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光电稳瞄系统前向运动及地理扫描
引用本文:任元斌,王惠林,谢娜,刘栋,韩瑞. 光电稳瞄系统前向运动及地理扫描[J]. 兵工学报, 2020, 41(8): 1519-1528. DOI: 10.3969/j.issn.1000-1093.2020.08.006
作者姓名:任元斌  王惠林  谢娜  刘栋  韩瑞
作者单位:(西安应用光学研究所, 陕西 西安 710065)
摘    要:为分析飞机前向运动对光电稳瞄系统扫描策略的影响,介绍与稳瞄系统相关的地心地固坐标系、导航坐标系、机体坐标系、瞄准线坐标系等4种常用坐标系,归纳了常用坐标系之间的齐次变换关系。从微分运动的角度,用运动学表达式论述了载机前向运动对两轴四框架稳瞄系统所产生的成像机理。搭建从稳瞄系统内部控制元件一直到系统外部地理指向的全链路仿真模型,并根据运动学关系在模型中施加相应的控制作用,以消减飞机前向运动对稳瞄系统所带来的成像影响。给全链路仿真模型赋予和物理实际相符的电学和运动学参数,模拟了稳瞄系统在空中对地定位和扫描的过程。结果显示,该前向运动理论分析正确且有效,所搭建的全链路模型可用。

关 键 词:光电稳瞄系统  瞄准线  地理扫描  前向运动分析
收稿时间:2019-09-26

Forward Motion and Terrain Scanning of Electro-optical Stabilized Sighting System
REN Yuanbin,WANG Huilin,XIE Na,LIU Dong,HAN Rui. Forward Motion and Terrain Scanning of Electro-optical Stabilized Sighting System[J]. Acta Armamentarii, 2020, 41(8): 1519-1528. DOI: 10.3969/j.issn.1000-1093.2020.08.006
Authors:REN Yuanbin  WANG Huilin  XIE Na  LIU Dong  HAN Rui
Affiliation:(Xi'an Institute of Applied Optics, Xi'an 710065, Shaanxi, China)
Abstract:The common coordinate systems, such as earth-centered earth-fixed, navigation, airframe and line of sight coordinate systems, are introduced, and the homogeneous transformation between them is summarized to analyze the influence of forward motion on the scanning strtegies of electro-optical stabilized sighting system. The imaging mechanism of two-axis 4-framework stablized sighting system during the forward motion of aerial carrier is discussed using kinematic expression from the perspective of differntial kinematics. A full-link simulation model is proposed for the internal control components in the sighting system and the geographical orientation. A control action is applied to eliminate the influence of forward motion on the sighting system in the proposed model. The positioning and scanning processes of the sighting sysytem in the air were simulated by introducing the electronic and kinematic parameters in the proposed model. Simulated results show that the theorectical analysis of forward motion is correct and effective, the full-link simulation model is available.
Keywords:electro-opticalstabilizedsightingsystem  lineofsight  geographicalscanning  forwardmotionanalysis  
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