Integrated radar and communications based on chirped spread-spectrum techniques

Linear Frequency Modulated (LFM) signals and the associated pulse compression techniques are attractive in applications where highly secure and robust communication is needed. This paper investigates the novel integration of radar and communications utilizing LFM waveforms. The simulations suggest that the performance of the communications-receiver deviates at most 2 dB from the theoretical probability of bit error for pi/4-differential phase shift keying. The simulated radar receiver-operating characteristics for false-alarm probabilities between 10(-2) and 10(-4) also compares very well with the theoretical limits for a coherent system.