基于电容近感原理的无源探测信号分析

Detection Signal Analysis for Passive Proximity Detection System Based on Theory of Capacitance

无源近感探测系统信号处理模块中的振荡网络设计是产生探测信号的关键所在,系统通过产生准静电场敏感近距目标的存在与否。鉴于此,讨论了一种基于电容原理的无源近感探测系统的探测信号。通过对三导体进行电磁分析,描述了探测信号产生的机理。仿真实验指出了相关部件设计的关键点所在,并描述了不同弹目交会条件下,鉴频信号变化的特点。

Since it is crucial to design the oscillator in the signal processing modules for generating the robust detection signal for the passive proximity detection system and the system detects targets through generating quasi-electrostatic field, this paper analyzes the detection signal of a passive proximity detection system based on capacitance theory is analyzed. Further, the generation mechanism of detection signal is described by the analysis of electromagnetic feature for three conductors. The simulation experiments indicate the core of related module, and describe the characteristic of the output of frequency discriminator under different intersection angles.