摘要
为了实现高动态条件下对导航信号的快速捕获,以分段相关与FFT相结合的快速捕获方法为基础,研究了一种改型匹配滤波器的实现结构,对该结构进行了Matlab仿真,在仿真的基础上实现了FPGA设计。仿真和综合结果表明,采用改型匹配滤波器、分段相关、FFT相结合的快捕结构,显著提高了捕获速度、减少了捕获时间,同时节约了硬件逻辑资源。试验结果表明,该方法是一种有效的快捕方法。
In order to capture the navigation signals rapidly in high-dynamic enviroment, the method of improved matched filter is studied based on segment correlation and FFT. The structure of improved matched filter is simulated by Matlab, and then implemented on FPGA. The simulation result and synthe- sis result show that the improved matched filter is a valid method for fast acquisition,which improves the speed of acqusition and reduces the time, also saves the resource of hardware.
出处
《战术导弹技术》
2014年第2期108-113,共6页
Tactical Missile Technology
