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Interactive Least-Squares Costas Waveforms

Interactive Least-Squares Costas Waveforms

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This chapter addresses the use of radar waveform optimization in radio frequency interference (RFI) scenarios that include either partial band interference or terrain-scattered interference (hot clutter). Terrain-scattered interference can induce significant coverage losses. Without waveform optimization, the only solution may be to “burn through which will impact the radar time line. Waveform optimization can potentially provide an alternative to this by matching to the target and anti-matching to the interference. Previous noise mitigation techniques result in waveforms with high signal-to-interference-plus-noise ratios (SINRs), but relatively poor waveform properties (specifically, low compressed pulse resolution and non-constant amplitude modulus). This chapter concentrates on the problem of improving these waveform properties while simultaneously maintaining favorable SINRs.

Inspec keywords: least squares approximations; radar clutter; optimisation; radiofrequency interference

Other keywords: RFI; interactive least-squares costas waveforms; compressed pulse resolution; nonconstant amplitude modulus; radar time line; SINR; hot clutter; noise mitigation techniques; partial band interference; radio frequency interference; radar waveform optimization; signal-to-interference-plus-noise ratios; terrain-scattered interference

Subjects: Radar theory; Optimisation techniques; Electromagnetic compatibility and interference; Interpolation and function approximation (numerical analysis)

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