摘要
对GPS时频同步捕获算法进行了研究,分析了一维和二维捕获算法的特点,在已有算法基础上,提出了一种改进的一维时频同步捕获算法,与修改前的捕获算法相比,算法捕获门限的设定简单,且提高了捕获概率;与二维捕获算法相比,显著提高了信号捕获的速度。
This paper analyzes the characters of 1-D and 2-D acquisition algorithm, A modified acquisition algorithm based on time--frequency synchronization on GPS is proposed. Compared with original algorithm, it can not only decrease the complexity of threshold setting, but also increase the acquisition rate. Compared with 2-D algorithm, it obviously increases the speed of acquisition.
出处
《全球定位系统》
2009年第6期43-47,共5页
Gnss World of China
关键词
时频同步
伪码捕获
捕获算法
Time-frequency synchronization
PRN code acquisition
acquisition algorithm
