【摘要】 介绍了数字匹配滤波器解扩电路的结构和特点 ,研究了高斯白噪声信道下基于数字匹配滤波器的PN码捕获方式 ,并根据匹配滤波器相关处理时间的不同 (部分周期和全周期 )推导了PN码同步检测和虚警概率 ,最后对数字匹配滤波器的相关输出进行了仿真 ,给出了检测、虚警概率数值分析结果 ,从而为进一步研究数字匹配滤波器解扩性能提供了理论依据更多还原

【Abstract】 The archtecture and characteristic of digital matched filter circuit used for PN code synchronization are introduced and the method of PN code serial search acquition based on DMF has been researched in AWGN channel.Furthermore the detection probability and false alarm probability are derived for different correlation time(partitive period or whole period).Finally,the results of calculation and emulation are given in order to be employed as useful theoretical bases for reserching the acquisition performance of digital matched filter.更多还原