Meng, Q.Q.; Zhu, Z.H.; Wang, G.D.; Li, H.; Xie, L.R.; Zhao, S.H. Photonics-based Simultaneous DFS and AOA Measurement system Without Direction Ambiguity. Preprints2022, 2022120484. https://doi.org/10.20944/preprints202212.0484.v1
APA Style
Meng, Q.Q., Zhu, Z.H., Wang, G.D., Li, H., Xie, L.R., & Zhao, S.H. (2022). Photonics-based Simultaneous DFS and AOA Measurement system Without Direction Ambiguity. Preprints. https://doi.org/10.20944/preprints202212.0484.v1
Chicago/Turabian Style
Meng, Q.Q., Ling rui Xie and Shang hong Zhao. 2022 "Photonics-based Simultaneous DFS and AOA Measurement system Without Direction Ambiguity" Preprints. https://doi.org/10.20944/preprints202212.0484.v1
Abstract
A novel scheme that can simultaneously measure the Doppler frequency shift (DFS) and angle of arrival (AOA) of microwave signals is proposed. At the signal receiving unit (SRU), two echo signals and the reference signal are modulated by a Sagnac loop structure and sent to the central station (CS) for processing. At the CS, two low-frequency electrical signals are generated after polarization control and photoelectric conversion. The DFS without direction ambiguity and wide AOA measurement can be real-time acquired by monitoring the frequency and power of the two low-frequency electrical signals. In the simulation, an unambiguous DFS measurement with errors of ±3×10-3 Hz and a -90° to 90° AOA measurement range with errors of less than ±0.5° are realized. The safety and robustness of the system to environmental disturbance are improved, and it is more suitable for the modern electronic warfare system.
Keywords
Doppler frequency shift; Angle of arrival; Microwave photonics; Sagnac loop.
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
