GNSS接收机信号捕获门限动态设置研究  

Research on Dynamic Setting Acquisition Threshold for GNSS Receivers

作　　者：韩晓虎[1] 李建海[1] 刘保华[1] 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《电视技术》2013年第9期157-159,共3页Video Engineering

基　　金：航空科学基金资助项目(20095596014);陕西省自然科学基础研究资助项目(2009JM8001-4)

摘　　要：在捕获的非相干积分环节后合理选取捕获门限的大小,是GNSS接收机信号捕获取得良好接收性能的关键,门限过小容易造成虚警,而过大的门限又容易造成漏警。首先介绍了信号捕获原理,然后通过分析待检测值的概率分布,结合信号的信噪比研究,得出了动态设置捕获门限的方法。After non-coherent integration of acquisition, reasonable selects the size of acquisition threshold is the key of good receiving performance of GNSS receivers. Low threshold easily causes false alarm, while high threshold easily causes miss detection. The signal acquisition principle is introduced in this psper. By analyzing the probability distribution of detected value, combined with research on signal to noise ratio, the method of dynamically setting threshold is achieved.

关 键 词：GNSS接收机 捕获门限 动态设置 

分 类 号：TP914.42[自动化与计算机技术]