Research on wavelength hopping low probability of  intercept coherent LiDAR technology

Lingling Xu; Jianfeng Sun; Qian Xu; Zhiyong Lu; Longkun Zhang; Chaoyang Li; Weijie Ren; Yuxin Jiang; Hanrui Pan

doi:10.1117/12.3007838

24 November 2023 Research on wavelength hopping low probability of intercept coherent LiDAR technology

Lingling Xu, Jianfeng Sun, Qian Xu, Zhiyong Lu, Longkun Zhang, Chaoyang Li, Weijie Ren, Yuxin Jiang, Hanrui Pan

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129353U (2023) https://doi.org/10.1117/12.3007838
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

We propose a coherent light detection and ranging (LiDAR) with a low probability of intercept (LPI) based on wavelength hopping technology and phase-encoded random modulation technology to achieve long-range detection while reducing exposure risk. A theoretical analysis is constructed for the LPI LiDAR system. The multi-wavelength homodyne detection and distance estimation are achieved by the broadband 90° optical hybrid and the matched filter, respectively. Measurements are conducted under 1064 nm and 1550 nm due to the limitation of available light sources. The experimental results show that when the emission power of the two wavelengths is low, the designed LPI LiDAR can achieve sensorless detection with high distance accuracy at long distances. The used laser warning device cannot alarm the laser emitted by the designed LiDAR with continuous wave regime. The feasibility of the designed LiDAR system to realize silent detection is verified.

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

Citation Download Citation

Lingling Xu, Jianfeng Sun, Qian Xu, Zhiyong Lu, Longkun Zhang, Chaoyang Li, Weijie Ren, Yuxin Jiang, and Hanrui Pan "Research on wavelength hopping low probability of intercept coherent LiDAR technology", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129353U (24 November 2023); https://doi.org/10.1117/12.3007838

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KEYWORDS

LIDAR

Signal to noise ratio

Target detection

Emission wavelengths

Phase modulation

Laser applications

Laser countermeasures

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