摘要
平台运动将导致着陆引导信息出现偏差,为准确分析和计算动态平台条件下进近着陆系统着陆引导误差变化,提出了一种基于动态坐标转换对引导误差进行计算与补偿的方法。该方法依据GPS测姿中动态坐标转换原理,将平台运动分解为偏航、横滚、俯仰和升降4种姿态,建立了动态平台上进近着陆系统引导误差的数学模型,利用该模型对平台各摇摆处于简谐运动条件引导误差进行了仿真分析,依此设计了引导误差补偿的方案框图。该方法可以实现平台运动条件下对引导误差的仿真计算,能够对引导误差进行实时补偿。
The movement of platform may cause error in landing guidance information.In order to correctly analyze and calculate the guidance error of the approach and landing system under dynamic condition,a new method is presented based on dynamic coordinate conversion.According to the principle of the dynamic coordinate conversion from the attitude measurement of the GPS theory,a mathematic model of the guidance error of the approach and landing system onboard the platform was built up,where the dynamic status of the platform was decomposed into four statuses： yaw,roll,pitch and elevation.Then the model was used in simulation and calculation of the guidance error when the platform was in simple harmonic motion,based on which a scheme for compensation of the guidance error was proposed.Simulation results indicated that the coordinate conversion can be used for simulation of the guidance parameter error in the dynamic condition,and also for compensating the error in real time.
出处
《电光与控制》
北大核心
2010年第5期74-77,共4页
Electronics Optics & Control
基金
陕西省自然科学基金资助(SJ08F06)
关键词
进近着陆系统
动态条件
平台
坐标变换
引导误差
approach and landing system
dynamic condition
platform
coordinate conversion
guidance error
