Dual-frequency multi-component joint tracking method, device and medium for navigation satellite signals

By employing the dual-frequency multi-component joint tracking method (DM-JAT), the upper and lower sideband carriers of the dual-frequency navigation satellite signal are used for tracking, which solves the problem of not being able to fully utilize the dual-frequency broadband signal components in the existing technology and achieves higher tracking and ranging accuracy.

CN115774275BActive Publication Date: 2026-07-21TSINGHUA UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIVERSITY
Filing Date
2022-12-23
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing dual-frequency broadband signal tracking technology fails to fully utilize all components in the dual-frequency broadband signal for joint tracking, resulting in insufficient tracking accuracy of the carrier, subcarrier, and code.

Method used

The dual-frequency multi-component joint tracking method (DM-JAT) is adopted. By tracking the local carriers of the upper and lower sidebands of the dual-frequency navigation satellite signal separately, the correlation value is jointly calculated, and the carrier phase and subcarrier phase are merged to achieve multi-component joint tracking of the dual-frequency broadband signal.

Benefits of technology

It improves the tracking accuracy of carrier, subcarrier and code, and makes full use of the high-precision subcarrier information contained in the dual-frequency broadband signal, thus achieving higher tracking and ranging accuracy.

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Abstract

The application discloses a kind of dual-frequency multi-component joint tracking method, equipment and medium of navigation satellite signal.The method comprises: according to the upper sideband carrier and the lower sideband carrier in dual-frequency navigation satellite signal as local carrier, tracking dual-frequency navigation satellite signal is respectively carried out, and the upper sideband and the lower sideband multi-component correlation value are obtained respectively, the carrier phase error, code phase error, subcarrier phase error of the upper sideband carrier and the lower sideband carrier obtained by jointing the upper sideband and the lower sideband multi-component correlation value obtained respectively are obtained, and the carrier phase, code phase, subcarrier phase of dual-frequency navigation satellite signal are obtained.The technical scheme of the embodiment of the application can improve the tracking precision of navigation satellite signal.
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