Orbital-angular-momentum-based object detection using uniform circular-frequency diverse array

Zhengkuan Tan; Kang Liu; Hongyan Liu; Yunhui Zhang

doi:10.1117/12.3036591

4 December 2024 Orbital-angular-momentum-based object detection using uniform circular-frequency diverse array

Zhengkuan Tan, Kang Liu, Hongyan Liu, Yunhui Zhang

Author Affiliations +

Proceedings Volume 13283, Conference on Spectral Technology and Applications (CSTA 2024); 1328321 (2024) https://doi.org/10.1117/12.3036591
Event: Conference on Spectral Technology and Applications (CSTA 2024), 2024, Dalian, China

Abstract

Beams carrying Orbital Angular Momentum (OAM) have garnered significant attention in the fields of radar and communications. However, traditional methods of generating OAM beams, such as the spiral phase plate and phased arrays, are limited to the sequential generation of corresponding modal OAM beams. This paper proposes a novel, highly efficient method for generating intra-pulse time-varying OAM beams leveraging the Uniform Circular-Frequency Diverse Array (UC-FDA). Furthermore, the paper introduces an object detection method utilizing a single OAM pulse, based on linear frequency modulation signals. Range measurements are achieved through the use of multiple matched filtering techniques for pulse compression. Subsequently, the Fast Fourier Transform (FFT) is applied to extract azimuthal information of targets. The performance of the proposed method for range and azimuth angle measurements are analyzed, with simulations demonstrating the validity.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhengkuan Tan, Kang Liu, Hongyan Liu, and Yunhui Zhang "Orbital-angular-momentum-based object detection using uniform circular-frequency diverse array", Proc. SPIE 13283, Conference on Spectral Technology and Applications (CSTA 2024), 1328321 (4 December 2024); https://doi.org/10.1117/12.3036591

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KEYWORDS

Object detection

Signal processing

Error analysis

Pulse signals

Modulation

Phase distribution

Tunable filters

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