微弱直流信号检测系统抗干扰方案的研究

The Research Report of an Anti jamming Scheme for Detecting Weak DC Signals

作者在本文中提出了提高调制型微弱直流信号检测系统的抗干扰能力的方案，采用了选频放大器和相敏检波器的设计方案。在文中还对各部分电路的传输函数、幅频特性、元件灵敏度以及元件参数的选择等都进行了分析讨论。

Aiming at enhancing the anti jamming ability of a modulated system for detecting weak DC signal, the author presents a design scheme in which the transfer function, the amplitude frequency characteristics, the elementis sensitivity and the parameter of the frequency selecting amplifier and the phase sensitive detector are analyzed,and also provides the experimental waves and data for readers.