摘要
提出了一种基于多相滤波器的高速匹配滤波器方法,这种方法在滤波器多相分解和整数倍抽取的基础上进行数学推导,不对输入信号做任何处理,仅将多相滤波器组的系数和前后顺序略做调整,即可实现滤波后波形中任意采样点的抽取。不仅具有多相滤波降低运算速率的优点,而且在匹配滤波后不减少采样点的个数,提高后续处理的同步精度。该方法误差小,实现简单,在宽带通信系统中具有良好的应用前景。
This paper presents a high-speed matched-filter method based polyphase filter.This method performs the mathematical derivation on the basis of polyphase decomposition of filter and integer multiple extraction,does not do anything with the input signal,only performs slight adjustment to coefficients and order of the polyphase filter group,then the extraction of any sampling point of the waveform after filtering can be achieveded.The method has the advantage of reducing the operation rate of polyphase filter,and does not reduce the number of sampling points after matched filter can improve the synchronous accuracy of subsequent capture.The method has small error and can be easily realized,has a good application prospect in broadband communication system.
出处
《舰船电子对抗》
2016年第2期49-52,共4页
Shipboard Electronic Countermeasure
关键词
多相滤波器
整数倍抽取
同步精度
polyphase filter
integer multiple extraction
synchronous accuracy
