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Signal Parameter Estimation from Intercepted and Recorded Radar Signal Data
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Electronic Intelligence (ELINT) provides not only direction of arrival of intercepted signals but also provides immediate warning of threat radars, including surveillance, fire control, targeting and missile guidance systems. Radar signals from across the borders are intercepted by an ELINT receiver, recorded on a magnetic tape and are analyzed by an associated signal processing system to give a wide range of parameters, including direction, type of radar, frequency, frequency agility, Pulse Repetition Frequency (PRF), and PRF type, Scan type, Scan time and Intra pulse modulation details. These parameters are sufficient to characterize the type of emitter, and complete identification is then carried out by comparing the analyzed signal with parameters of hostile and friendly emitter characteristics stored in a library within the computer memory. Analysis of the signals and warning of a threat is virtually instantaneous and enables countermeasures of jamming and/or decoys to be initiated.
Keywords
Electronic Support Measures, ECM, Radar Signal Parameter Estimation.
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