Quick rotary ultra-width pendular satellite imaging method

Abstract

The invention discloses a quick rotary ultra-width pendular satellite imaging method, and relates to ultra-width pendular imaging methods. By the aid of the quick rotary ultra-width pendular satellite imaging method, the problems of incapability of meeting ultra-width imaging requirements on ground regions by conventional imaging methods and incapability of carrying out seamless splicing imaging on imaging regions of two adjacent orbits of a single satellite can be solved. The quick rotary ultra-width pendular satellite imaging method includes steps of firstly, computing the widths L<5> perpendicular to orbits; secondly, computing the widths L<1> in flight directions; thirdly, determining whether critical values of distances L2 of the centers of the optical axes of detectors on tracks of sub-satellite points on earth surfaces are the widths L<1> of the flight directions or not; fourthly, computing the spinning speeds of the detectors along the directions of the orbits; fifthly, computing corresponding resolution ratios A<c> of the detectors during ultra-width imaging under various orbit conditions; sixthly, computing horizontal frequencies F of CCD (charge coupled devices); seventhly, computing superposition distances L<6> among imaging regions of every two corresponding orbits and the like. The quick rotary ultra-width pendular satellite imaging method has the advantage that the quick rotary ultra-width pendular satellite imaging method can be applied to the field of ultra-width pendular imaging.

Description

technical field [0001] The invention relates to a satellite ultra-large-width swing-scan imaging method, in particular to a satellite fast-rotating ultra-wide-width swing-sweep imaging method. Background technique [0002] Push-broom imaging of satellites is generally done by placing the detector perpendicular to the flight direction of the satellite, and collecting images one line at a time as the satellite flies forward. The size of the image range depends on the field of view of the CCD in the detector. Generally, a larger field of view can be achieved by splicing multiple CCDs or increasing the side swing capability of the camera at the same time. This is currently the most common imaging method for optical remote sensing satellites. The satellite's swing imaging uses a mirror to reflect light into the detector, and uses the back and forth swing of the mirror to collect a measurement value on a pixel. This imaging method has expensive and easily damaged moving parts an...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the method that can only be used for static push-broom imaging, large-angle dynamic push-broom imaging, or satellite static mirror swing imaging for satellites. In order to solve the problem of seamless stitching imaging between orbital imaging areas, a fast-rotating satellite ultra-large-width swing-sweep imaging method is proposed

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