Full-waveform LiDAR systems have been developed owing to their superiority in terms of high precision and resolution. However, further improving the imaging speed and resolution continues to be a problem. In this study, we propose an optical orthogonal code division multiple access (OCDMA) coding and 3D imaging technique, and a non-scanning full-waveform LiDAR system is first demonstrated. Encoding, multiplexing, and decoding are the essential modules of the OCDMA LiDAR system, which use M detectors and N-bits code to achieve high-accuracy decomposition for M x N pixels. In this paper, a complete 3D imaging LiDAR system is introduced, and the implementation of encoding and decoding is also illustrated. To prove that the technology is scientific and effective, an imaging experiment is carried out. The experimental result indicates that a system with only four avalanche photodiodes (APDs) can achieve 256 pixels. Moreover, the vertical resolution is about 1.8 cm and the range resolution is 15 cm at the distance of 40 m. (C) 2019 Optical Society of America
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机译：由于高精度和分辨率，由于其优越性而开发了全波形激光雷达系统。然而，进一步提高成像速度和分辨率仍然是一个问题。在本研究中，我们提出了一种光学正交码分多次访问（OCDMA）编码和3D成像技术，并且首先对非扫描全波形LIDAR系统进行说明。编码，多路复用和解码是OCDMA激光雷达系统的基本模块，它使用M检测器和N比特代码来实现M X N像素的高精度分解。在本文中，还引入了完整的3D成像激光雷达系统，并且还示出了编码和解码的实现。为了证明该技术是科学和有效的，进行了成像实验。实验结果表明，仅具有四个雪崩光电二极管（APD）的系统可以实现256像素。此外，垂直分辨率约为1.8cm，在40米的距离处的范围分辨率为15厘米。 （c）2019年光学学会
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