Single-Pixel Imaging LiDAR with Random-Modulated CW Laser for Application to 3D LiDAR

Single-pixel imaging (SPI), or computational ghost imaging, acquires spatial information of a target by illuminating it with time-varying patterns generated by a spatial light modulator or a digital micro-mirror device (DMD) [1], [2]. Both continuous-wave (CW) and pulsed laser can be used as a source of SPI, but the advantage of using pulsed laser is extensibility to three-dimensional SPI [3]. Under the condition of weak-illumination or large channel loss, because the image is hard to reconstructed, pulsed laser SPI based on time-correlated single-photon-counting technique was proposed [4]. But, in this scheme, the range for three-dimensional SPI is limited since the laser has fixed repetition time. In this work, we present a single-pixel imaging LiDAR system using random-modulated CW laser and show the measured results (reconstructed image and distance of target). With our system, three-dimensional SPI can be done in long unambiguous range [5].