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PCTRACK
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1991-12-05
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0110
BASICS
PC-TRACK is a user friendly,
simple-to-use satellite tracking
package. It is designed to track up
to 8 satellites simultaneously on an
EGA Graphics screen using spherical
and mercator projections.
It allows easy input and maintenance
of object and observer data.
It can send predicted satellite
positions and look angles to printer
as desired.
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0100
0120
BASICS
PC-TRACK BASICS
In order to do satellite tracking,
PC-TRACK requires data on the
observation points and the objects to
be tracked. The two SETUP options
allow you to include all this
information.
- SETUP OBSERVERS -
The SETUP OBSERVERS option allows you
to maintain a file of observation
points to be used in tracking with the
information needed.
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BASICS (Continued)
- SETUP OBJECTS -
The SETUP OBJECTS option allows you to
maintain a file of the objects to be
tracked with the information required
(see the SETUP OBJECT help screens for
how to get the required information).
Once at least one observation point
and one object have been defined,
tracking may be done by selecting the
TRACK option from the MAIN MENU. After
selecting the OBJECT and OBSERVER from
those entered using the SETUP option,
tracking begins.
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1000
BASICS (Continued)
- TRACKING -
Track uses either the text or the EGA
graphics screen. In graphics, 3D
spherical or mercator projection
maps are provided. Tracking may be
done in real time and high speed.
Current tracking information is shown
both graphically and numerically for
all objects being tracked. Track
information may also be sent to a
printer. Display of track data is
also available on the Text screen
for systems without EGA displays.
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0100
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SETUP
The SETUP feature allows you to
enter and organize all the infor-
mation you need for tracking your
satellites... The 2 options available
are:
=> OBSERVER - Holds information on
up to 200 observation points.
=> OBJECTS - Holds information on
up to 200 objects.
[FOR PC-TRACK BASICS PRESS PGUP]
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1000
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SETUP OBSERVER
This option allows you to enter and
edit all the information you need for
all the observation points to be used
in tracking. The information needed
is:
- Description
- Longitude
- Latitude
- Time Zone
- Minimum Elevation
- Height in feet above MSL
This information is stored in a
observer file which may contain up
to 200 observers.
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SETUP OBSERVER (cont)
ADDING AN OBSERVER [F2]
Press the F2 key to add a new
observation point to the file.
DELETING AN OBSERVER(F3)
Press the F3 key to remove an
observation point from the file.
EDITING AN OBSERVER
Press PGUP or PGDN to select
observation point to edit.
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SETUP OBSERVER [Description]
This is a common name which will be
meaningful to you when you see it
later on the track screen. This
description should be unique among all
the observation points you have. This
description will show up on the screen
and in printouts whenever this
observation point is used.
This field may contain up to 30
characters.
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SETUP OBSERVER [Longitude]
Longitude is given in degrees West,
meaning the number given will be
positive for West longitudes and
negative for East longitudes. It is
entered degrees and decimal degrees
(84.325 for example).
Longitudes must be entered in the
range of 180 to -180 degrees.
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SETUP OBSERVER [Latitude]
Latitude is given in degrees North,
meaning the number given will be
positive for North latitudes and
negative for South latitudes. Like
longitude, it is given in degrees and
decimal degrees (34.21 for example).
Latitudes must be entered in the range
of 90 to -90 degrees.
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SETUP OBSERVER [Time Zone]
This field defines which time zone the
observation point is in.
This is defined in hours from
Greenwich Mean Time (Coordinated
Universal Time). It is negative for
West longitudes and positive for East
longitudes. (EST IS -5, PST IS -8)
West longitudes must be between -1 and
-12 and East longitudes must be
between +1 and +12.
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SETUP OBSERVER [Minimum Elevation]
This field defines the minimum
elevation the observer will be able to
see the object above the horizon. Some
locations may be surrounded by
mountains or buildings which limit how
low an object may be tracked. That is
defined here.
The minimum elevation is defined in
degrees and decimal degrees and must
be between 90 and -90.
