG file and restart the
program. If this occurs, you will have to reset the parameters
back to their original settings.
Minimizing OrbTrack
The program is designed to continue to track targets
even while minimized. If you set the In Range Alarm option the
program will alert you even if minimized. This allows you to do
other windows program while waiting to a satellite to come into
range and be alerted when this happens.
To minimize the program to an icon click on the upper
right window button.
Display Grids Control Panel
These option controls change the appearance of the
latitude and longitude grid placement on the tracking display.
You may choose to or not to display one or both grids at all.
You can change the grid setting with or without the grids being
visible.
Latitude On - Clicking this box will toggle the
latitude grids on or off. An "X" indicates that the grid is
turned on. The control arrows in the box below the latitude
grid control adjusts number of horizontal grids displayed. The
settings are in degrees. Settings available for you are; 10,
15, 30, 45 and 90 degrees. The higher the degree setting, the
fewer the grids displayed.
To adjust the number of degree for the grid click on
the up-arrow or down-arrow controls in the box. Up-arrow will
increase the degree value while the down- arrow decrease the
degree value. Either control will wrap the value if the next
click will surpass the ranges specified.
Longitude On - Clicking this box will toggle the
longitude grids on or off. An "X" indicates that the grid is
turned on. The control arrows in the box below the longitude
grid control adjusts number of vertical grids displayed. The
settings are in degrees. Settings available for you are; 10,
15, 30, 45, 90 and 180 degrees. The higher the degree setting,
the fewer the grids displayed.
To adjust the number of degree for the grid click on
the up-arrow or down-arrow controls in the box. Up-arrow will
increase the degree value while the down- arrow decrease the
degree value. Either control will wrap the value if the next
click will surpass the ranges specified.
The grid settings will be automatically save when you
exit OrbTrack and restore when the program is executed from the
Windows Program Manager.
Target Display Control Panel
This group of control options control the way targets
are displayed on the screen and control visual and audible
alarms when targets are within range of the ground station.
The target display options are turned on when an "X" appears in
the checkbox. Clicking on the desired option once will turn it
on. If already on, the option can be turned off by clicking on
the option again.
Target I.D. - This option puts a label on the screen
near each target and contains the name of the target within it.
This is very useful when tracking more than a few targets. The
labels will automatically shift positions when the target icons
reach the limits of the display so that the I.D.'s will be
always visible.
Target Blink - Setting this option will cause the
target icons to blink once a second. This is an aid to help you
visually lock onto the targets within the display section of the
main screen.
Aos/Los Range - (Acquisition/Loss of signal) This
option, when enabled, will change the target I.D. background
color from gray to yellow indicating that the target is in range
of the receiver. The target elevation must be equal to or
greater than the minimum elevation specified for the selected
ground station. For the target to consider optically visible
set the minimum ground elevation to 0 degrees. For radio
visibility, the minimum ground elevation may have to be set to
something greater than 0 degrees. Factors like antenna gain,
receiver sensitivity and other environmental conditions may
affect this setting.
In Range Alarm - Setting this option will enable the
system to give an audible alarm when the target is in range of
the ground station. This option is used in conjunction with the
Aos/Los Range option and is disabled when Aos/Los is disabled.
This option will alert you when a target is in range even if the
program is minimized. You can be doing other windows functions
while OrbTrack runs in the background and be alerted when any
target is in range. To turn the alarm off, click on this option
a second time.
Sort By Height - This option instructs the program to
sort all targets according to the their height above the ground.
Targets are arranged from lowest to highest. Target icons will
reflect the height by visible layering when passing on top of
each other. The sort option will disable itself once it has
sorted the targets. The sort operation will not take place if
already sorted. You must manually select this option again to
resort.
You can select sort even if the targets are already
sorted. The sort function will not execute until the targets
have changed height again.
Ground Station Panel
This panel is for ground station information only.
It displays the location of the ground station, it's latitude
and longitude and current time. It also displays current local
(PC) and UTC time.
If no ground station is select for the program the
location of the ground station is displayed as "No Ground
Station" and the UTC time is set the same as your PC's time (0
UTC Offset).
Note: No dates are displayed in this panel. UTC time
may be wrapped into the next day. The program internally
recognizes this fact in the orbit calculations.
Target Tracking Data Display
This section of the main screen displays current
target tracking information. Only the targets displayed on the
map will be listed in this window. The window will expand or
contract as the number of targets being tracked changes. All
tracking data values are updated once a second. Data that
appears in this window are defined as follows:
Target ID - The name or identification of the target
being tracked.
