Method and device for two-dimensional dynamic angle measurement and calibration of scanning camera swing mirror
A technology of scanning camera and calibration method, which is applied in the direction of measuring device, using optical device, testing optical performance, etc., to achieve the effect of large measurement and calibration range, guaranteed validity and high speed
Inactive Publication Date: 2016-08-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0007] The purpose of the present invention is to solve the problem of two-dimensional dynamic measurement and calibration of the swing mirror swing angle of the existing scanning camera, and propose a two-dimensional dynamic angle measurement and calibration method and device for the swing mirror of the scan camera
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[0041] Such as Figure 4 As shown, in the present embodiment, the synchronous acquisition system 4 is a high-speed multi-channel data acquisition and processing circuit based on FPGA, the polarization beam splitting system 6 is a polarization beam splitter flat film, the filter system 12 is a narrow-band filter, and the two-dimensional spot position detector 13 is A high-speed area array PSD detector, the target generator light source 22 is a wide-spectrum light source. The laser light source system 5 includes a laser 17 for emitting parallel laser light, a laser converging mirror 18 for converging laser light, a laser pinhole 19 for filtering and a laser collimator mirror 20 for collimating the filtered laser light source .
[0042] The laser light source system 5 of the two-dimensional dynamic angle measurement system 1 emits a parallel laser light source, passes through the polarization beam splitting system 6 and the quarter-wave plate 7, and then irradiates on the scanni...
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The invention belongs to the technical field of optical precision measurement, and relates to a two-dimensional dynamic angle measuring and calibrating method and device of a scanning camera mirror. The two-dimensional dynamic angle measuring and calibrating method and device can be used for measuring and calibrating parameters of the scanning camera mirror in real time. According to the two-dimensional dynamic angle measuring and calibrating method and device, an infinite target generation system is used for generating an infinite target, the infinite target provides a target source for a scanning camera to be detected through the scanning camera mirror for detection, a two-dimensional dynamic angle measuring system is used for performing two-dimensional real-time measurement on the oscillation angle of the scanning camera mirror, a synchronous acquisition system is used for synchronously acquiring data of the scanning camera to be detected and data of the two-dimensional dynamic angle measuring system in real time, and the data of the two-dimensional dynamic angle measuring system are used for calibrating the scanning camera mirror. The two-dimensional dynamic angle measuring and calibrating method and device of the scanning camera mirror have the advantages of being high in speed, wide in range, free of contact and the like and provide an effective solution for measurement and calibration of the parameters of the scanning camera mirror.
Description
technical field [0001] The invention belongs to the technical field of optical precision measurement, and relates to a scanning camera swing mirror two-dimensional dynamic angle measurement and calibration method and device, which can be used for real-time measurement and calibration of scanning camera swing mirror parameters. technical background [0002] The scanning camera is a key component of the camera in high-altitude reconnaissance equipment such as satellites and early warning aircraft. Its performance directly affects the resolution of the satellite's earth observation and the size of the field of view. , Scanning uniformity (linearity), scanning angle repeatability, scanning linear segment time, effective scanning field of view, scanning frequency, etc. are calibrated with high precision to facilitate the stitching, calculation and fusion of camera images. In the design of a satellite scanning camera, the scanning performance of the swinging mirror is the core per...
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IPC IPC(8): G01M11/02G01B11/26
Inventor 王允赵维谦邱丽荣
Owner BEIJING INSTITUTE OF TECHNOLOGYGY