Inter-satellite relative position measuring device and method based on laser beam tracking corner reflector

By applying a measurement device based on laser beam tracking angle reflectors in satellites, combined with high-precision stellar sensors and composite tracking platforms, the problem of insufficient relative position measurement accuracy between satellites is solved, and accuracy measurements at the millimeter level or even submillimeter level are achieved.

CN119716891AActive Publication Date: 2025-03-28SHANGHAI AEROSPACE CONTROL TECH INST
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Patent Information

Application Number
CN202411781438.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-03-28
Estimated Expiration
2044-12-05

AI Technical Summary

Technical Problem

The prior art is difficult to achieve millimeter-level or even submillimeter-level accuracy measurements in relative positions between satellites, due to the accuracy bottlenecks of microwave ranging and traditional mechanical bearings and photoelectric optical code disc technologies.

Method used

The inter-star relative position measurement device based on laser beam tracking angle reflector is adopted, and a high-precision stellar sensor and composite tracking platform are used, combined with a laser measuring instrument and a two-dimensional photoelectric position detector, to achieve high-precision tracking and ranging of the laser beam.

Benefits of technology

Through this device and method, relative position measurement accuracy of millimeter-level or even submillimeter-level can be achieved within the range of kilometers, significantly improving the accuracy of relative measurement between stars.

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Abstract

The invention discloses an inter-satellite relative position measuring device and method based on a laser beam tracking corner reflector, and belongs to the technical field of inter-satellite measurement. The measuring device comprises a measuring instrument host and a laser angle reflecting device which are respectively arranged on two satellites at relative positions to be measured, the characteristics of high-precision distance measurement of laser and high-precision angle measurement of a fixed star sensor are fully utilized, the laser and the fixed star sensor are combined, meanwhile, a measurement reference point is clear, and millimeter-level and submillimeter-level relative measurement precision is obtained. The method can be used for high-precision relative measurement between satellites, and is also suitable for various engineering technical scenes needing real-time or post high-precision relative measurement.
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