Microwave photonic sparse radar with a high range resolution

Cong Ma; Fengting Cao; Yue Yang; Xiangchuan Wang; Jiangtao Zhang; Shifeng Liu; Shilong Pan

doi:10.1117/12.2617696

15 February 2022 Microwave photonic sparse radar with a high range resolution

Cong Ma, Fengting Cao, Yue Yang, Xiangchuan Wang, Jiangtao Zhang, Shifeng Liu, Shilong Pan

Proceedings Volume 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021); 121665W (2022) https://doi.org/10.1117/12.2617696
Event: Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 2021, Hong Kong, Hong Kong

Abstract

High-range resolution microwave radars are greatly important for automatic drive, security check, topographic mapping, etc. However, the generation and processing of broadband signals still challenge to state-of-the-art electronics. Besides, the broadband signal with a continuous spectrum is susceptible to interference from complex electromagnetic signals in the environment. Here, we present a microwave photonic radar with a sparse stepped-frequency chirp (SFC) signal, aiming to realize a high-range resolution detection with enhanced anti-jamming capability. With a recirculating frequency-shifting loop modulated by MHz radio frequency (RF) signal, a sparse SFC signal with a bandwidth of several GHz can be easily produced for radar target detection. In addition, microwave photonic de-chirping and compressive reconstruction are performed to achieve fast high-range resolution detection. Experimental results show that the proposed radar could provide a sub-centimeter level range resolution and a millimeter-level precision.

Citation Download Citation

Cong Ma, Fengting Cao, Yue Yang, Xiangchuan Wang, Jiangtao Zhang, Shifeng Liu, and Shilong Pan "Microwave photonic sparse radar with a high range resolution", Proc. SPIE 12166, Seventh Asia Pacific Conference on Optics Manufacture and 2021 International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2021), 121665W (15 February 2022); https://doi.org/10.1117/12.2617696

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