Design of an ultra-wideband array direction finding system

Bai Yuesheng; Liu Jun; Wang Yuankai

doi:10.11884/HPLPB202537.250145

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Bai Yuesheng, Liu Jun, Wang Yuankai. Design of an ultra-wideband array direction finding system[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250145

Citation:

Bai Yuesheng, Liu Jun, Wang Yuankai. Design of an ultra-wideband array direction finding system[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250145

Bai Yuesheng, Liu Jun, Wang Yuankai. Design of an ultra-wideband array direction finding system[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250145

Citation:

Bai Yuesheng, Liu Jun, Wang Yuankai. Design of an ultra-wideband array direction finding system[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202537.250145

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Design of an ultra-wideband array direction finding system

doi: 10.11884/HPLPB202537.250145

The 41st Research Institute of China Electronic Technology Group Corporation, Qingdao 266555, China

Received Date: 2025-05-21
Accepted Date: 2025-08-26
Rev Recd Date: 2025-08-27

Available Online: 2025-09-08

Abstract

Abstract

Background
With the advancement of electronic reconnaissance, communication, and radar technologies, direction-finding systems are facing increasingly higher demands for high precision, wide frequency coverage, large dynamic range, and real-time performance.
Purpose
To address these developmental needs of direction-finding systems, this paper aims to design an ultra-wideband array direction-finding system. The objectives include achieving key specifications such as a frequency range of 20 MHz to 40 GHz, a maximum instantaneous bandwidth of 1 GHz, and a direction-finding accuracy better than 5 degrees across the entire frequency band, adapting to wide-range usage scenarios in communication, radar, and other fields.
Methods
The ultra-wideband array direction-finding system employs a spatial spectrum direction-finding mechanism. This is realized through the detailed design and implementation of hardware components, including a multi-channel direction-finding receiver and a multi-layer antenna array, along with software implementation based on spatial spectrum direction-finding algorithms.
Results
The designed ultra-wideband array direction-finding system achieves an ultra-wide frequency range of 20 MHz to 40 GHz, supports direction-finding tasks with a maximum instantaneous bandwidth of 1 GHz, delivers a direction-finding accuracy better than 3 degrees across the entire band, and possesses the capability to handle three or more same-frequency signals simultaneously.
Conclusions
The ultra-wideband array direction-finding system significantly enhances core performance parameters such as frequency range, instantaneous bandwidth, and direction-finding accuracy. Systems with similar architectures have been successfully deployed in multiple large-scale projects, demonstrating their feasibility and scalability through practical applications.
- multi-channel array,
- direction-finding system,
- ultra-wide frequency range,
- spatial spectrum

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References(15)

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