基于DSP的数字信号源软件设计

Software Design of Digital Singnal Source Based on DSP

介绍使用ADSP21160高速数字信号处理(DSP)芯片,实现数字信号源的程序设计;分析使用DSP实现数字信号源的可行性,介绍仪器设备中常用的部分信号形式,列出CW,LFM信号的数学公式,给出工程文件的建立和程序设计流程图,以及在实际应用中注意事项,利用ADSP21160的Simulator仿真软件的plot画图功能,画出程序运行产生的部分波形,说明使用DSP设计数字信号源是完全可行的,比模拟信号源有明显的优越性,修改方便、使用灵活,根据不同的算法就可以产生不同的信号。该文应用ADSP21160数字信号处理器软件实现了CW,LFM信号在不同包络中形成的复杂窄脉冲和多脉冲数字信号源。

This paper introduces a digital signal source software design, based on ADSP21160 high - speed Digital Signal Processing （DSP）. Analysis of the feasibility of using DSP to design digital signal source, the often used signals form CW, LFM mathematical models are proposed. The paper gives the software flow chart, the important points in practical application, and plot wave form figures of simulator software using ADSP21160. Using DSP to design digital signal source is totally feasi- ble than the analog signal source, has advantages of using different algorithm to generate different signals, complex narrow pulse and multi - pulse signal source is generated in diflerent envelope of CW, LFM signal is realized by applying ADSP21160.