非衰落信道下基于DMF的伪码捕获性能分析  

Analysis on Acquisition Performance of PN Code Based on DMF over Non-fading Channels

作　　者：张爱民[1] 张德兴[1] 马志强[1] 

机构地区：[1]总参谋部通信训练基地,河北宣化075100

出　　处：《现代电子技术》2010年第23期27-29,共3页Modern Electronics Technique

摘　　要：基于数字匹配滤波器(DMF)的PN码捕获电路具有较快的捕获速度,因此在扩频系统中已得到广泛应用,为了在高斯白噪声环境的非衰落信道下改善DMF捕获性能,对影响捕获性能的虚警概率和检测概率进行了推导和分析,进而计算出了平均捕获时间,最后做出了仿真和分析。The PN code acquisition circuit based on DMF can accelerate the process of PN code acquisition, so it has more and more application in DSSS. In order to improve further acquisition performance over non-fading channels under Gauss White noise circumstance, the detection probability and false alarm probability which effect acquisition performance of PN code are derived and analyzed, and the mean acquisition time is computed, the results of simulation and analysis are given.

关 键 词：非衰落信道 数字匹配滤波 检测概率 虚警概率 平均捕获时间 

分 类 号：TN911-34[电子电信—通信与信息系统]