Method and system for measuring the flight movement of a spacecraft in a target airspace

By using a ground-based antenna to track a reference point within the target airspace and performing open-loop velocity analysis, the distance and timeliness issues of spacecraft measurements in existing technologies have been resolved, enabling real-time assessment and high-precision measurement of the spacecraft's flight status.

CN120403668BActive Publication Date: 2025-11-18BEIJING AEROSPACE CONTROL CENT
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Patent Information

Application Number
CN202510537038.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-04-27
Publication Date
2025-11-18
Estimated Expiration
2045-04-27

AI Technical Summary

Technical Problem

Existing technologies for measuring the flight motion of spacecraft within the target airspace suffer from limitations such as limited distance, high cost, poor timeliness, and low measurement sensitivity. In particular, ground-based radar and ground-based/space-based optical measurements are greatly affected by weather, making it difficult to monitor the spacecraft's orbital maneuvers and attitude adjustments in real time.

Method used

A method and system for measuring the flight motion of a spacecraft within a target airspace are provided. The system tracks a reference point within a preset time period using a ground-based antenna on the target, performs open-loop radio measurements within the target airspace inside a three-dimensional cone, and processes the downlink signal using an open-loop velocity analysis method to generate the spacecraft's flight motion data.

Benefits of technology

It enables open-loop radio measurement of the flight motion of spacecraft within the target airspace, allowing for real-time assessment of the spacecraft's flight status and improving the timeliness and accuracy of the measurement. It is applicable to the measurement of orbit and attitude changes of distant spacecraft such as those on the moon.

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Abstract

The application discloses a kind of target airspace in the process of spacecraft flight movement measurement method and system, it is related to deep space measurement technical field, method includes: in the preset time period, real-time determination with target region as bottom surface and with target ground-based antenna as vertex solid cone in target airspace, obtain the target airspace of each preset time in the preset time period, in the preset time period, control target ground-based antenna to reference point is tracked;In the tracking process, at each preset time, the downlink signal of spacecraft in target airspace is tracked and measured by target ground-based antenna, and the downlink signal measured by tracking is processed, and the flight movement data of spacecraft is obtained.The application can complete the radio open-loop measurement of spacecraft flight movement process in target airspace, and the flight state of spacecraft can be further evaluated according to the obtained flight movement data.
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