基于外测观测的再入飞行转弯方向辨识方法

淡鹏; 王丹; 李恒年

引用本文:	淡鹏，王丹, 李恒年. 基于外测观测的再入飞行转弯方向辨识方法[J]. 雷达科学与技术, 2022, 20(6): 658-662.[点击复制]
	DAN Peng， WANG Dan, LI Hengnian. Turning Direction Recognition Method Based on Exterior Measured Data for Spacecraft Reentry[J]. Radar Science and Technology, 2022, 20(6): 658-662.[点击复制]

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基于外测观测的再入飞行转弯方向辨识方法
淡鹏，王丹, 李恒年
1. 宇航动力学国家重点实验室，陕西西安 710043;2. 西安卫星测控中心，陕西西安 710043

摘要:

针对航天器再入返回过程中无遥测数据、仅外测观测下的飞行转弯方向实时辨识问题，分析了航天器再入飞行时的主要受力情况，给出了一种采用非动力学建模及UKF滤波框架的航天器再入飞行速度估计算法。在此基础上提出了一种使用前后时刻速度或速度增量在轨道面的法线分量判断单点转弯方向的方法，并通过多点滑窗统计方法实时给出了转弯方向的辨识结果，减少了误判的几率。实验结果表明此转弯方向辨识算法是可行的，研究结果对再入飞行弹道计算及转弯方向估计有一定的参考意义。

关键词: 再入飞行；转弯方向；实时；外测 UKF

DOI：DOI:10.3969/j.issn.1672-2337.2022.06.009

分类号:V557+.1;TN957

基金项目:国家自然科学基金（No.11772356）

Turning Direction Recognition Method Based on Exterior Measured Data for Spacecraft Reentry

DAN Peng， WANG Dan, LI Hengnian

1. State Key Laboratory of Astronautic Dynamics, Xi’an 710043, China;2. Xi’an Satellite Control Center, Xi’an 710043, China

Abstract:

Sometimes, only exterior measured data, not the telemetry, can be gotten during the spacecrafts reentry flight, which will lead to many difficulties for the real-time turning recognition. So that, the main forces in the flying are analyzed, and an estimating method with no dynamic modelling and using the unscented Kalman filter (UKF) is given. Then a turning recognition method using a single point is proposed, which uses the orbit normal direction weight of the fore-and-aft velocity or velocity increment. After that, a scrolling statistical calculation method with multiple points is used to reduce the error probabilities. The research results indicate that the method is feasible, which has some certain reference significance for the reentry trajectory calculation and the turning direction recognition.

Key words: reentry flying turning direction real time exterior measured data unscented Kalman filter