During tracking, azimuth/elevation
data will be displayed only if the
computed elevation is greater or equal
to the stated value.
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SETUP OBSERVER [Height]
This field defines the height of the
observation point above Mean Sea
Level (MSL).
This number must be between -400 and
30000 Feet or between -121.92 and
9144 Meters.
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SETUP OBJECTS
This option allows you to enter
information about the objects. to be
tracked. The information needed is:
- Name
- Epoch (Year, Day and Fraction of
Day)
- Decay Rate (Rev/day/day)
- Inclination
- Right Ascension
- Eccentricity
- Argument of Perigee
- Mean Anomaly
- Mean Motion
- Revolution Number at Epoch
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SETUP OBJECTS [cont]
- WHERE TO GET SATELLITE DATA -
The data required for tracking
may be received at no cost from
NASA
Project Operations Branch
Code 513
Goddard Space Flight Center
Greenbelt, Md. 20771
Ask for the current "SATELLITE
SITUATION REPORT".
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SETUP OBJECTS [cont]
The Satellite Situation Report lists
almost every object currently in
orbit. Each object is cataloged by
the International Designation and by
Catalog number. It also lists the
name, launch date, orbital period in
minutes, inclination, apogee,
perigee, and transmitting frequency.
By using this document you can
determine the catalog numbers of the
objects you wish to track.
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SETUP OBJECTS [cont]
The information required can be
obtained by request-ing the "NASA
PREDICTION BULLETIN" for each of
the objects desired, referenced
by catalog number from the address
given above.
You may also request a package of
prediction bulletins for certain
catagories of objects such as
weather or amateur radio satellites.
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SETUP OBJECTS [cont]
ADDING AN OBJECT (F2)
Press the F2 key to add a new
object to the file.
DELETING AN OBJECT (F3)
Press the F3 key to remove an
object from the file.
EDITING AN OBJECT
Press PGUP or PGDN to select object.
Use the cursor keys to get to the
field you wish to edit.
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SETUP OBJECTS [Name]
This field should contain the common
name for the object described. This
name will appear on all screen
displays and printouts to describe the
object tracked.
The name field may contain up to 11
characters.
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SETUP OBJECTS [Catalog Number]
This is a 5 digit number assigned to
each object in the Satellite Situation
Report issued by NASA.
Enter this as a whole number between 0
and 99999.
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SETUP OBJECTS [Epoch Year]
This is the year the rest of the
element set is effective.
Epoch year should be entered in the
range of 1987 to 2001.
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SETUP OBJECTS [Epoch Day]
This is the day and fraction of day
the rest of the element set is
effective.
Enter this as a fractional number
between 0.0 and 366.9999999.
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SETUP OBJECTS [Decay Rate]
This is the rate of decay of the
orbital period due to atmospheric
friction and other factors measured
in terms of Rev/Day/Day.
Enter this as a decimal number. It
may be positive or negative.
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SETUP OBJECTS [Inclination]
This describes the angle of the
orbit plane in relationship to
the plane of the earth's equator.
Enter this as a decimal number of
degrees between 0.0 and 360.0.
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SETUP OBJECTS [Right Ascension]
This describes the point the sat-
ellite crosses the equator from
the southern hemisphere to the
northern hemisphere.
Enter this as a decimal number of
degrees between 0.0 and 360.0.
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SETUP OBJECTS [Eccentricty]
This is a unitless number which
describes the shape of the orbit.
The closer to zero the number is,
the closer to a perfect circle it is.
Enter this as a decimal number between
0.0 and 0.999999.
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SETUP OBJECTS [Argument of Perigee]
This is the number of degrees from
the ascending node the perigee point
occurs. Perigee is the point of
closest approach to the earth.
Enter this as a decimal number of
degrees between 0.0 and 360.0.
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SETUP OBJECTS [Mean Anomaly]
This number represents the angular
distance from the perigee point
to the satellite's mean position.
Enter this as a decimal number of
degrees between 0.0 and 360.0.
