一种提高MLS角度精度的综合测量方法  

A Comprehensive Method for Improving Angle Measurement Accuracy of MLS

作　　者：田孝华 赵颖辉[2] 何晶[2] 邹鲲[2] TIAN Xiaohua;ZHAO Yinghui;HE Jing;ZOU Kun(School of Intelligence Science and Information Engineering,Xi'an Peihua University,Xi'an 710125,China;Information and Navigation College,Air Force Engineering University,Xi'an 710077,China)

机构地区：[1]西安培华学院智能科学与信息工程学院,西安710125 [2]空军工程大学信息与导航学院,西安710077

出　　处：《电光与控制》2020年第11期64-67,共4页Electronics Optics & Control

基　　金：国家自然科学基金(61571456);校科研项目(PHKT19001)。

摘　　要：研究了MLS的角度测量问题,提出了一种提高测角精度的综合测量方法。该方法利用往返扫描波束的对称性抑制多径干扰,利用提出的线交叉寻峰算法改善角度测量精度,利用数字滤波技术减小噪声的影响,并用以TMS320F2812 DSP为核心的数字信号处理系统对提出的方法进行了实验验证。测试结果表明:提出的方法具有测量精度高、对多径干扰具有鲁棒性以及便于工程实现的优点。The angle measurement of Microwave Landing System(MLS) is studied,and a comprehensive method for improving the accuracy of angle measurement is proposed.In this method,symmetry of the to-and-fro scanning beams is used to suppress multipath interference,the peak detection algorithm based on intersection of straight lines of position is presented to improve angle measurement accuracy,and digital filtering is used to mitigate the impact of noise.The proposed method has been verified by the digital signal processing system based on TMS320 F2812 DSP.The testing results show that the method has the advantages of high measurement accuracy,robustness to multipath interference and easy engineering implementation.

关 键 词：微波着陆系统 多径干扰 方位角 仰角 阵列天线 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计] TN961[电子电信—信号与信息处理]