高速高阶可编程数字滤波技术与实现

High Speed and High Order Programmable Digital Filter and its implementation

本文讨论了频率范围宽,连续可调的高速高阶数字滤波技术及其工程实现。运用IMSA100级联信号处理技术和8097BH单片机可编程控制技术,实现了数字滤波中心频率在50～500000Hz,数字滤波归一化带宽在7‰～5%范围内连续可变的功能。应用该技术所研制的数字滤波设备在卫星测控遥测系统中获得了良好的效果。

This paper discusses the wide frequency and continuous adjustable highspeed and high order digital filter, as well as its implementation. Making use of IM-SA 100 Cascade signal processing technique and 8097BH monolithic computer pro-grammable control technique, We can implement continuous Changing functionwhile digital filtering central frequency is between 50Hz and 500000Hz, or digitalfiltering normalized band-width is between 7‰ and 5‰. The digital filtering equip-ments which are designed by this technique are useful in satellite telemetry system.