Device for improving imaging laser radar depth of field of multi-slit streak tube
A laser radar and streak tube technology, which can be used in measurement devices, re-radiation of electromagnetic waves, utilization of re-radiation, etc., and can solve problems such as decreased spatial resolution.
Inactive Publication Date: 2012-06-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
Due to the limitations of the optical fiber converter in the receiving system and the photocathode of the striped tube, its area cannot be made very large, that is, if the interval between the slits is to be increased, the number of slits must be reduced, that is, the corresponding The number of fibers, which will inevitably lead to a decrease in spatial resolution
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] A device for improving the depth of field of multi-slit stripe tube imaging lidar, the device includes a receiving telescope 1, an optical fiber converter 2, a light cone 3, a stripe tube 4, a CCD camera 5 and a synchronization circuit 6, such as figure 1 As shown; the optical fiber converter 2 is composed of 32*32 optical fibers of equal length, and the receiving and input ends 2-1 of the optical fiber converter 2 are arranged in an array A of 32*32, as figure 2 As shown; the two output ports A2-2 and output port B2-3 of the optical fiber converter 2 are arranged in arrays A1 and A2 of 128*4 respectively, and the subscripts in the array represent the rows and columns corresponding to the positions of the optical fibers; with The first four rows of array A are examples. The first row of the first four rows is numbered 1-32 from left to right, t...
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The invention relates to a device for improving the imaging laser radar depth of field of a multi-slit streak tube, which is a laser three-dimensional imaging device and belongs to the technical field of photoelectric imaging. The device comprises a receiving telescope, an optical fiber converter, a light cone, a streak tube, a CCD (Charge Coupled Device) camera and a synchronous circuit. The optical fiber converter consists of 32*32 optical fibers with the same lengths. Receiving input ends of the optical fiber converter are distributed in a mode of a 32*32 array A. Two output ends A and B of the optical fiber converter are respectively arranged in modes of 128*4 arrays A1 and A2. According to the device, the two image output ends of the optical fiber converter are arranged and combined again, two paths are output, and a longitudinal imaging region corresponding to each slit is doubled, i.e. the depth of field of a detection system is doubled; and according to the specific arrangement mode of the optical fiber image output ends, two images are subjected to reconstruction of a specific algorithm, so that a three-dimensional image of a target can be recovered.
Description
technical field [0001] The invention relates to a device for improving the depth of field of multi-slit stripe tube imaging laser radar, which is a laser three-dimensional imaging device and belongs to the technical field of photoelectric imaging. Background technique [0002] Multi-slit striped tube imaging lidar technology is a three-dimensional area array imaging technology. Compared with other scanning imaging system technologies, it has the advantages of high imaging frame rate, large field of view, and high distance resolution. It has great potential in military, aerospace and other fields. Huge application potential. In the imaging laser radar system based on the multi-slit stripe tube, the spatial resolution is determined by the number of fibers of the fiber converter in the receiving system, that is, the more the number of fibers, the higher the spatial resolution of the system; and the system can detect The distance depth (depth of field) is determined by the long...
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Login to View More IPC IPC(8): G01S7/481G01S17/89
Inventor 韩绍坤马晨宁赵文
Owner BEIJING INSTITUTE OF TECHNOLOGYGY