This paper describes the defect of amplitude-comparison discriminator in direction-finding system in PRS, then put forward a compensating method of digital automatic gain control.
分析了比幅鉴别器在导引头测向系统中的缺点，提出了用数字式自动增益补偿的方法来加以改善。
2
To free-axis RLC measuring lower precision caused by adopting analog phase discriminator, a measuring method based on digital phase discriminator is adopted.
针对自由轴法RLC测量中因使用模拟鉴相器导致测量精度低的问题，提出采用一种基于数字鉴相的测量方法。
3
This paper describes the input circuit and anti-interference measures of A-D-A type digital frequency discriminator used in the speed governing system of hydraulic turbines.