3-D Imaging Lidar Based on Miniaturized Streak Tube

Abstract

Streak Tube Imaging Lidar (STIL), with advantages of non-scanning working mode, small distortion, high image framing rate, high resolution in low contrast environment, compact structure, easy miniaturization and high reliability, has a wide range of applications in military, aerospace, space confrontation, attack and defense, and marine law enforcement. This article introduces the principle of single-slit and multi-slit streak tube imaging lidar. It also introduces a single-slit general streak camera that can be used for imaging lidar. In addition, a multi-slit miniaturized streak tube with a single-lens focusing system with a total length of about 200 mm has been designed. The results of the 3D electromagnetic simulation show that the effective photocathode area of this streak tube reaches 36 mm × 36 mm, the temporal resolution is better than 50 ps, the dynamic spatial resolution can reach 12 lp/mm, and the whole photocathode can accommodate at least 19 slits in the effective detection range. The streak tube has a meshless structure, which is highly reliable. The streak tube can be used to increase the field of view of the imaging lidar system, improve the reliability, and achieve system miniaturization.

A Calibration Method for Time Dimension and Space Dimension of Streak Tube Imaging Lidar

“…With the development of different types of lidar, the three-dimensional (3D) lidar technique has been widely used in a variety of fields, including city construction, topographic mapping, underwater detection, and robotics [1][2][3][4][5]. Streak tube imaging lidar (STIL) has attracted great interest in recent years because of its wide field of view and fast data rate [6][7][8][9], which can be attributed to the detection system's ability to obtain hundreds of returns in one laser pulse.…”