Main mirror face deformation detecting method and system for space reflection type optical remote sensor

Abstract

The invention discloses a primary mirror surface distortion detection system of a spatial reflection type optical remote sensor. And all are rigidly connected with the primary mirror; the present invention also discloses a method for detecting the surface distortion of the primary mirror of a spatial reflective optical remote sensor. Each sampling mirror, secondary mirror and beam splitter reflects the position of the center of mass of each spot formed on the detection device, and obtains the position deviation of the center of mass of each spot before and after distortion; according to the deviation, calculate the local slope change of the primary mirror at each sampling mirror; Then the shape distortion distribution of the primary mirror is obtained. With the invention, the detection of the shape change of the primary mirror is less restricted by objective conditions, the energy consumption is small, the concealment is strong, sufficient signal-to-noise ratio can be provided, the structure required for detection is simple and reliable, and the detection process is simple and convenient.

Description

technical field [0001] The invention relates to a detection technology of the main mirror surface distortion of a reflective optical imaging system, in particular to a detection method and system for the main mirror surface distortion of a spatial reflection optical remote sensor. Background technique [0002] With the development of space science and technology, space optical remote sensors are playing an increasingly important role in the acquisition of ground information. For example, space optical remote sensors can be used for forest fire early warning, weather forecasting, crop monitoring, and especially space reconnaissance. etc. The space optical remote sensor has the advantages of wide monitoring range, high resolution, and strong real-time performance. It is a modern, high-performance, and non-territorial space monitoring tool. It has become a space project that various countries are competing to develop. [0003] In practical applications, due to factors such as ...

AI Technical Summary

Problems solved by technology

However, this method needs to install a mechanical scanning device not smaller than the aperture of the primary mirror outside the primary mirror. The structure is relatively complex, the weight is heavy, and the detection time is prolonged due to the use of sequential scanning, which is not very suitable for space optical remote sensors.

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