北京航空航天大学学报 ›› 2015, Vol. 41 ›› Issue (3): 418-423.doi: 10.13700/j.bh.1001-5965.2014.0181

• 论文 • 上一篇    下一篇

Tong检测算法性能分析及参数设置

朱云龙1, 丑武胜1, 杨东凯2   

  1. 1. 北京航空航天大学 机械工程及自动化学院, 北京 100191;
    2. 北京航空航天大学 电子信息工程学院, 北京 100191
  • 收稿日期:2014-04-03 出版日期:2015-03-20 发布日期:2015-04-02
  • 通讯作者: 杨东凯(1972—),男,山东莱芜人,教授,edkyang@buaa.edu.cn,主要研究方向为卫星导航. E-mail:edkyang@buaa.edu.cn
  • 作者简介:朱云龙(1978—),男,北京人,博士后,inca_zyl@126.com
  • 基金资助:
    国家863计划资助项目(2012AA12A206,2011AA120502)

Performance analysis and parameter setting for Tong detection algorithm

ZHU Yunlong1, CHOU Wusheng1, YANG Dongkai2   

  1. 1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
    2. School of Electronic and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2014-04-03 Online:2015-03-20 Published:2015-04-02

摘要: Tong检测算法是常用的信号检测算法,但在其统计性能以及算法参数设置等方面仍缺少全面的结论.针对这些问题,运用统计和递推分析方法对信号搜索单元滞留次数的均值及方差进行了较为详细的理论分析,给出了相应表达式,根据3西格玛原则,提出了一种最大滞留次数限定方法.分析了检测概率、噪声搜索单元和信号搜索单元平均滞留次数与算法中计数器初值和最大值以及预检测信噪比之间的关系.分析结果表明Tong检测算法参数的设置需依据信号强弱和搜索方式,并折衷考虑对检测概率与噪声搜索单元或信号搜索单元平均滞留次数的影响.

关键词: 卫星导航, 接收机, 捕获, 检测, Tong检测算法

Abstract: Tong detection algorithm is a common used signal detection algorithm. But the overall conclusions about statistical performance and parameter setting of Tong detection algorithm are absent. Aiming at these problems, statistical and recursive analysis methods were used to carry on theoretical analysis about mean value and variance of dwell times in signal search unit in detail, the corresponding expressions were given, a maximum dwell times constraint method was offered according to the 3Sigma principle. The relationships between detection probability, average dwell times of noise search unit and signal search unit, initial value and maximum value of algorithm counter, pre-detection signal to noise ratio were analyzed. Analysis results indicate that the parameters of Tong detection algorithm should be set according to signal strength and search modes, and the influence of parameter setting on detection probability and average dwell times of noise search unit or signal search unit should be balanced.

Key words: satellite navigation, receiver, acquisition, detection, Tong detection algorithm

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