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利用初段获取的遥外测数据准确实现对各项初始误差的分离是动基座发射飞行器精度分析的重要环节。着重初始误差影响机理分析,推导遥外测视速度差的计算公式,详细分析平台惯性坐标系和发射坐标系的关系,建立视位置域下的初始误差分离线性模型。利用弹道仿真平台生成遥外测数据进行初始误差分离的仿真分析,验证模型和估计方法的正确性和可行性。
Using the remote sensing data acquired in the early stage to accurately separate the initial errors is an important step in the accuracy analysis of the launch vehicle. Focusing on the mechanism analysis of the initial error, the formula for calculating the speed difference of telemetering is deduced. The relationship between the inertial coordinate system and the launch coordinate system is analyzed in detail, and the initial linear model of error separation is established. The trajectory simulation platform is used to generate the telemetry data to simulate the initial error separation and verify the correctness and feasibility of the model and the estimation method.