基于DSP的数字检波设计及实现

Design and Implementation of Digital Detection Based on DSP

该文介绍了一种在实时频谱分析仪环境中，基于DSP的数字检波设计方案，给出了如何利用DSP实现多种视频检波等关键技术的实现原理与方法。传统方案通常选择利用FPGA的童配置来实现检波与其它功能模式的切换，而重配置较为复杂，导致模式切换速度慢，不稳定因素增加。该设计明显减少了测试模式切换所带来的重配置操作，从而降低了系统的复杂度，提升了整体稳定性与运行速度，特别适合于频繁转换测试模式的工作环境。

A DSP based design scheme for digital detection in RSA （Real-time Spectrum Analyzer） environment is introduced in the article, and the implementing principle and the methods of the key technologies of how to realize the various video detections, etc are given. In the traditional scheme, the switchovers between the detection mode and other functional modes normally by means of the reconfiguration of FPGA, but since the reconfiguration is of more complex, that may lead to slow down the mode switching speed and increase the destabilizing factors. This design obviously reduces the reconfigurations that caused by the test mode switching, thus simplifies the complexity of the system and promotes the entirety stability and operating speed. The analyzer especially is suited to the working conditions of needing to switch the test modes frequently.