飞机姿态对干涉仪测向的影响分析及校准方法  

Analysis and Compensation Method of Airborne Interferometer Direction-Finding under Attitude Conditions

作　　者：郑天涯 吴煜 熊怡因 兰安友 ZHENG Tianya;WU Yu;XIONG Yiyin;LAN Anyou(Southwest Electronic Equipment Research Institute,Chengdu 610036,China)

机构地区：[1]西南电子设备研究所,四川成都610036

出　　处：《电声技术》2023年第10期103-107,共5页Audio Engineering

摘　　要：传统的机载干涉仪测向算法通常根据单方位或俯仰维度进行建模,来计算电磁波与干涉仪天线阵法向的夹角,从而得到基于机体坐标系的来波方向。由于飞机在飞行过程中不可避免存在偏航、俯仰和横滚等姿态,干涉仪天线阵元间基线的法向与机体坐标系中基线的法向不同,从而导致根据实际基线测量出来的方向与实际来波方向存在误差。为了提高机载干涉仪的测向精度,需对飞机姿态引入的测向误差进行校准。对此,提出两种基于态势数据的误差校准方法。仿真结果表明,所提的方法可有效提升干涉仪测向精度。Traditional direction-finding algorithm of airborne interferometer calculates the intersection angle between electromagnetic wave and normal direction of interferometer antenna array according to latitude of azimuth or pitch.Due to the yaw,pitch and roll of the aircraft,the baseline of the interferometer antenna array is different from that of the airframe coordinate system,resulting in the difference between the measured azimuth and the actual electromagnetic wave direction.In order to improve the direction-finding accuracy of airborne interferometer,it is necessary to compensate the direction-finding error introduced by aircraft attitude.This paper proposes two error compensation methods based on posture data,and simulation results show that the interferometer direction finding accuracy can be effectively improved.

关 键 词：干涉仪 测向精度 测向误差及校准 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]