摘要
传统侦察系统由于硬件滤波器的器件特性在高频段的增益会出现下降,微弱信号常常淹没在噪声之下,理论上10dB信噪比可检测的信号,在固定门限检测下都变得十分困难。这样的结果导致系统高频段灵敏度相比低频段要低。为解决这个问题侦察系统设计师一直孜孜不倦在寻找各种办法。该文提出一种利用底噪增益校正的方法来解决这个问题。
The gain of the traditional reconnaissance system in high frequency band will decrease due to the device characteristics of the hardware filter.Weak signal often become difficult to detect under noise.In this paper,a method of noise correction is proposed to solve this problem.
作者
陈竹
田艺枫
Chen Zhu;Tian Yi-feng(Southwest China Research Institute of Electronic Equipment,Sichuan Chengdu 610036)
出处
《电子质量》
2020年第6期115-117,共3页
Electronics Quality
关键词
侦察系统
背景噪声
增益校正
灵敏度
reconnaissance system
Weak signal
correction
sensitivity
