ArticleSensors (Basel, Switzerland)2021
Two-Stage Fast DOA Estimation Based on Directional Antennas in Conformal Uniform Circular Array.
Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- A 33 GHz Conformal Phased-Array Radar with Linearly Constrained Minimum Variance Digital Beamforming, Circular- Polarization Filtering, and Neural-Network Micro-Doppler Classification for Counter-UAS Applications.Sensors (Basel, Switzerland) · 2026Article
- Direction-of-Arrival Estimation Method Based on Neural Network with Temporal Structure for Underwater Acoustic Vector Sensor Array.Sensors (Basel, Switzerland) · 2023Article
- Two-Stage Nested Array Direction of Arrival Estimation for Mixed Signals.Sensors (Basel, Switzerland) · 2022Article
- Classification Method of Uniform Circular Array Radar Ground Clutter Data Based on Chaotic Genetic Algorithm.Sensors (Basel, Switzerland) · 2021Article
- Bluetooth 5.1: An Analysis of Direction Finding Capability for High-Precision Location Services.Sensors (Basel, Switzerland) · 2021Review
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
In conformal array radar, due to the directivity of antennas, the responses of the echo signals between different antennas are distinct, and some antennas cannot even receive the target echo signal. These phenomena significantly affect the accuracy of direction-of-arrival (DOA) estimation. To implement accurate DOA estimation in a conformal uniform circular array (UCA) composed of directional antennas, the two-stage fast DOA estimation algorithm is proposed. In the pre-processing stage, multi-target decoupling and target detection are mainly used to obtain the targets' range bin indexes set; in the rough-precise DOA estimation stage, the amplitude and phase information of each antenna are used for rough DOA estimation and precise DOA estimation, respectively. Based on simulation and actual anechoic chamber radar experiments, and through quantitative analyses of the accuracy, validity and elapsed time of the two-stage fast DOA estimation algorithm compared with the directional antenna MUSIC (DA-MUSIC), sub-array MUSIC (S-MUSIC) and Capon-like algorithms, results indicate that the two-stage fast DOA estimation algorithm can rapidly and accurately estimate DOAs in a multi-target scenario without the range-angle pair-matching procedure. Lower computational complexity and superior estimation accuracy provide the two-stage fast DOA estimation algorithm a broader application prospect in the practical engineering field.
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