Latitude (Deg.) - Current latitude of the
sub-satellite point in degrees.
Longitude (Deg.) - Current longitude of the
sub-satellite point in degrees.
Range (km) - The distance in kilometers between the
ground tracking station and the target being tracked.
Elevation (Deg.) - The angle of elevation in degrees
above or below the tracking stations horizon.
Azimuth (Deg.) - The horizontal angle in degrees of
the target in respect to the ground station's horizon plane and
north reference (North = 0 degrees increasing clockwise from
North)
Height (km) - The altitude of the target in
kilometers from ground level.
Target Icons
The use of icons for target indicators give the user
a better visual relation ability to what is being displayed on
the tracking screen. OrbTrack incorporates six of the basic
satellite shape being used today.
Type 1 - Tri-star Shape - Oscar 10,13, etc
(AO-10,13,...)
Type 2 - Polyhedron Shape - Fuji Oscar 20 (FO12), etc.
Type 3 - General Shape Unknown - possibly RS-10/11 &
12/13
Type 4 - Rectangular - Microsats & others (DO-17,
WO-18, etc)
Type 5 - Space Shuttle - STS-xx Series
Type 6 - Other - Mir, Geos, Etc....
Chapter 4: Target Elements Editor
This screen is used to edit target orbital parameters
or "Keplerian Elements". The elements define the motion of the
satellite in orbit around the earth and are used by the program
to derive the current position of the target.
Satellites in low earth orbit, or ones that have
maximum orbit heights of less then 800 kilometers, should have
there orbit elements updated at least once every three to four
weeks to insure accurate tracking. This is due to changes in
drag brought on by changes in the density of the earths
atmosphere. For those in higher orbits, the elements should be
updated every three to four months. At higher orbits,
atmospheric drag is less of a problem.
When changes are made to the element set for a target
being tracked you must remove the target from the tracking
display and then re-install it to make the new element set
active. You can edit or add any target element set at any time
without affecting the current display. When editing, the
tracking routines and alarm options are still active and will
proceed as normal.
The element set is stored in Microsoft Access
Database format. You may access the database from programs
running outside of OrbTrack as long as they support the
Microsoft Access Database format.
Element Editor Control Buttons
Find - Clicking on this button will bring up a dialog
window where you will be asked to enter the name or
identification code for the satellite for which you'll be
editing its element set. You may enter a partial name or I.D.
in the box. Example: Typing "DO" in box and hitting Enter will
bring of the first satellite with DO in the first two character
positions - DO-17 (Dove). The software will find the closest
match and display its element set. The find routine is not case
sensitive. For example, "DO" and "do" will find the same
element set.
Edit - Click on this button to enable editing of the
currently displayed element set. The program enhances the
appearance of the element set text boxes and positions the
cursor into the first field to be edited. To get back and forth
between the various fields in the element set you can either
click on the field or use the Tab / Back Tab keys to move
around. To cancel an editing function click on the Cancel
button. Canceling an edit session will restore all element data
fields that were changed. To save any changes made click on the
Save button.
Add - This button allows you to add a new entry into
the target element set database. Clicking on this button tell
the program to clear all element fields in preparation for a new
entry. The cursor is set to the target ID field where you can
now enter the name or I.D. of the target. If you want to cancel
the add function, click on the Cancel button. To save the new
entry click on the Save button.
Delete - The Delete button is used to remove a
targets element set completely from the database. Once deleted,
the element set cannot be restored except by adding it back
manually. This button is only enabled in the edit node. As a
safety precaution you must; Find the element set to delete
using the Find function. Put the program in the edit mode by
clicking the Edit button. Then click the Delete button. You
will be required to indicate your desire to continue with the
delete by clicking on the Yes button of the popup delete
confirmation window. You can cancel the delete function by
clicking on the No button.
Cancel - This button is enabled for only the Add and
Edit functions. Clicking on this button will cancel the
addition of a new entry or cancel changes made to an existing
one.
Next - This button is used to scroll though the
various element sets in the database. Clicking on Next will
bring up the next target in the database in alphabetical order.
This button is not enabled during Edit or Add functions.
Previous - This button is used to scroll though the
various element sets in the database. Clicking on Previous
will bring up the previous target in the database in
alphabetical order. This button is not enabled during Edit or
Add functions.
Save - The Save button is used to save a new element
entry or any updates made to an existing one. The program
checks for missing element data and validates the various data
fields for proper values and syntax. If a data error is found
the program cancels the save and returns you to the edit/add
mode where you can make any corrections needed. This button is
enabled only during the Edit or Add functions.
