FS水声遥控系统

FS underwater acoustic remote control system

本文介绍一种可实用的FS（Freyuency－Snift）式编码的水声遥控系统，该系统采用9个频率点进行移频编码，可有效抗多途对译码的影响，编码设计能使遥控指令的码间距做得较大，通过自适应滤波器有效译码，可将误码率控制在希望值以下．理论分析和试验结果均表明，本系统误码率接近0，解码率1500m以内大于0．9，近距离大于0．96本系统已应用于水下物理场测量系统中．

In this paper, a FS(Frequency-Shift)underwater acoustic remote control sys tem is presented. Methods of FS coding and decoding are discussed. The FS code consists of multifrequency cw pulses in order to reject acoustic signal reflection, and is decoded by a new form of adaptive filter- Theoretical analysis and experiments show that the FS re mote control system has high rate of decoding and very low error-rate even under poor un derwater acoustic circumstances.