摘要
针对传统系统存在捕获准确率低的问题,设计了船载监控网络GPS高频信号自动捕获系统。根据系统总体结构,控制系统参数,从优化射频电路和引入C/A码发生器2个角度设计硬件结构。采用锁相跟踪法分析窄带跟踪路线,并对信号进行扩频处理,待延时到1~3个半码片后直接对位置进行搜索,由此获取自动捕获模型,实现高频信号自动捕获系统研究。由实验分析结果可知,该系统最高捕获准确率为98%,为信号高效接收提供保障。
Aiming at the problem of low acquisition accuracy in traditional systems,an automatic acquisition system of GPS high frequency signals in ship-borne monitoring network is designed.According to the overall structure of the system and the parameters of the control system,the hardware structure is designed from the two angles of optimizing the RF circuit and introducing the C/A code generator.Narrow-band tracking route is analyzed by phase-locked tracking method,and the signal is spread-spectrum processed.The position is searched directly after 1-3 half-chips delay,thus the automatic acquisition model is obtained,and the high-frequency signal automatic acquisition system is realized.The experimental results show that the highest acquisition accuracy of the system is 98%,which provides guarantee for efficient signal reception.
作者
钟强
ZHONG Qiang(Department of Electronic information Engineering,Beihai Vocational College,Beihai 536000,China)
出处
《舰船科学技术》
北大核心
2019年第18期175-177,共3页
Ship Science and Technology
关键词
船载监控网络
GPS
高频信号
自动捕获
shipborne monitoring network
GPS
high frequency signal
automatic acquisition
