Miniaturized dual-antenna navigation signal processing board

By designing a dual-antenna navigation signal processing board, two radio frequency signals are processed independently, and the stronger signal is selected autonomously. This solves the signal interruption problem caused by single-antenna obstruction, improves the reliability and flexibility of navigation signals, and is suitable for multi-frequency navigation signal processing of micro and small satellites.

WO2026118019A1PCT designated stage Publication Date: 2026-06-11BEIJING RES INST OF TELEMETRY
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
BEIJING RES INST OF TELEMETRY
Filing Date
2024-12-05
Publication Date
2026-06-11

AI Technical Summary

⚠Technical Problem

Traditional miniaturized navigation receiver boards use a single antenna, which is easily blocked or interfered with by changes in attitude, resulting in weak or interrupted navigation signals. In addition, space is limited on micro-satellites, making it difficult to meet the requirements for reliability and stability.

⚗Method used

A miniaturized dual-antenna navigation signal processing board was designed, which includes first and second radio frequency signal processing modules, a four-channel navigation module and a clock module. It independently processes two radio frequency input signals and autonomously selects the one with higher signal strength. It supports frequency point processing of multiple navigation systems and is arranged in analog and digital areas. A shielding cover is added to improve anti-interference capability.

🎯Benefits of technology

It enables independent processing of two radio frequency signals, improving the reliability and flexibility of navigation signals. It can efficiently process navigation signals at multiple frequencies on micro and small satellites, reducing costs and size. It also supports on-orbit upgrades and multiple communication methods, making it suitable for navigation scenarios of micro and small satellites.

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Abstract

Provided in the present invention is a miniaturized dual-antenna navigation signal processing board, comprising a first radio-frequency signal processing module, a second radio-frequency signal processing module, a first four-channel navigation module, a first navigation signal processing module, a second four-channel navigation module, a second navigation signal processing module, an external communication interface, a first clock module, a second clock module, a first power supply module and a second power supply module. The present invention enables independent processing of two radio-frequency input signals and autonomous selection of the one with the higher strength, such that the weakening or interruption of navigation signals caused by the blockage of a certain antenna is effectively coped with, thereby improving the reliability of the navigation signals; the present invention also enables the processing of navigation signals at a plurality of frequency points such as 1.2 GHz and 1.5 GHz under navigation systems including BeiDou, GPS, GLONASS and GALILEO, and by means of selecting the models of a first surface acoustic wave filter, a second surface acoustic wave filter and a third surface acoustic wave filter in a radio-frequency signal processing module, the present design is also applicable to receiving navigation signals at a plurality of frequency points such as 1.6 GHz.
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