Space-borne GNSS receiver based on reconfigurable modularization

Abstract

A satellite-borne GNSS receiver based on reconfigurable modularization adopts modular design and comprises a radio frequency module, a navigation module, a control module and a bottom plate. Wherein the radio frequency module, the navigation module and the control module adopt standardized structural design, the modules can be reconfigured and combined, multi-antenna input and multi-machine redundant backup can be supported, and the system is suitable for satellite-borne scenes. The radio frequency module receives multipath antenna GNSS radio frequency signal input and completes amplification, combination and power division processing. The navigation module captures, tracks and positions GNSS signals based on an integrated navigation chip; the control module completes communication with the on-satellite subsystem, control instruction receiving and execution and the like based on the main control CPU; and the bottom plate is used for providing interconnection among modules, external interfaces and basic power supply. The method is suitable for complex satellite-borne scenes, has the reconfigurable characteristic, and has flexibility, universality and reliability, the design cost can be greatly reduced, and batch production capacity is achieved.

Description

technical field [0001] The invention relates to a space-borne GNSS receiver based on reconfigurable modularization, which belongs to the field of satellite navigation. Background technique [0002] With the rapid development of commercial aerospace, micro-satellites have developed rapidly in the fields of broadband communication, electronic investigation, remote sensing observation and other fields by virtue of their small size, strong mobility, fast construction speed, and low-orbit operation, and have shown a trend of large-scale networking , The construction demand is large. As one of the core components, the satellite-borne GNSS receiver provides high-precision position, velocity and time information for the satellite. Different from the ground scene, the space-borne scene is complex, the satellite moves fast and has different attitude adjustments, the signal Doppler frequency shift is large, and the visible star switching speed is fast, etc., all of which put forward e...

AI Technical Summary

Problems solved by technology

In recent years, some domestic satellites have begun to use ordinary ground commercial small GNSS receivers as on-board orbit determination equipment, but the space adaptability and reliability cannot meet the long-term on-orbit work requirements

In addition, because satellite models and constellations often have different functions and structural definitions, they cannot be universalized. Most of the existing spaceborne GNSS receivers are realized by customized solutions. The design, production costs and cycle are difficult to compress, and cannot be mass-produced. production capacity

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