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SETUP OBJECTS [Mean Motion]
This is the number of complete rev-
olutions the satellite makes in
24 hours.
Enter this as a decimal number between
0.0 and 20.0.
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1270
SETUP OBJECTS [Revolution Number]
This is the number of revolutions
which have occurred since launch to
the epoch time and date.
Enter this as a whole number between
0 and 99999.
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2000
SETUP OBJECTS [Base Frequency]
This is the base transmitter freq-
uency (in megahertz) used by
the satellite. Enter whatever freq-
uency is useful for you. The freq-
uency displayed during tracking will
reflect shifts in frequency resul-
ting from doppler effects.
Enter this as a real number between
0.0 and 9999.999999.
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TRACK
The TRACK option is the heart of the
program. It computes and displays the
tracking information for the satel-
lite(s) selected and the current
relationship to the observation
point selected.
In order to do any tracking, at least
one object and one observation point
must be defined using the SETUP
option.
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TRACK [GRAPHICS]
The GRAPHICS option displays
graphically the computed data in
3D on a spherical projection of the
earth or on mercator projection maps.
Up to 8 satellites can be tracked
simultaneously. This option begins
with the user selecting the observa-
tion point, satellites, map and
globe view to use.
During tracking, you may change
the observation point and the map
used to display satellite data.
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TRACK [GRAPHICS]
SELECT OBSERVATION POINT
The default observ. point defined
in CONFIG SYSTEM will appear.
To change this, simply press
either the up or down arrow keys
until the name of the desired
observation point is shown.
Then press RETURN.
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TRACK [GRAPHICS]
SELECT MAP
The default map defined in the
CONFIG SYSTEM option will appear.
This is done simply by pressing
either the up or down arrow keys
until the name of the desired
map is shown.
Then press RETURN.
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TRACK [GRAPHICS]
SELECT GLOBE
The default map defined in the
CONFIG SYSTEM option will appear.
This is done simply by pressing
either the up or down arrow keys
until the name of the desired
map is shown.
Then press RETURN.
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TRACK [GRAPHICS]
SELECT OBJECTS TO TRACK
The default objects selected
in the CONFIG SYSTEM option
will appear.
To change these, simple do
the following:
Press UP or DOWN ARROWS until
the name of the desired object
is shown.
[MORE - PGDN]
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TRACK [GRAPHICS]
SELECT OBJECTS TO TRACK
Press PGUP or PGDN to move the
cursor to the next object slot.
There are 8 slots available.
Press HOME to remove the object
in the current slot.
Press RETURN when finished.
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TRACK [GRAPHICS]
FUNCTION KEYS AVAILABLE
[F1] HELP
[F2] REAL TIME / FAST TRACK
[F3] PAUSE TRACKING
[F4] ENABLE/DISABLE PRINTER
[F5] GRAPHICS SCREEN REFRESH
[F6] GROUND TRACK SELECT
[F7] SELECT NEW MAP/GLOBE VIEW
[MORE KEYS - PGDN]
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TRACK [GRAPHICS]
FUNCTION KEYS AVAILABLE
[CTRL F7] CHANGE PROJECTION
Spherical <-> Mercator
[ALT F7] CHANGE SIZE
Large/Small Maps or Globes
[F8] SELECT NEW OBSERVER
[F9] ENABLE/DISABLE AUTOMAP
[MORE KEYS - PGDN]
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TRACK [GRAPHICS]
FUNCTION KEYS AVAILABLE
[F10] SET DOS CLOCK
[LFT/RT/UP/DN ARROW KEYS]
Sets Date,Time,Increment.
[PGUP/PGDN]
Selects object to print.
[ESC]
Quit Tracking.
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TRACK [GRAPHICS]
[F2]
- REAL TIME / FAST TRACK -
Pressing F2 switches tracking modes
from Real Time Mode (tracking
according to the actual time of
day and date) to Fast Track Mode
(rapidly computing and dis-
playing satellite information).
The Fast Track mode enables the
use of the arrow keys to change
the date, time, and interval.
