高弹道测量数据电波折射误差快速修正算法

飞行器制导精度评估、特别是航天器的姿态与定点控制、落点预报等，都离不开高精度的外弹道测量数据。在影响测量数据精度因素中，折射误差是主要误差源之一。目前折射误差修正方法中，一类精度很高，但计算速度太慢，无法应用于实时计算；一类速度很快，但因为使用的是简化模型，因而精度较差，难以满足未来高精度测控的需要。如何在确保实时计算速度基础上，又能提高其处理精度，正是文章构造出的快速折射修正二步方法所解决的课题。经仿真计算证明，该方法的结果完全满足实际工程对精度和速度的要求。

A Fast Two Steps Method for Radio Wave Refraction Correction of Range High Trajectory Measurement

Assessing the accuracy of guidance system,especially controlling of missile's attitude and station keeping maneuver and landing point forecasting all rely on the reliable trajectory measurement.The refraction error is main error source among the factors effecting measure data accuracy.Among those different refraction error correction approaches applied currently,one is accurate,but its calculation in real-time is very slow.The other is quicker,but its accuracy is unsatisfied because the simplified model of high precision trajectory is used.The fast two-step method of radio wave refraction correction is proposed in this paper.The simulation demonstrates the method meets the requirement of accuracy and speed in project entirely.