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Transmitting Waveforms Ambiguity Function based Complementary Coding in Broadband Acoustic Doppler Current Profiler

Acoustic Doppler Current Profilers (ADCP) is a sonar instrument for measuring water velocity by Doppler frequency shift of the echo reflected by the scatterer in ocean. It is very important to reduce the aliasing effect and improve the measuring range. In this paper, we propose a new waveform design method based on pseudo-random sequence and complementary coding principle. Besides, we apply radar ambiguity function to broadband ADCP waveform analysis. Simulation results show the encoding method can obtain higher measurement accuracy and effectively reduce the aliasing effect.