针对水下环境的特殊性和水声定位系统的要求,为降低检测水声定位信号的复杂度和硬件资源消耗,能够准确检测定位基站发射的水声定位信号,为目标基站的定位提供实时、快速的时延信息,根据水声定位信号的特点,采用码元匹配检波和编码定位信号相关的方法,确定水声定位信号的到达时间,并以FPGA为平台利用VHDL语言对水声定位信号的检测设计.实验表明:该检测方法具有快速、准确、实时性好的特点,满足水下定位系统的应用要求.%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.
展开▼
