Integrated Waveform Design Scheme Based on Underwater Detection and Communication

This paper presents a new integrated waveform design scheme for underwater detection and communication. The scheme ensures that the waveform has both communication and detection performance by modulating the communication base-band signal into the form of a detection signal. The generalized sinusoidal frequency modulation (GSFM) signal, which is suitable for underwater continuous active sonar detection, is selected as the detection signal carrier. The detection performance and target estimation performance were analyzed by comparing the ambiguity function, azimuth estimation and detection probability with the associated peak-to-average ratio as the test statistic for linear frequency modulation (LFM), GSFM and the designed waveform. By adjusting the GSFM parameters, a range of parameter values for the detection waveform carrier in the integrated waveform is obtained. The simulation results show the effectiveness of the proposed waveform design method.