本论文首先根据ETC技术应用背景引入测向算法的相关原理的讨论,并针对时差测向模糊问题,进行推导,并引入余数定理解模糊方法以克服测向模糊。然后,针对前述测向算法的原理,结合实验室设计的ETC系统的工作细节,利用MATLAB数值仿真功能对信号处理过程与解模糊算法进行仿真,测试算法在噪声与多径干扰信号条件下的性能。之后本文对FPGA设计的原理经行简单探究,并对系统结构做简单介绍。最后本文针对现行硬件调试所出现的问题,提出基于MATLAB串口的硬件调试模型,并最终利用MATLAB的GUI界面实现了上位机对A\D采样系统的通道选择和数据传输与分析。关键词 时差测向 余数定理解模糊 ETC 自动调试系统9378
Title Research in Phase-interferometer Direction Finding Algorithm and its FPGA realization
Abstract
Based on ETC system application, direction finding algorithm(DFA) was introduced, together with the discursion on its related theory.To minish the ambiguity in the direction finding algorithm, double baseline DFA was introduced. Next part is the MATLAB based computational simulation for this algorithm .This paper mentioned only a little part of the FPGA building for the DFA. At the last part, a serial port based hardware debug software was with MATLAB on Windows platform so that data and command can be exchanged between Master and Slave.This software prove to be useful in improving working efficiency
during hardware debugging.
Keywords TDOA Remainder of understanding fuzzy set ETC Hardware auto-debugging system