Beacon-based approach guidance system

The beacon signal is received through the receiver's antenna array, and the vehicle's heading and elevation angle are calculated using pseudo-random code modulation and demodulation technology, which solves the problem of precise positioning of vertical take-off and landing aircraft and realizes efficient and portable vehicle guidance.

CN120779324APending Publication Date: 2025-10-14THE BOEING CO
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Patent Information

Application Number
CN202510288264.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-04-02
Filing Date
2025-03-12
Publication Date
2025-10-14

AI Technical Summary

Technical Problem

Vertical take-off and landing aircraft require passenger-carrying autonomous commercial guidance systems with precise positioning and attitude determination, and existing technology may require redundant and/or auxiliary guidance systems.

Method used

The beacon signal is received through the receiver's antenna array, and the carrier signal is restored using pseudo-random code modulation and demodulation technology. The arrival direction is calculated based on the phase characteristics, and combined with the heading and elevation angle in the vehicle reference system to achieve vehicle approach and landing guidance.

Benefits of technology

It reduces the complexity and cost of ground-based infrastructure, improves the portability and reliability of the system, reduces dependence on complex software, and achieves efficient vehicle guidance.

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Abstract

A beacon-based approach guidance system is disclosed. The disclosed method includes digitizing at least one signal received at an antenna array of a receiver of a vehicle into a digitized data stream of I and Q samples, the at least one signal received from a beacon, the at least one signal modulated at the beacon with a pseudo-random code, the I and Q samples are associated with a locally generated pseudo-random code of the receiver to recover the carrier signal, and a direction of arrival of the at least one signal from the beacon in the vehicle reference frame is calculated based on a relative phase characteristic of the recovered carrier signal.
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