Distributed radar transceiver system

By employing a reference signal generation unit and a signal synchronization unit in the distributed radar, each transceiver chip can autonomously generate a synchronized local oscillator signal, thus solving the problems of high loss and error in the prior art and achieving efficient radar signal processing and analysis.

WO2025255842A1 Publication Date: 2025-12-18TSINGHUA UNIVERSITY
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Patent Information

Application Number
PCT/CN2024/099409
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-06-14
Publication Date
2025-12-18

AI Technical Summary

Technical Problem

In distributed MIMO radar, existing technologies require the local oscillator signals of each transceiver to be distributed uniformly through a central station, resulting in high losses and high hardware costs. At the same time, there are system errors that affect the radar imaging quality.

Method used

Multiple identical reference signals are generated by a reference signal generation unit. Each transceiver chip autonomously generates its own local oscillator signal based on the corresponding reference signal and maintains synchronization through a signal synchronization unit to eliminate time, frequency and slope errors. The signal is processed using a phase-locked loop, frequency multiplier and power amplifier.

Benefits of technology

This enables the localized generation of the local oscillator signal, avoiding losses and errors during transmission, ensuring the correct acquisition and interpretation of radar signals, and improving radar imaging quality.

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Abstract

A distributed radar transceiver system, relating to the technical field of radars. The distributed radar transceiver system comprises: a reference signal generation unit, configured to generate a plurality of identical reference signals; and a plurality of transceiver chips, wherein the plurality of transceiver chips are in one-to-one correspondence to the plurality of reference signals, each transceiver chip among the plurality of transceiver chips is configured to generate a local oscillator signal on the basis of the corresponding reference signal, and the local oscillator signals generated by the transceiver chips are the same. The local oscillator signals are generated by the transceiver chips, eliminating reliance on centralized distribution from a central station and thereby avoiding losses and errors of the local oscillator signals generated during transmission. In addition, because reference signals received by the transceiver chips are identical, the local oscillator signals generated by the transceiver chips are identical, so that the transceiver chips can locally process echoes of radar signals sent by the transceiver chips.
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