摘要
锁相检波技术采用模拟乘法器,对与本地载频信号频率一致的输入信号有强的检测能力。在分析典型的CW和FSK水声遥测信号特点的基础上,根据音频锁相检波器NE567的设计公式和应用要点,设计了锁相检波模块,用于多通道遥控测距装置,湖上和海上实验证明了应用的有效性。
Phase-locked detection technology using simulated on time-multiplier,has a strong ability of detecting input signal consistent with local software processing signal frequency.Based on the analysis of the typical CW and FSK signal characteristics,according to the design formula and application points of audio phase lock NE567 geophone,a phase-locked detection module is designed for multimodal remote distance device.Lake and sea experiments proved the validity of its application.
出处
《海洋技术》
北大核心
2011年第2期80-83,共4页
Ocean Technology
基金
水声对抗国防科技重点实验室科研基金(2010015)
关键词
锁相检波
CW信号
FSK
带宽
测距
phase-locked detection
CW signal
FSK
bandwidth
ranging
