Method and system for controlling space optical remote sensors on basis of geomagnetic latitude

Abstract

The invention provides a method for controlling space optical remote sensors on the basis of geomagnetic latitude. The method includes computing the geomagnetic latitude corresponding to sub-satellitepoint tracks of satellites for carrying the space optical remote sensors at preset periods; computing hemispherical locations corresponding to the sub-satellite point tracks of the satellites at preset periods; computing change trend of the geomagnetic latitude corresponding to the sub-satellite point tracks of the satellites for carrying the space optical remote sensors at preset periods; determining regions where the space optical remote sensors are positioned in orbits on the basis of the hemispherical locations corresponding to the sub-satellite point tracks of the satellites for carryingthe space optical remote sensors and the change trend of the geomagnetic latitude; allowing the space optical remote sensors to work in preset working modes corresponding to the regions where the space optical remote sensors are positioned in the orbits under the control. The method has the advantage that the working modes of the space optical remote sensors can be automatically controlled according to the corresponding geomagnetic latitude in in-orbit flight procedures of the space optical remote sensors around the earth. The invention further discloses a system for controlling the space optical remote sensors on the basis of the geomagnetic latitude.

Description

technical field [0001] The invention relates to the technical field of control of aerospace optical remote sensors, in particular to a control method and system for space optical remote sensors based on geomagnetic latitude. Background technique [0002] Each aerospace optical remote sensor has different working modes and mode conversions during orbit around the earth according to its own mission. Most of the working modes and mode conversions are related to the position of the earth. For example: the camera is aimed at a certain position on the earth. Calibration and shooting, etc. [0003] In the past, the working mode and mode switching of aerospace optical remote sensors were controlled based on the on-orbit flight time, that is, the ground estimated the on-orbit flight time of the start and end of the working mode and the working mode conversion, and then sent injection instructions from the ground to the aerospace optical remote sensor. The aerospace optical remote se...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of controlling the working mode and mode conversion of aerospace optical remote sensors based on the flight time in orbit are: more ground participation, unable to realize automatic control of working mode and automatic mode conversion, and low efficiency; The limitation of the data transmission link, that is, the data transmission rate between the sky-ground link is low, and the transmission time for the injection command with a large amount of data is long, and the transmission of the injection command needs to be started a long time in advance; due to the start of the ground estimated working mode There may be errors in the on-orbit flight time of , end and working mode switching, which will affect the accuracy of the working mode and mode switching control. A large amount of redundant image data, if the estimated on-orbit flight time is delayed, the target position will not be captured

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