相关积累法信号预处理技术的原理与应用
Principle and Application of Signal Preprocessing Technique Based on Correlated Accumulation
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摘要: 本文介绍北京遥测研究所与浙江省计算所共同研究的以相关积累法为基础的信号预处理技术的原理及应用．通过预处理可改善信号噪声比值20分贝以上，且把具有周期性变化规律的信号载频频率变“慢”800～1200倍，从而有利于较高频率的微弱被测信号的传输、显示和作数据处理．Abstract: A new technique of signal preprocessing based on correlated accumulation and its application has been described in this paper.With this technique,improvement of more than 20 db in signal-to-noise ratio may be obtained and carrier frequency of a periodic signal "retarded" from 800—1200 times.All of these fascilitate tran-smiting,displaying and processing weak and small signals of relatively high frequencies.
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