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Nonlinear Complementary Waveform Sets for Clutter Suppression

Nonlinear Complementary Waveform Sets for Clutter Suppression

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In this chapter we show how waveforms can be constructed which have true complementary behavior when non-linear singnal processing is used at the receiver. We call such waveforms square-complementary, since they have the property that the sum of the squares of their autocorrelations are zero at non-zero lags. In addition, by moving from square-complemtary pairs to square-complemtary quads the complementary behavior can be can be made Doppler tolerant over the range of Doppler shifts normally encountered in radar systems. The remainder of this chapter introduces complementary, square-complementary and mutually orthogonal code sets. Waveform construction via pulse code modulation is discussed, and multiplexing in time and frequency is examined. Applications of complementary coded signals to communications and radar are considered.

Inspec keywords: multiplexing; radar clutter; pulse code modulation; radar signal processing

Other keywords: square-complemtary pairs; mutually orthogonal code sets; waveforms square-complementary; pulse code modulation; square-complementary code sets; Doppler shifts; radar systems; clutter suppression; complementary behavior; Waveform construction; complementary coded signals; Doppler tolerant; multiplexing; autocorrelations; nonlinear signal processing; nonlinear complementary waveform sets

Subjects: Communication switching; Signal processing and detection; Modulation and coding methods

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