摘要
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.同时分析了数字式快速自动增益控制的原理及不足,并给出一种可实现的数字式瞬时自动增益的设计方案.该方案基于FPGA技术,简单易行.
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. The principle and defect of rapid digital automatic gain control are given. A practical design plan of instantaneous digital automatic gain control based on the technique of FPGA is presented. This plan is simple and practical.
出处
《应用科技》
CAS
2005年第10期19-20,23,共3页
Applied Science and Technology
关键词
比幅
自动增益控制
数字瞬时自动增益控制
amplitude comparison
automatic gain control
instantaneous digital automatic gain control
