Multi-slit Streak Camera, Electronic Control System Developed

Scannerless three-dimensional imaging lidar(3D-LIDAR) based on multi-slits streak camera(MSSC) is a hot topic in the field of lidar research. A 64×64 pixels scannerless 3D-LIDAR system, which uses a multi-slits streak tube to achieve range-resolved images, has been developed by an American laboratory. Its range precision is better than 2.5% of the range extent and its image rate is up to 100 Hz. Presently, there are no related domestic reports on this technology. An electronic control system for the multi-slits streak camera(MSSC) is designed and fabricated in this thesis so as to probe into scannerless three-dimensional imaging lidar.The main contents of this thesis are as follows:(1) The working principles of single slit streak camera and multi-silts steak camera as well as the cameras' application in three-dimensional imaging lidar are introduced.(2) The configuration of multi-slits streak tube three-dimensional imaging lidar system is presented. The scheme of light-electronic imaging part of this lidar system is introduced, with special attention to the working principle of the fiber optics image converter and the scheme of streak tube.(3) The function and design of each part of the electronic control system, including a shutter pulse generator, a sweep circuit and a delay circuit, are described. After elaborating the working principle, switching characteristic and components selecting principles of the MOSFET, a switch based on the series operation of MOSFETs are introduced. Then a shutter pulse generator and a sweep circuit based on this kind of switch are developed. A delay circuit is designed by using delay-line chips.(4) Some dynamic researches of the multi-slits streak camera are operated by using the camera and a Nd:YAG laser. The experimental results are presented and analyzed at last.