repeater jammer

repeater jammer

[ri′pēd·ər ‚jam·ər]
(electronics)
A jammer that intercepts an enemy radar signal and reradiates the signal after modifying it to incorporate erroneous data on azimuth, range, or number of targets.
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References in periodicals archive ?
Our ideas for the deception scheme crystallized around a small, simple, and cheap repeater jammer, which we called the DAJ [Distributed Area Jammer], which would fit on a telegraph pole and run off main power.
More sophisticated is the repeater jammer, which captures and then re-radiates a portion of the enemy's transmission.
It then uses signal algorithms on a 386 chip to determine whether it is incoming or outgoing and employs a repeater jammer to send a signal back to the shell, causing it to be detonated at a much higher elevation.
The Elta EL/L8260 attack helicopter self-defense system can include the EL/L-8231 small aircraft CW repeater jammer.
The Southwest China Research Institute of Electronic Equipment (based at Chengdu and Guanxian in Sichuan Province) offers the land-based I/J-band BM/DJG 8715 radar jammer (Chengdu facility); the E- through J-band BM/HZ 8610 surface-ship ESM (Chengdu); the E/F- and the I/J-band BM/KG 8601 airborne repeater jammer (Chengdu); the I/J-band BM/KG 8605 and I-band BM/KG 8606 airborne noise jammers (Chengdu); the C- through J-band BM/KJ 8602 RWR (Guanxian); and the D- through J-band BM/KZ 8608 airborne ELINT system (Chengdu).
exploitation of the minimum delay time through the repeater jammer
Figure 1(a) illustrates the spectrum produced by a repeater jammer that modulates the return with narrowband Doppler noise that masks the skin return.
4-GHz/2- to 18-GHz BM/KJ 8502 fixed-wing RWR, the BM/KG 8601 E/F- and I/J-band repeater jammer, the BM/KG 8606 I-band radar jammer, the BM/KG 8605 I/J-band noise jammer and the BM/KG 8605 I-band radar jammer.
Identified EW improvements carried out on Mirage III/50 aircraft include the introduction of Thomson-CSF's Sherloc RWR on Venezuelan Mirage 50EV aircraft; the installation of an RWR and what is described as "active and IR ECM" on 52 Swiss Mirage IIIS/RS/BS/DSs; the provision of Israeli-sourced EW gear in Argentine Mirage IIIE/CJ/Dagger/Mara aircraft; the introduction of the DTS EWPS-1000 suite on Chilean Mirage 50 Panteras and the use of Aviatronic's RWS-200 RWR and SPJ-200 repeater jammer on South Africa's reworked Mirage III, the Cheetah.
The four-year cycle of reinventing the repeater jammer concept, which extends back to 1944, will have finally been broken.
However, an active repeater jammer operating from a towed decoy can radiate at the radar frequency while replicating, precisely, the radar waveform.
Decoys carrying active repeaters can create the same effects in the radar as the repeater jammers discussed above.