Abstract
The area array three-dimensional (3D) active imaging laser radar is a kind of remote sensing system which benefits high detection speed. This type of laser radars employ area optical modulation devices such as micro-channels plate (MCP) image intensifiers to modulate the photons flying time into intensity which can be detected by a charge coupled device (CCD). The distance measurement precision of this kind of laser radars is determined by the short noise of the photons numbers. This property limits the performance of this kind of laser radar. In this paper, a method based on second-order coherence is presented to compensate the short noise. The analysis result shows the photon bunching effect improves the SNR of the distance measurement with the same photon numbers. The second-order coherence based method is proposed to prove the 3D active imaging laser radar SNR. An experiment system is introduced which has results verified the theory.
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