中国空间科学技术

中国空间科学技术

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伪随机码测距系统的双环路相关装置与浮动门限判决法

唐盛元   

  1. 西安无线电技术研究所
  • 发布日期:1988-08-25

CORRELATOR WITH TWO PHASE LOCK LOOPS AND DETECTION METHOD FOR SETTING FLOAT THRESHOLD

Tang Sheng yuan (Xian INST.of Radio Engineering)   

  • Online:1988-08-25

摘要： 本相关装置和浮动门限判决法是在“阿波罗”系统的基础上改制而成的。比较适用于音—码混合测距系统。与“阿波罗”系统比,相关损耗降低6dB。浮动门限判决法与“阿波罗”系统的最大似然法比较,结构极其简单,使用效果很好。

关键词: 伪随机码, 测距, 相关技术, 阈值条件, 计算

Abstract: A correlator and a detection method are presented. The detection method is modified from "Appollo" ranging system and suitable specifically for tone-code mixed ranging system. In the "Appollo" system the maximum likelihood detection was used, while in the present detection method setting of detection threshold is float.In comparison with"Appollo"system it has obvio us advantages: cor-relation loss decreases by 6dB and configuration is very simple. These feat-ures have been proved in use.

Key words: Pseudo-random code, Range finding, Correlation technique, Threshold condition, Computation.