Research progress and trend analysis of non-scanning laser 3D imaging radar

The non-scanning laser 3D imaging radar has the advantages of small size, light weight, high resolution, high precision and distortion-free imaging of dynamic targets, and has become the focus and hotspot of research in many countries. In this paper, we describe the basic principles of seven kinds of non-scanning laser three-dimensional imaging radar systems and distance gated imaging technology, such as flash, photon counting and gain modulation. The progress of the research is traced and summarized, and the technical advantages and disadvantages of each system are compared and analyzed. The trend is analyzed from the perspective of core devices. The results show that the method of using 2D sensor to convert time information on the optical level to realize 3D imaging has the characteristics of high resolution, high energy utilization and high signal-to-noise ratio, and has outstanding advantages and application prospects in aerospace, surveying and mapping, military and civil fields.