Exit - Clicking on exit will close the editor window
and returns you to the tracking display. If you where adding or
editing an entry the program validated and saves any changes
before returning to the tracking display. This is the only way
to exit the editor.
Element Set Fields
All fields described in this section are required for
proper target tracking. Each field is described below along
with the data field size and range. Saving entered data will
cause the program to check for valid data and inform you if any
field has an error. Data is required for all fields except
where noted.
Target ID: - 1 to 30 Characters, Alphanumeric - This
field contains the name or identification of the target to be
entered and tracked. You can enter the name in either upper or
lower case. You may use the NASA ID or create one of your own.
Catalog #: - 0 to 99999 Numeric characters - This is
the catalog number of the target as assigned by NORAD/NASA. The
"U" or Unclassified part of the catalog number is not needed by
this program and is not entered.
Epoch Time: - Numeric, Formatted as YYDDD.TTTTTTTT -
This is the Year, Day and Time that the element set was derived.
The format is as follows: YY - Last two digits of the year
computed. DDD - The day of the year computed. T..T - The
time (Factional part of the day) since midnight when computed.
Element Set: - 0 to 9999 Numeric - The serial /
sequence number of the element set described.
Inclination: - 0 to 180 Degrees Numeric Format:
XXX.XXXX - Describes the orientation of the satellite's plane
with respect to the equatorial plane of the earth.
RA of Node: - 0 to 360 Degrees Format: XXX.XXXX -
Right Ascension of Ascending Node. Specifies the targets
orbital plane with respect to "Fixed" stars.
Eccentricity: - .0 to .9999999 Numeric - Describes
the elliptical properties of the targets orbit. "0" equal
circular and all others describe increased orders of ellipse.
Leading decimal often not show but is required for this program.
Arg of Perigee: - 0 to 360 Degrees Numeric -
Describes where the perigee of the satellite is located. 0 to
180 degrees means the perigee is located in the northern
hemisphere and 180 to 360 is located in the southern hemisphere.
Mean Anomaly: - 0 to 360 Degrees Numeric - Locates
the satellite in the orbital plane at epoch. 0 to 180 means the
target is headed towards apogee and 180 to 360 indicates
movement towards perigee.
Mean Motion: - -8 to +100 Rotations Per Day -
Indicates the number of rotations the target makes in one day.
Decay Rate: - +/- X.XXXXXXXX Numeric - This field
indicates the rate of decay in the satellite's orbit per day.
Indicates the amount of drag do to the earths atmosphere. Has
very little affect in position calculations.
Epoch Orbit Number: - 0 to 9999 Integer - The
target's revolution number when the orbital element was
calculated.
Target Type: - 1 to 6 Numeric - The Icon number that
best represents the satellite.
Last Revised - Date - Date element set was edited.
Assigned by the program.
Cannot be entered by the user.Element Set Data Sources
Element Sets can be located on some bulletin boards
around the country and on most popular services like Compuserve,
Prodigy, Internet and others. Most element set file formats use
what is called "NASA 2 - Line Element Set".
Other formats contain all the information required to
run this program.
A good source for current element sets is the
DRIG/AMSAT Datalink BBS in Texas. BBS number (214) 394-7438.
For more information on satellite tracking -
AMSAT-NA (AMSAT Technical Journal)
QST Magazine
CQ Magazine
ARRL Books and articles
Try it Out!
If you own a scanner capable of receiving the 2 meter
Amateur radio ban listen on 145.825 MHZ FM for DO-17 dove
satellite. This satellite is currently sending telemetry,
audible tones, and a voice synthesized message. The signal is
strong enough to be heard with an indoor antenna. Try it!
Chapter 5: Ground Station Editor
The Ground Station Editor allows you to make
additions and changes to the tracking station database.
Information in this database describes to the software where the
tracking station is located, its height above sea level, minimum
target elevation above the horizon and the number of hours that
the local time is relative to UTC or Universal Coordinated Time.
You can add new ground stations, edit current ones and delete
unneeded ones from the database. The Ground Station database
is in Microsoft Access format and can be manipulated by other
programs that support the Microsoft Access format.
If you have edited the current ground station data
you will need to remove and re- install the ground station on
the display screen in order for the new data to be used.
Ground Station Editor Control Buttons
Find - Clicking on this button will bring up a dialog
window where you will be asked to enter the name of the tracking
station for which you'll be editing its information. You may
enter a partial tracking station name in the box.
