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- Path: sparky!uunet!gatech!prism!np4
- From: np4@prism.gatech.EDU (Nick Pomponio)
- Newsgroups: sci.electronics
- Subject: Re: RADAR, RADAR ECM, and RADAR ECCM
- Message-ID: <81297@hydra.gatech.EDU>
- Date: 22 Jan 93 13:30:32 GMT
- References: <Jan.20.12.40.11.1993.25528@trident.usacs.rutgers.edu> <107823@bu.edu> <1993Jan21.182213.5156@wkuvx1.bitnet>
- Organization: Georgia Institute of Technology
- Lines: 25
-
- In <1993Jan21.182213.5156@wkuvx1.bitnet> scottcr@wkuvx1.bitnet writes:
-
- }Question:
-
- }Since the radar is Doppler based; wouldn't the ECM device have to be
- }a transponder... with fast phase lock, sythesize pulses with the proper
- }offset frequency to correspond with the desired readout speed, and
- }transmit this with enough signal to prevent capture of the reflection?
-
- }Hmmm...
- }--
- }Chris Scott, C/E Public Radio, Western KY Univ, (502) 745-3834
- }SCOTTCR@WKUVX1.BITNET fx off: 745-2084 fx hm: 781-1232
-
- The ECM device can be a simple repeater applying amplitude modulation to
- the received signal. The AM frequency would be a function of the actual
- velocity, the desired (deception) velocity, and radar signal wavelength.
- Simple AM will produce two false velocity "targets"; the undesired one
- could be supprssed by using a single sideband AM scheme.
-
- --
- POMPONIO,NICHOLAS A
- Georgia Institute of Technology, Atlanta Georgia, 30332
- uucp: ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!np4
- Internet: np4@prism.gatech.edu
-