Electronic warfare support measures
In military
Electronic support measures can provide (1) initial detection or knowledge of foreign systems, (2) a library of technical and operational data on foreign systems, and (3) tactical combat information utilizing that library.[1] ESM collection platforms can remain electronically silent and detect and analyze RADAR transmissions beyond the RADAR detection range because of the greater power of the transmitted electromagnetic pulse with respect to a reflected echo of that pulse.[1] United States airborne ESM receivers are designated in the AN/ALR series.[1]
Desirable characteristics for electromagnetic surveillance and collection equipment include (1) wide-spectrum or bandwidth capability because foreign frequencies are initially unknown, (2) wide dynamic range because the signal strength is initially unknown, (3) narrow bandpass to discriminate the signal of interest from other electromagnetic radiation on nearby frequencies, and (4) good angle-of arrival measurement for bearings to locate the transmitter.[1] The frequency spectrum of interest ranges from 30 MHz to 50 GHz.[1] Multiple receivers are typically required for surveillance of the entire spectrum,[1] but tactical receivers may be functional within a specific signal strength threshold of a smaller frequency range.
See also
- AWACS
- Boeing E-3 Sentry
- Boeing E-4
- Electronic warfare
- Lockheed Orion
- Low-probability-of-intercept radar
- MGARJS
References
- ^ a b c d e f g Polmar, Norman "The U. S. Navy Electronic Warfare (Part 1)" United States Naval Institute Proceedings October 1979 p.137
- ^
This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 2022-01-22.
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