慢变量信号检测中的V/F变换技术与强噪声中弱信号的提取方法  

V/F Transform Techniques in Detection of Slow Changing Signals and Extracting Method of Weak Signals in Strong Noise Background

作　　者：熊小芸[1] 赵松年[1] 于允贤 

机构地区：[1]中国科学院大气物理研究所 [2]国家地震局地球物理研究所

出　　处：《仪器仪表学报》1994年第2期174-180,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金

摘　　要：电压(V)—频率(F)—二进制编码(BCD)—变换电路是本文提出的一种电参量线性变换电路,与域变换中的滤波、相关和卷积运算相结合,成为实现等效窄带滤波器、频率预置调制跟踪锁相环路、多普勒频偏信号的检测以及从强噪声中提取慢变量弱信号的有效方法。 本文给出了电路与系统设计中V—F—BCD变换方法的若干实例。Voltage-Frequency-Binary Code transform Circuits proposed by authors in this paper are an electric parameter linear transform circuit, combining with integral transform, such as filtering, correlation and convolution,it is capable of making up equivalent narrow-band filter and modulation tracking phase locked loop with preset frequency circuit and accomplishing detection of Doppler frequency shift signal. Moreover, it obviously is efficient detection method of weak slow changing signals from strong noise background. Some examples of V-F-BCD transform method in the design of circuits and systems are given in this paper.

关 键 词：信号检测 V-F变换 变换电路 噪声 

分 类 号：TN911.23[电子电信—通信与信息系统]