航天器中继天线跟踪角度实时预算方法

doi:10.16180/j.cnki.issn1007-7820.2021.07.001

摘要/Abstract

摘要：

针对传统中继天线跟踪角度STK仿真算法无法与航天器AIT实时测试过程相结合的问题,文中提出了一种中继天线跟踪角度实时预算方法并进行了软件实现。利用航天器轨道、天线波束及坐标系关系建立了中继天线指向角度等效模型,并结合航天器飞行姿态和实时遥测,实现了中继天线的跟踪角度预算、实时验证和闭环控制。实验结果表明,该方法实现了航天器AIT测试过程天线角度跟踪结果实时比对,以及航天器在轨各种姿态下测控覆盖区实时预测,单个测控弧段最大可增加13.3%覆盖率。文中所述方法已在某型号航天器分系统测试和在轨飞行任务中得到应用。

关键词: 航天器, 中继天线, 跟踪算法, 实时, AIT, 测试软件, STK, TTC

Abstract:

In view of at the problem that the traditional STK simulation algorithm for tracking angle of relay antenna cannot be used in real-time testing processing for spacecraft AIT, a real-time tracking algorithm for relay antenna is proposed and implemented in software. In this method, the orbit of spacecraft, antenna beam and coordinate system are applied to establish the equivalent model of the direction angle for relay antenna. Combining the spacecraft flight attitude and real-time telemetry, the tracking angle algorithm, real-time test result verification and closed-loop control strategy for relay antenna are realized. The experimental results show that the proposed method not only achieve real-time comparison of relay antenna angle tracking during the AIT test process, but also achieves the real-time prediction of TTC coverage under various flight attitude on orbit.The maximum TTC coverage of a single arc is increased by 13.3%. The method described in the study has been already applied to a certain type of spacecraft sub-system test and in orbit flight missions.

Key words: spacecraft, relay antenna, tracking algorithm, real-time, AIT, testing software, STK, TTC

中图分类号:

TN925+.1

黄克武,朱珂,张伟,齐鑫. 航天器中继天线跟踪角度实时预算方法[J]. 电子科技, 2021, 34(7): 1-6.

HUANG Kewu,ZHU Ke,ZHANG Wei,QI Xin. Real-Time Tracking Algorithm for Relay Antenna of Spacecraft[J]. Electronic Science and Technology, 2021, 34(7): 1-6.

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比对项目	时效性	误差修正方式	验证方式
传统方法	事后抽样	开环	手工判读
本文方法	实时比对	闭环	自动、可视化

航天器姿态	正飞	倒飞	连续偏航	组合体遮挡
单颗中继卫星覆盖率提升/%	2.1	2.1	3.3	6.7
单个测控弧段覆盖率提升/%	4.1	4.1	6.6	13.3