Article View: sci.electronics
Article #16208Re: RADAR, RADAR ECM, and RADAR ECCM
From: Nick Pomponio
Date: Fri, 22 Jan 1993 13:30
Date: Fri, 22 Jan 1993 13:30
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1474 bytes
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
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Path: arc1-ca.pugleaf.net!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