线性调频脉冲发声系统的设计  

Design of Chirp Modulated Pulse Sound Producing System

作　　者：廉德钦[1,2] 何常德[1,2] 苗静[1] 杜春晖[2] 宛克敬[1] 薛晨阳[1,2] 

机构地区：[1]中北大学电子测试国家重点实验室,山西太原030051 [2]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《压电与声光》2013年第1期151-154,共4页Piezoelectrics & Acoustooptics

基　　金：国际科技合作基金资助项目(2010DFB10480)

摘　　要：介绍了线性调频脉冲压缩原理及一种基于脉冲压缩技术的线性调频信号发声系统,该系统包括电路系统,计算机控制程序和发射装置。电路系统使用信号发生器件、单片机及模拟开关来产生周期性线性调频信号。计算机控制程序采用微软基础类库(MFC)窗口程序,通过串口控制单片机。使用压电声音发射器发声,并做了线性调频声音发射、接收实验,对接收的信号进行了脉冲压缩。The chirp pulse compression technique and a new chirp pulse sound producing system based on pulse compression technique are introduced. This system includes circuit, controlling program of computer and sound pro duce device. In the circuit systems, signal generator, MCU and analog switch are used to produce periodic liner modulated signal. Computer controlling program is adapted in MFC window program. MCU is controlled through serial interface. Piezoelectric sound generator is used to produce sound. Experiments on liner modulate signal produ cing and receiving are carried out. At last, pulse compression technique is use to compress the receiving signal.

关 键 词：脉冲压缩 线性调频 信号发生器 模拟开关 微软基础类库(MFC) 

分 类 号：TN552[电子电信]