摘要
相关干涉仪测向算法的应用广泛,使用FPGA能够解决其应用DSP很难实现宽带信号的实时测向问题。介绍一种适于FPGA实现的相关干涉仪测向算法——最小间距法。与使用相位差值进行相关处理的传统相关干涉仪不同,最小间距法不需要求解来向信号的相位差,并且该算法摒弃了传统算法中求解相关系数的设计思路,引入求取空间点最小距离的方法来获取信号来向,降低了算法复杂度,减少了FPGA内部逻辑资源的使用。
Correlation interferometer algorithm is widely used in direction finding field,but there is a problem that it is difficult to achieve real-time measurements of broadband signals with DSP,and using FPGA can solve this problem.Therefore,a new algorithm called minimum distance method,which is very suitable for FPGA implementation,is introduced.Minimum distance is different from conventional interferometer,this method should not solve for the signal phase.And this algorithm,which brings getting the minimum distance of two spatial point to obtain the signal direction,abandons the traditional ideas of correlation-coefficient algorithm for solving the design.This method reduces the complexity of the algorithm,and cuts down the internal logic of FPGA resource utilization.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第20期4365-4367,4429,共4页
Computer Engineering and Design
关键词
相关干涉仪
测向
现场可编程门阵列
相关系数
最小间距
correlation interferometer direction finding FPGA correlation-coefficient minimum distance
