A fixed unmanned aerial vehicle out-of-band dual-tone monitoring suppression transmission system

By using an out-of-band dual-tone monitoring and suppression transmission system, the problems of large spectrum occupation and difficulty in controlling the impact of legitimate services in UAV wireless link monitoring and transmission are solved. The system enables parallel operation of monitoring and transmission and real-time frequency optimization, meeting compliance audit requirements.

CN122073494BActive Publication Date: 2026-06-26FUJIAN LINGXIN INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUJIAN LINGXIN INFORMATION TECH CO LTD
Filing Date
2026-04-22
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies for monitoring and transmitting wireless links in drones suffer from problems such as large spectrum consumption by in-band direct transmission, difficulty in controlling the impact on legitimate services, difficulty in parallel monitoring and transmission, and lack of real-time frequency optimization and compliance auditing methods.

Method used

An out-of-band dual-tone monitoring and suppression transmission system is adopted. Through the integration of a broadband spectrum monitoring and receiving link, an out-of-band dual-tone suppression transmission link, a self-interference isolation and leakage monitoring module, a closed-loop adaptive optimization control module, and a security reporting link, spectrum occupancy is reduced, monitoring and transmission are carried out in parallel, real-time optimization is achieved, and compliance auditing is enabled.

Benefits of technology

It achieves reduced spectrum usage, parallel operation of monitoring and transmission, ensures control over the impact of legitimate services, has real-time frequency optimization capabilities and compliance audit functions, and reduces the complexity of engineering deployment.

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Abstract

The application relates to a fixed unmanned aerial vehicle out-of-band dual-tone monitoring and suppression transmission system, which comprises a wideband spectrum monitoring receiving link, an out-of-band dual-tone transmission link, a transceiving self-interference isolation and leakage monitoring module, a closed-loop adaptive optimization control module, a monitoring result and suppression effect evaluation packaging module and a safety reporting link. The system determines a target link working frequency band according to a target link working center frequency and an occupied bandwidth obtained through monitoring, transmits two paths of narrowband continuous wave signals with independently adjustable frequency and power outside the frequency band, realizes monitoring, constraint and evaluation of the target link suppression process by combining digital pre-distortion, online calibration and leakage measurement, and packages and reports spectrum parameters, intermodulation products, signal quality changes and station states, and is suitable for unmanned aerial vehicle transmission monitoring, testing and controlled suppression scenes under legal permission or controlled conditions.
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