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CHENG Ziyang, TAN Siyuan, RAN Changkun, et al. Over-the-air computation aided joint beamforming design for distributed radar[J]. Journal of Radars, in press. doi: 10.12000/JR26055
Citation: CHENG Ziyang, TAN Siyuan, RAN Changkun, et al. Over-the-air computation aided joint beamforming design for distributed radar[J]. Journal of Radars, in press. doi: 10.12000/JR26055

Over-the-air Computation Aided Joint Beamforming Design for Distributed Radar

DOI: 10.12000/JR26055 CSTR: 32380.14.JR26055
Funds:  The National Natural Science Foundation of China (62371096), Open Research Project of the State Key Laboratory of Industrial Control Technology, China (ICT2026B59)
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  • Corresponding author: CHENG Ziyang, zycheng@uestc.edu.cn
  • Received Date: 2026-03-09
  • Rev Recd Date: 2026-09-04
  • Available Online: 2026-09-08
  • Aiming at the problems of high data backhaul cost and low efficiency in the traditional Distributed Radar Network (DRN), this paper investigates a novel architecture of distributed radar networks assisted by Over-the-Air Computation (AirComp), so as to improve the performance of cooperative target detection and the efficiency of data fusion. Firstly, a cooperative detector applicable to distributed radar networks is derived at the sensing level, which reveals that its detection statistic inherently takes a summation form and is highly mathematically consistent with the linear superposition mechanism of AirComp. On the basis of this inherent correlation, a joint beamforming design method is proposed for AirComp-assisted distributed radar networks, which simultaneously optimizes the radar transmit beamforming matrix, the receive filter, and the Hybrid Beamforming (HBF) receiver at the Fusion Center (FC). Furthermore, an efficient solution algorithm based on alternating optimization is devised. Simulation results demonstrate that, under the same Signal to Interference-plus-Noise Ratio (SINR) and false alarm probability, the proposed AirComp-aided Distributed Radar Network (AirDRN) architecture achieves superior target detection performance compared with the conventional Time Division Duplex (TDD) mode. Specifically, when the SINR is 7 dB and 10 dB, respectively, the detection performance is improved by approximately 3.17 and 1.52 times.

     

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