Design of detection of nodes location signal of underwater sensor networks

Aiming at the particularity of the underwater environment and acoustic positioning system requirements,to reduce the complexity of the underwater acoustic positioning signal detection and hardware resource consumption,to accurately detect positioning signal,to provide real-time,rapid time delay information,for the goal base station,according to the character of acoustic positioning signal,using code element matching demodulation and coded signal correlate method of location signal to ensure arrival time.And by using VHDL language design acoustic positioning signal detection circuit on FPGA platform.The experimental result indicates that the examination method has characteristics of rapid,accurate,good real-time,it can meet the application requirements of underwater positioning system.