基于DBF的机载交通防撞系统测角算法  

Angle measurement algorithm for airborne TCAS based on DBF

作　　者：葛广泽 郎思呈 GE Guangze;LANG Sicheng(Shanghai Civil Aviation Electronics Systems Co.,Ltd.,Shanghai 200241)

机构地区：[1]上海民用航空电子系统有限公司,上海200241

出　　处：《雷达与对抗》2024年第4期19-25,共7页Radar & ECM

摘　　要：针对机载交通防撞系统的水平方位角测量问题,提出一种基于数字波束形成的测角算法。基于机载交通防撞系统使用的交通天线阵列布局,归纳接收通道相位差的数学表达式;基于数字波束形成说明一种水平方位角的测角算法流程,同时给出简化算法,以进一步减少运算量,便于工程实现;对算法进行仿真验证,仿真结果表明该算法可以在多目标情形下获得相较常规比相计算法更优的测角性能。This paper proposes an angle measurement algorithm based on the digital beamforming(DBF)for the horizontal azimuth measurement of the airborne traffic collision avoidance system(TCAS).Based on the traffic antenna array layout used for the airborne TCAS,the mathematical expression of the phase difference in the receiving channel is summarized;based on the DBF,a hori zontal azimuth measurement algorithm process is explained,and a simplified algorithm is given to further reduce the amount of calculation and facilitate engineering implementation;the algorithm is simulated and verified,and the simulation results show that the algorithm can achieve better angle measurement performance than conventional phase comparison algorithms in multi-target situations.

关 键 词：交通防撞系统 比相测角 DBF 

分 类 号：TN953[电子电信—信号与信息处理]