Example: Typing "Cr" in box and hitting Enter will
bring of the first location with Cr in the first two character
positions - Crown Point, IN. The software will find the closest
match and display its element set. The find routine is not case
sensitive. For example, "Cr" and "cr" will find the same ground
station.
Edit - Click on this button to enable editing of the
currently displayed ground station data. The program enhances
the appearance of the information text boxes and positions the
cursor into the first field to be edited. To get back and forth
between the various fields in the element set you can either
click on the field or use the Tab / Back Tab keys to move
around. To cancel an editing function click on the Cancel
button. Canceling an edit session will restore all data fields
that were changed. To save any changes made click on the Save
button.
Add - This button allows you to add a new entry into
the ground station database. Clicking on this button tell the
program to clear all data fields in preparation for a new entry.
The cursor is set to the City and State field where you can
now enter the name of the city or station. If you want to
cancel the add function, click on the Cancel button. To save
the new entry click on the Save button.
Delete - The Delete button is used to remove a ground
station completely from the database. Once deleted, the data
set cannot be restored except by adding it back manually. This
button is only enabled in the edit node. As a safety precaution
you must; Find the element set to delete using the Find
function. Put the program in the edit mode by clicking the Edit
button. Then click the Delete button. You will be required to
indicate your desire to continue with the delete by clicking on
the Yes button of the popup delete confirmation window. You can
cancel the delete function by clicking on the No button.
Cancel - This button is enabled for only the Add and
Edit functions. Clicking on this button will cancel the
addition of a new entry or cancel changes made to an existing
one.
Next - This button is used to scroll though the
various ground stations in the database. Clicking on Next will
bring up the next ground station in the database in alphabetical
order. This button is not enabled during Edit or Add functions.
Previous - This button is used to scroll though the
various ground stations in the database. Clicking on Previous
will bring up the previous station in the database in
alphabetical order. This button is not enabled during Edit or
Add functions.
Save - The Save button is used to save a new ground
station entry or any updates made to an existing one. The
program checks for missing data and validates the various data
fields for proper values and syntax. If a data error is found
the program cancels the save and returns you to the edit/add
mode where you can make any corrections needed. This button is
enabled only during the Edit or Add functions.
Exit - Clicking on exit will close the editor window
and returns you to the tracking display. If you where adding or
editing an entry the program validated and saves any changes
before returning to the tracking display. This is the only way
to exit the editor.
Ground Station Fields
All fields described in this section are required for
proper target tracking. Each field is described below along
with the data field size and range. Saving entered data will
cause the program to check for valid data and inform you if any
field has an error. Data is required for all fields except
where noted.
City, State/Country: - 1 to 30 Characters
Alphanumeric - Enter the name or City, State or Country where
you are located at. If an exact match to your location cannot
be found, use one that is closest to you. You are not limited
to cities and states/countries, you can create one that uses
your name or call sign.
Latitude: - -90 to + 90 Degrees - This is the
latitude in decimal degrees for where your ground station is
located. -90 to 0 puts you in the southern hemisphere while 0
to +90 degrees puts you in the northern hemisphere.
Longitude: - -180 to +180 degrees - This field
contains the longitude of your ground station in decimal
degrees. For stations located West of longitude 0 degrees,
this value is positive in nature. For those who are east of 0
degrees, this value is negative.
Ground Elevation: - -100 to + 99999 meters - Enter in
the height of your location in reference to sea level. This
value should be in meters. This figure is used by the program
in determining when a target is considered visible. It is also
used in the range calculation from grostatund ion to target.
UTC Correction: - -11 to +11 Hours - This integer
value is used to compensate your personal computer's clock for
Universal Coordinated Time. All calculations are based on UTC
time values. If your PC's clock is set to UTC then a correction
of "0" must be entered.
Minimum Target Elevation: - -10 to +45 degrees - This
field is used to compensate for irregularities found in signal
acquisition from a target. This value represents the minimum
elevation angle a target must be in before it is considered
visible. factors such as ducting can make a target radio
visible before it is actually above a physical horizon.
KE9PU Software
Albert E. Kolvek Jr.
5035 West 90th Lane
Crown Point, IN 46307
219.769.7047
Other OrbTrack Versions:
OrbTrack 1.0A - Shareware Release
OrbTrack 1.0F - Enhanced Version (Availible November,
1994)
. Keplerian Elements Loading from Downloaded Files
. Aos/Los Duration Times
. Next Pass Time
. More Preloaded Elements & Cities
. Frequency Database for Each Target
OrbTrack Plus - Advanced Version (In Development -
Write for release date)
. 1.0F Features
. Radio Control Functions
. Antenna Positioning Control Function