This paper analyzes a kind of chaotic modulated signals, the phase-modulated radar signals are generated by chaotic signals, at the same time the ambiguity function of the coded signals is given. Theory and simulation results show that the ambiguity function of chaotic modulated signals is approximately "thumbtack-shape" as the ideal results, thus the signal has high resolution both in time-delay domain and Doppler frequency domain. It implies the possibility and advantages for chaos to be used in radar signal processing.
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