Multichannel simultaneous DFS and AOA estimation of microwave signals based on photonic approach

Qingqing Meng; Shanghong Zhao; Guodong Wang; Congrui Gao; He Li; Zihang Zhu

doi:10.1117/12.3005321

21 December 2023 Multichannel simultaneous DFS and AOA estimation of microwave signals based on photonic approach

Qingqing Meng, Shanghong Zhao, Guodong Wang, Congrui Gao, He Li, Zihang Zhu

Proceedings Volume 12966, AOPC 2023: AI in Optics and Photonics ; 129660F (2023) https://doi.org/10.1117/12.3005321
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

A novel scheme with simultaneous measurement of Angle-of Arrival (AOA) and Doppler-frequency-shift (DFS) of microwave signal without direction ambiguity is proposed and demonstrated. At remote antenna unit (RAU), two received high-frequency microwave signals and a reference signal are modulated by a dual-polarization dual-drive Mach-Zehnder modulator (DPol-DDMZM). After transmission over a segment of fiber link, two signals in low-frequency bands are generated at central station (CS) through a frequency down-conversion. The DFS (including values and direction) and the non-ambiguous AOA in the range of 180° can be simultaneously calculated by monitoring the power and frequency of the two low-frequency electrical signals. The proposed structure not only improves the concealment and security of the CS but also can be extended to have multiple antenna elements in remote locations to realize multi-target detection.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qingqing Meng, Shanghong Zhao, Guodong Wang, Congrui Gao, He Li, and Zihang Zhu "Multichannel simultaneous DFS and AOA estimation of microwave signals based on photonic approach", Proc. SPIE 12966, AOPC 2023: AI in Optics and Photonics , 129660F (21 December 2023); https://doi.org/10.1117/12.3005321

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