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TRACK [GRAPHICS]
[F2] (Cont)
With real time tracking, you can
plot the actual current position of
the satellites (assuming the date and
time in your computer are properly
set).
With Fast Track you can look
ahead or behind in time at the
satellite paths.
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TRACK [GRAPHICS]
[F3]
- PAUSE -
Pressing the F3 key causes all
tracking to cease until you again
press the F3 key.
Remember: Press F3 to PAUSE and
press it again to resume tracking.
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TRACK [GRAPHICS]
[F4]
- ENABLE PRINTER -
Pressing the F4 will enable output
to be sent to the printer while
tracking. When used with the Fast
Track mode (F2) it allows you to
rapidly print orbital predictions.
F4 operates like a "toggle".
Pressing it enables the printer,
pressing it again disables it.
PRINTING CAN BE ENABLED ONLY
IN FAST TRACK MODE.
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TRACK [GRAPHICS]
[F5]
- REFRESH GRAPHICS DISPLAY -
Pressing the F5 key will cause the
maps or globe view to be redrawn,
clearing out any ground tracks
or orbit tracks which may be there.
This is useful when the display
becomes cluttered from extended
tracking with ground track (GT)
enabled.
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TRACK [GRAPHICS]
[F6]
- GROUND TRACK -
In the ground track mode, the path
each satellite has taken is plotted
by marking each point computed.
There are 3 possible modes of
ground track...
DISABLED, IR, and CONT.
When disabled, printouts print only
points which are in range.
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TRACK [GRAPHICS]
[F6] (cont.)
The STATUS box will show:
- G.T. (IR) - This leaves a ground
track only when the satellite is
in range. Causes printouts to print
only points in range.
- G.T.(C) - This leaves a ground
track continuously. Causes print-
outs to print all points.
Pressing F6 once enables the IR
mode. Pressing again enables the
CONT mode. Pressing once again
disbles ground track again.
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TRACK [GRAPHICS]
[F7]
- SELECT NEW MAP -
(For mercator projections)
This is done simply by pressing
either the up or down arrow keys
until the name of the desired
map is shown.
Then press either ESC to keep
existing map or RETURN to select
the new map.
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TRACK [GRAPHICS]
[F7]
- SELECT NEW GLOBE VIEW -
(For spherical projections)
This is done simply by pressing
either the up or down arrow keys
until the name of the desired
globe view point is shown.
Then press either ESC to keep
existing map or RETURN to select
the new view.
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TRACK [GRAPHICS]
[CTRL F7]
- CHANGE PROJECTION -
Pressing this key changes the
type of projection used to display
the satellite position.
If spherical then the satellite
position will be displayed in 3D
as viewed from far out in space
over the equator at the longitude
selected.
Mercator projection used flat maps
for position display.
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TRACK [GRAPHICS]
[ALT F7]
- CHANGE SIZE OF MAPS/GLOBES -
Pressing this key changes the
size of the current map or globe.
If spherical projection is used, the
3D globe view will change size. If
Mercator projection is used, the size
of the map will change.
Small maps allow use of the Azimuth/
Elevation chart and numerical posi-
tion displays.
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TRACK [GRAPHICS]
[F8]
- SELECT NEW OBSERVER -
This is done simply by pressing
either the up or down arrow keys
until the name of the desired
observation point is shown.
Then press either ESC to keep
existing observer or RETURN to
select the new observer.
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TRACK [GRAPHICS]
[F9]
- AUTOMAP -
Pressing F9 will enable automatic
selection of the map or globe view
which the currently highlighted
(selected) satellite is visible in.
Pressing F9 again will disable
this feature and continue tracking
with the currently visible map or
globe view.
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TRACK [GRAPHICS]
[F10]
- SET DOS CLOCK -
This key will take the currently
displayed date and time and set
the DOS clock with them.
This allows you to easily change
the real time clock to a desired
date and time. The date and time
are changed by using the arrow
keys.
