多普勒声学全向信标信号源设计

摘要

针对多普勒声学全向信标信号产生的需求，设计了一个多通道的非线性调频信号源，产生多路同步非线性调频。阐述了多普勒声学全向信标的原理，并以此提出信号源设计的需求。采用AD9954特有的RAM 模式，产生了多路同步正弦调频信号发生器，给出了部分硬件和软件设计说明。经过湖上试验证明，所设计的信号源达到了系统要求，性能良好。%With the requirement of doppler acoustic omni‐directional beacon(DAOB) ,a multi‐path non‐linear frequency modulation (FM ) signal generation system is designed to generate several synchronous FM signals .The principle of DAOB and the requirement of signal generation are presented .Using the RAM mode of AD9954 ,several synchronous sine signals are generated .The part of hardware and software of the circuit is presented .The performance of the designed generation system is verified by the lake trial .