Abstract
Imaging lidar is widely used in the fields of national defense, military affairs and people's livelihood because of its high resolution and fast imaging speed. When the detection distance is large, the echo is relatively weak, and the echo photons impinging into each pixel of the detector array is very few, even single photon. The appearance of single photon imaging technology solves this problem. Single-photon imaging detection technology has attracted much attention as a new detection technology. In recent years, single-photon imaging radar have developed rapidly. The article introduces the working principle and key technology of single-photon imaging detection, and summarizes the development of single-photon radar. Finally, the article discusses the application of single-photon imaging detection in various fields in the future.
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