Underwater depth imaging of a single photon lidar system based on polarization suppression

【摘要】 In this work, we demonstrate a single-photon lidar based on a polarization suppression underwater backscatter method.The system adds polarization modules at the transmitter and receiver, which increases the full width at half-maximum of the system response function by about 5 times, improving the signal-to-background ratio, ranging accuracy, and imaging effect. Meanwhile, we optimize a sparsity adaptive matching pursuit algorithm that achieves the reconstruction of target images with a 7.3 attenuation length between the system and the target. The depth resolution of the system under different scattering conditions is studied. This work provides a new method for underwater imaging.更多还原

【Abstract】 In this work, we demonstrate a single-photon lidar based on a polarization suppression underwater backscatter method.The system adds polarization modules at the transmitter and receiver, which increases the full width at half-maximum of the system response function by about 5 times, improving the signal-to-background ratio, ranging accuracy, and imaging effect. Meanwhile, we optimize a sparsity adaptive matching pursuit algorithm that achieves the reconstruction of target images with a 7.3 attenuation length between the system and the target. The depth resolution of the system under different scattering conditions is studied. This work provides a new method for underwater imaging.更多还原