26 April 2010 Complex, aperiodic random signal modulation on pulse-LFM chirp radar waveform
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In an effort to enhance the security of radar, the plausibility of using a complex, aperiodic random signal to modulate a pulse linear frequency modulation (LFM) or "chirp" radar waveform across both its fast-time and slow-time samples is investigated. A non-conventional threat is considered when illustrating the effectiveness of the proposed waveform as an electronic counter-countermeasure (ECCM). Results are derived using stretch processing and are assessed using the receiver cross-correlation function with a consideration for the unmodulated case as a basis for comparison. A tailored radar ambiguity function is also included in the analysis, and is used to demonstrate how the proposed waveform possesses an ideal characteristic suitable for combating today's electronic warfare (EW) threats while preserving its inherent functionality to detect targets.
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Mark A. Govoni, Mark A. Govoni, Hongbin Li, Hongbin Li, "Complex, aperiodic random signal modulation on pulse-LFM chirp radar waveform", Proc. SPIE 7669, Radar Sensor Technology XIV, 76690S (26 April 2010); doi: 10.1117/12.849136; https://doi.org/10.1117/12.849136

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