Method for implementing satellite side-sway automotive image live transmission

Abstract

The invention relates to a realization method for the real-time transmission of satellite lateral motion image, which is characterized in that: a complete satellite adopts four control antennae for transceiver, so that the control antenna beam is in omnidirectional coverage after the satellite being moved laterally; the complete satellite is controlled to move laterally, continuously and rapidly in a large angle by a momentum wheel; the satellite attitude is measured by using a whirligig in the process of lateral motion; and the satellite crab angle can be calculated in real time, simultaneously, the drift angle can be controlled, so the satellite lateral motion is set to a swinging angle scope stably. In the phase of satellite bias flight, a star sensor and the whirligig are adopted for united attitude determination to the satellite; the camera integral time is calculated in real time by a GPS receiver according to the satellite orbit and latitude; the camera will generate exposure and imaging according to the integral time; the imaging data after the lateral motion can be transmitted to the ground by the satellite through an array data transmission antenna. The realization method for the real-time transmission of satellite lateral motion image has the advantages that: the large-angle lateral motion of the satellite can be realized; thereby the camera development difficulty because of camera wabble or swing mirror addition can be lowered; the visual range of the satellite can be expanded; and the revisit cycle of the satellite can be increased.

Description

technical field [0001] The invention relates to a method for realizing real-time transmission of satellite images, in particular to a method for realizing real-time transmission of satellite side swing maneuver images. Background technique [0002] At present, the high-resolution light and small cameras carried by low-orbit satellites generally have a width of tens of kilometers, and the return period is as high as dozens of days, which cannot guarantee the timeliness of ground observation and reconnaissance. Day, need to consider some way to expand the viewable range of the camera. At present, none of the satellites in orbit in my country has the function of side-swaying the whole star. In order to expand the visual range of the camera, they all adopt the method of swinging the camera or adding a swing mirror. For example, the ZY-1 satellite adopts the swing mirror swing method, and the XX-3 satellite adopts The whole camera swing method, these methods need to increase the ...

AI Technical Summary

Problems solved by technology

[0002] At present, the high-resolution light and small cameras carried by low-orbit satellites generally have a width of tens of kilometers, and the return period is as high as dozens of days, which cannot guarantee the timeliness of ground observation and reconnaissance. God, need to think of some way to expand the viewable range of the camera

At present, none of the satellites in orbit in my country has the function of side-swaying the whole star. In order to expand the visual range of the camera, they all adopt the method of swinging the camera or adding a swing mirror. For example, the ZY-1 satellite adopts the swing mirror swing method, and the XX-3 satellite adopts The whole camera swing method, these methods need to increase the rotation mechanism, the work is not flexible, at the same time, the rotation parts will cause interference to the whole satellite, causing changes in the satellite attitude, and the control subsystem is required to offset these interferences, these working methods have increased Camera and control subsystem complexity

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