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TRACK [GRAPHICS]
[ARROW KEYS]
- CHANGE DATE, TIME, INCREMENT -
By using the Left and Right arrow
keys, a highlighted cursor will
move across the date, time, and
interval. (Press the Left arrow
key first if no portion is high-
lighted.)
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TRACK [GRAPHICS]
[ARROW KEYS] (cont.)
The currently highlighted segment
will increase when the Up arrow
key is pressed and will decrease
with the Down Arrow key.
This feature is active in Fast
Track only.
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TRACK [GRAPHICS]
[ARROW KEYS] (cont.)
It is useful to set the clock to
a specific date and time and
increment. It is used with F10 to
set the DOS clock to a new time.
By setting the increment to
00:00:00 and changing the time,
it is possible to examine specific
points in time at will.
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TRACK [GRAPHICS]
[PGUP/PGDN]
These keys select the object which
will have its data sent to the
printer if the printer is enabled
by the F4 key.
The selected object will be high-
lighted with a different color
than the rest of the objects.
THESE KEYS WORK ONLY WHEN PRINTING
IS DISABLED.
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2610
TRACK [TEXT]
The TEXT option displays the
computed information on a text
screen so that tracking can still be
done on systems without EGA displays.
The text track option also provides
the capability to print the computed
information on a printer.
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2620
TRACK [TEXT]
SELECT OBJECT TO TRACK
The default object (object number
1) defined in the CONFIG SYSTEM
option will appear.
To change this, simply press
either the up or down arrow keys
until the name of the desired
object is shown.
Then press RETURN.
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2610
2630
TRACK [TEXT]
SELECT OBSERVATION POINT
The default observ. point defined
in the CONFIG SYSTEM option appears.
To change this, simply press
either the up or down arrow keys
until the name of the desired
observation point is shown.
Then press RETURN.
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2620
2700
TRACK [TEXT]
PRINT ALL POINTS?
If set to YES, then all computed
points will be printed during
tracking when the printer is
enabled. Otherwise only the points
which are visible to the observa-
tion point will be printed.
Selected by the up or down arrow
keys.
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2710
TRACK [TEXT]
Functions available during track:
[F1] HELP
[F2] REAL TIME / FAST TRACK
[F3] PAUSE TRACKING
[F4] ENABLE/DISABLE PRINTING
[F5] NOT USED
[F6] NOT USED
[F7] NOT USED
[F8] NOT USED
[F9] NOT USED
[F10] SET DOS CLOCK
[ESC] QUIT TRACKING
2710
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TRACK [TEXT]
[F2]
- REAL TIME / FAST TRACK -
Pressing F2 switches tracking modes
from Real Time Mode (tracking
according to the actual time of
day and date) to Fast Track Mode
(rapidly computing and dis-
playing satellite information).
The Fast Track mode enables the
use of the arrow keys to change
the date, time, and interval.
2715
2710
2720
TRACK [TEXT]
[F2] (cont.)
Real Time tracking computes the
actual current position of the
satellite (assuming the date and
time in your computer are properly
set).
Fast Track allows you to predict
forward or backward in time.
This can be used with the printer
by pressing F4 to print satellite
orbital predictions ahead of time.
2720
2715
2730
TRACK [TEXT]
[F3]
- PAUSE -
Pressing the F3 key causes all
tracking to cease until you to
press the F3 key again.
Remember: Press F3 to PAUSE and
press it again to resume tracking.
2730
2720
2780
TRACK [TEXT]
[F4]
- ENABLE PRINTER -
Pressing the F4 will enable output
to be sent to the printer while
tracking. When used with the Fast
Track mode (F2) it allows you to
print orbital predictions.
F4 operates like a "toggle".
Pressing it enables the printer,
pressing it again disables it.
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2730
2790
TRACK [TEXT]
[F10]
- SET DOS CLOCK -
This key will take the currently
displayed date and time and set
the DOS clock with them.
This allows you to easily change
the real time clock to a desired
date and time. The date and time
are changed by using the arrow
keys.
