MIMU辅助无人机相关干涉仪测向方法研究  

Research on Direction Finding Method of MIMU Auxiliary UAV Related Interferometer

作　　者：王秋滢[1] 匡春旭 钟万青 WANG qiu-ying;KUANG chun-xu;ZHONG wan-qing(College of Information and Communication Engineering,Harbin Engineering University,Harbin Heilongjiang 150000,China)

机构地区：[1]哈尔滨工程大学信通学院,黑龙江哈尔滨150000

出　　处：《计算机仿真》2021年第2期52-57,共6页Computer Simulation

基　　金：国家自然科学基金(51879046)。

摘　　要：机载相关干涉测向技术近年来发展迅速,其中微型旋翼无人机凭借悬停飞行能力,为测向系统提供了良好的工作环境,被广泛应用于侦察、救援和救灾等诸多领域。干涉仪测向体制的原理是通过测量位于不同电波波前的天线间相位差来确定来波方位,从其原理可知,载体平台基准误差是测向的主要误差源之一,在以微型旋翼无人机为载体时,误差对测向系统的影响更为突出。针对上述问题,分析了振动对微型旋翼无人机干涉测向算法性能的影响,并提出了一种微型惯性测量单元(Miniature Inertial Measurement Unit,MIMU)辅助状态下的微型旋翼无人机强鲁棒性相关干涉仪测向方法。方法利用MIMU检测无人机振动所产生的角度干扰,根据得出的信息和改进后的干涉测向算法来校正测向结果。仿真结果表明,基于MIMU的微型旋翼无人机测向方法在振动影响下仍具有较高的测向精度,验证了该方法的有效性。Airborne related interferometric direction finding technology has developed rapidly in recent years.The microrotor drone has provided a good working environment for the direction finding system by airborne hovering ability,and is widely used in many fields such as reconnaissance,rescue and disaster relief.The principle of the interferometer direction finding system is to identify the direction of the incoming wave by measuring the phase difference of antennas that located in front of different wavefronts.According to the principle,the carrier platform reference error is one of the main error sources in the direction finding.When the rotorcraft is a carrier,the influence of the error on the direction finding system is more prominent.Aiming at this problem,this paper analyzed the influence of vibration on the performance of the micro-rotor UAV interferometric direction finding algorithm,and proposed a method of the micro-rotor UAV strong robustness correlation interferometer direction finding in the auxiliary state of Miniature Inertial Measurement Unit(MIMU).We used the MIMU to detect the angular interference generated by the vibration of the drone,and corrected the direction finding result according to the obtained information and the improved interferometric direction finding algorithm.The simulation results show that the MIMU-based micro-rotor UAV direction finding method still has high direction finding accuracy under the influence of vibration,and the effectiveness of the method is verified.

关 键 词：微型旋翼无人机 相关干涉仪 无人机振动 微型惯性测量单元 

分 类 号：TJ01[兵器科学与技术—兵器发射理论与技术]