Space target falling multi-model tracking guiding technology

Abstract

The invention discloses a space target falling multi-model tracking guiding technology. The space target falling multi-model tracking guiding technology comprises the steps of analyzing a space targetfalling forecast principle, syntheticallyusing a plurality of atmosphere models, combining an observation station tracking arc segment to calculate an atmosphere coefficient of drag CD, and combiningradar measuring data to correct the atmosphere coefficient of drag CD and a falling forecast calculation. The space target falling multi-model tracking guiding technology is scientific and reasonable, is safe and convenient in utilization, combines orbit dynamicscharacteristics of a falling target and adaptive ranges of the various atmosphere models, adopts methods of atmosphere model switching and damping factor discrete solution to perform falling forecasts, improves the accuracy of the falling forecasts and can be further adapted to calculation and forecast of a super-low orbit, and combines a tracking arc segment to perform CD value estimation.A discrete variation of a CD value accords with a variation trend of measured atmosphere as far as possible, the multiple atmosphere models aresynthetically used in the quick guiding process, the atmosphere models are replaced along with the change of heights, and according to the space target falling multi-model tracking guiding technology, errors of the space target falling forecastsare reduced to less than 10%.

Description

technical field [0001] The invention relates to the technical field of measurement, control and management of orbiting spacecraft, in particular to a multi-model tracking and guidance technology for space target fall. Background technique [0002] Since humans entered space in 1957, about 7,000 spacecraft have entered space, of which more than 600 satellites have fallen naturally, and space activities have produced debris over hundreds of thousands of centimeters. There are more and more spacecraft falling events , in order to reduce the loss caused by the fall of the spacecraft, the prediction of the fall needs to be as accurate as possible, but the accuracy of the fall is difficult to meet the requirements of the property safety of the ground personnel. The main reason for the error is the error of the dynamic model of the spacecraft and the proximity The amount of observation data obtained before the fall of the fallen target is small and the quality is poor; [0003] Du...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a space target fall multi-model tracking and guidance technology, which can effectively solve the satellite fall prediction proposed in the background technology above. The numerical integration method can be directly integrated to the landing time, and the life of the satellite and the fall location can also be given, but due to Atmospheric density changes are complex, and the attitude of the satellite during motion is also uncertain, so it is difficult to accurately calculate the orbital life and fall location, because the current atmospheric density models have different scopes of application, and each has its own error problems

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