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2795
TRACK [TEXT]
[ARROW KEYS]
- CHANGE DATE, TIME, INCREMENT -
By using the Left and Right arrow
keys, a highlighted cursor will
move across the date, time, and
interval. (Press the Left arrow
key first if no portion is high-
lighted.)
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TRACK [TEXT]
[ARROW KEYS] (cont.)
The currently highlighted segment
will increase when the Up arrow
key is pressed and will decrease
with the Down Arrow key.
This feature is active in Fast
Track only.
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3000
TRACK [TEXT]
[ARROW KEYS] (cont.)
It is useful to set the clock to
a specific date and time and
increment. It is used with F10 to
set the DOS clock to a new time.
By setting the increment to
00:00:00 and changing the time,
it is possible to examine specific
points in time at will.
3000
2000
3100
CONFIGURE
With this option, you may change some
of the various pieces of information
(parameters) which control how the
program operates. There are options
available here:
=> SCREEN
Screen colors parameters.
=> SYSTEM
Defaults, paths, and measurement
types.
=> PRINTER
Printer control codes.
3100
3000
3110
CONFIGURE SCREEN
With this option, you will be able to
define all the screen colors used
to display information on the screen.
This way you can get the screen
displays to look the way you want.
This also makes it easy to adjust
displays on monochrome monitors.
You are able to see the effects of
changes on the screen while you make
them. You can make hanges to both the
background and text colors with simple
key strokes.
3110
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3111
CONFIGURE SCREEN (Key Commands)
Information is displayed on the
screen using 7 different categories
for the text and background colors...
- NORMAL
- HIGHLIGHTED
- DATA ENTRY
- TITLE
- SCREEN COLOR
- SHADOW COLOR
Only the combinations actually used
are shown. The colors for both the
background and text colors can be
selected for each of these categories.
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CONFIGURE SCREEN (Key Commands)
=> SELECT TEXT COLOR CATEGORY
Using the Left and Right arrow keys
selects the category for text color
changes. Current category is shown
by a down arrow.
=> SELECT BACKGROUND CATEGORY
Using the Up and Down arrow keys
selects the category for background
color changes. Current category is
shown by a right arrow.
3112
3111
3200
CONFIGURE SCREEN (Key Commands)
=> CHANGE TEXT COLOR (F5)
Pressing this key changes the color
of the currently selected text
category. There are 16 colors to
choose from on a color monitor.
=> CHANGE BACKGROUND COLOR (F6)
Pressing this key changes the color
of the currently selected back-
ground category. There are 2 sets
of 8 identical colors. One set
causes the text to be non-blinking
and the other causes blinking text.
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3210
CONFIGURE SYSTEM
This option allows you to define the
default observer, map, and objects
used in the TRACK options.
It also allows you to indicate where
where on your system the program will
find the files it needs to operate.
You can also select what type of
distance measurements (METRIC or
ENGLISH) and time measurements (UTC
or LOCAL).
3210
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3230
CONFIGURE SYSTEM (Defaults)
SELECT DEFAULT OBSERVATION POINT
This is done simply by pressing
either the up or down arrow keys
until the name of the desired
observation point is shown.
Then press RETURN.
3230
3210
3240
CONFIGURE SYSTEM (Defaults)
SELECT DEFAULT MAP
This is done simply by pressing
either the up or down arrow keys
until the name of the desired
map is shown.
When the desired one is found
press RETURN.
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3250
CONFIGURE SYSTEM (Defaults)
SELECT DEFAULT GLOBE VIEW
This is done simply by pressing
either the up or down arrow keys
until the name of the desired
globe view is shown.
The name represents the longitude
of the globe view point on the
equator.
When the desired one is found
press RETURN.
3250
3240
3260
CONFIGURE SYSTEM (Defaults)
SELECT DEFAULT OBJECTS
Press UP or DOWN ARROWS until
the name of the desired object
is shown.
Press PGUP or PGDN to move the
cursor to the next object slot.
There are 8 slots available.
Press HOME to remove the object
in the current slot.
Press RETURN when finished.
