摘要
基于MATLAB环境对GPS的C/A码的捕获算法进行了研究。传统的滑动相关算法的主要缺点是需要做大量的滑动相关运算,导致搜索时间过长;为克服这一缺点,提出了一种新的改进算法,对采样数据先进行累加积分,然后做相关运算,可以有效地降低相关次数,使得捕获速度得到明显提高。这种研究方法也适用于其他系统的伪随机码的捕获研究。
A new acquisition algorithm of GPS signal based on MATLAB is presented. Because traditional algorithms have to do much glide correlation, they spend too much time. To overcome the shortage of traditional algorithms, the objective of the study is to shorten the processing time. The new algorithm can accelerate the speed of acquisition processing. This new acquisition algorithm of the GPS pseudo-random code is also suitable for other systems.
出处
《无线电工程》
2006年第6期43-44,50,共3页
Radio Engineering
关键词
粗码
滑动相关
扩频
捕获
pseudo-random code
glide correlation
spread spectrum
acquisition
