数字化码同步器 DBS530 性能分析

介绍美国洛克希德马丁（ＬＯＣＫＨＥＥＤＭＡＲＴＩＮ）公司生产的数字化码同步器ＤＢＳ５３０的工作原理及电路组成，对其输入自动增益控制、直流基线恢复、相位误差提取及码元判决、环路滤波、频率合成等电路进行了较为详尽的分析，最后给出样机的误码性能测试数据。结果表明，ＤＢＳ５３０的实现方法是值得借鉴的，它为国内高码率数字化码同步器的研制又提供了一条可供选择的新途径。

Performance Analysis of DBS530 Digital Bit Synchronizer

This article describes the operating principles and circuits composition of DBS530 Digital Bit Synchronizer produced by Lockheed Martin Corporation. Moreover,input automatic gain control,DC baseline restorer,phase error extraction,bit decision,loop filter,frequency synthesizer circuits are discussed in detail.Finally, bit error performance test data of the model machine are delivered.The results show the means adopted in DBS530 is worth learning.Another new optional way is provided for domestic developing high bit rate digital bit synchronizer