3260
3250
3265
CONFIGURE SYSTEM (Data Path)
This line selects what disk
drive and what subdirectory on that
drive to use as the storage area for
the data files it uses. It will be in
the form of an MS-DOS path name. If
you just want to indicate the B drive,
just enter "B:" here. If you have the
program on your hard disk and it is
the C drive and you have a special
subdirectory called "\TRACK\DATA",
then you would enter "C:\TRACK\DATA"
on this line.
3265
3260
3270
CONFIGURE SYSTEM (Data Path)
NOTE:
IF YOU ENTER AN INVALID PATH NAME
(ONE THAT DOES NOT EXIST), THE PROGRAM
TELL YOU SO.
IF YOU CAN'T THINK OF ONE,
JUST PRESS CTRL-X (THE CONTROL KEY
AND THE X KEY AT THE SAME TIME). THIS
WILL JUST CLEAR OUT WHAT YOU HAVE AND
LEAVE IT BLANK. THIS WILL MEAN
THE PROGRAM WILL LOOK IN THE DIRECTORY
THAT IT IS LOCATED FOR THE DATA.
3270
3260
3275
CONFIGURE SYSTEM (MAP Path)
This line selects what disk
drive and what subdirectory on that
drive to use for the maps it uses.
It will be in the form of an MS-DOS
path name. If you just want to
indicate the B drive, just enter
"B:" here. If you have the
program on your hard disk and it is
the C drive and you have a special
subdirectory called "\TRACK\MAPS",
then you would enter "C:\TRACK\MAPS"
on this line.
3275
3270
3280
CONFIGURE SYSTEM (MAP Path)
NOTE:
IF YOU ENTER AN INVALID PATH NAME
(ONE THAT DOES NOT EXIST), THE PROGRAM
WILL TELL YOU SO.
IF YOU CAN'T THINK OF ONE,
JUST PRESS CTRL-X (THE CONTROL KEY
AND THE X KEY AT THE SAME TIME). THIS
WILL JUST CLEAR OUT WHAT YOU HAVE AND
LEAVE IT BLANK. THIS WILL MEAN
THE PROGRAM WILL LOOK IN THE DIRECTORY
THAT IT IS LOCATED FOR THE DATA.
3280
3270
3290
CONFIGURE SYSTEM (Use Metrics?)
This selects which type of
measurement system to display dis-
tances with.
If METRIC then all distances are
displayed in either METERS or KILO-
METERS. If ENGLISH then they are
displayed in either FEET or MILES
(Statute).
Use the INSERT key to change it.
Press RETURN when done.
3290
3280
3300
CONFIGURE SYSTEM (Use UTC?)
This tells the program whether or not
to use Coordinated Universal Time
(UTC) or Local Time for computing
and displaying satellite data.
If UTC, then all times and dates
will be displayed in UTC time. If
LOCAL, then the Local timezone de-
fined in SETUP OBSERVERS will be
used.
Use the INSERT key to change it.
Press RETURN when done.
3300
3200
3310
CONFIGURE PRINTER
This option allows you to change the
control codes sent to your printer to
make it print the reports correctly.
3310
3300
3311
CONFIGURE SYSTEM (Printer Codes)
Printer codes are sequences of special
control characters sent to your
printer. They are displayed and edited
them from you as the decimal equiv-
alents of each control character sep-
arated by a slash (/). For example the
ESC character has a decimal value of
27 so it is shown on the screen that
way. Notice some print commands have a
code sequence to turn it on and one to
turn it off. Some codes do not need to
be turned off.
3311
3310
4000
CONFIGURE SYSTEM (Printer Codes)
Some printers may not be capable of
printing certain features shown on the
screen, in that case, leave the CODE
TO TURN ON blank for that feature.
You have up to 20 characters to define
the turn-on or turn-off codes,
including the slashes.
You may move the cursor around on the
screen to the desired code sequence by
using the arrow keys or just pressing
RETURN.
4000
3000
1000
QUIT
This option allows you to quit
the program and return to MS-DOS.