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A method for high-precision autonomous emergency response onboard

An emergency response, high-precision technology, applied in the aerospace field, can solve problems such as not being able to satisfy rapid observation at the same time, and achieve the effect of improving emergency response capabilities

Active Publication Date: 2021-11-23
SHANGHAI ENG CENT FOR MICROSATELLITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing satellite rapid response method mainly realizes the satellite's rapid observation requirement of the target area by adopting the satellite attitude roll strategy; through the ground calculation orbit change strategy, the satellite reaches the target point, and realizes the satellite's high-resolution observation requirement of the target area ; but the existing technology cannot meet the two requirements of fast observation (usually using the satellite attitude roll strategy) and high-resolution observation (usually using the ground calculation orbit change strategy)

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  • A method for high-precision autonomous emergency response onboard
  • A method for high-precision autonomous emergency response onboard
  • A method for high-precision autonomous emergency response onboard

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Embodiment Construction

[0014] The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings and the embodiments of the present application.

[0015] This application provides a method for on-board high-precision autonomous emergency response, which includes the following steps:

[0016] (1) Calculate the geocentric longitude of the intersection point of the track where the target point is located and the equatorial plane:

[0017] 1) Calculate the normal vector of the orbital surface

[0018] a) Calculate the normal unit vector of the satellite's current orbital plane

[0019] Calculate the position velocity R of the satellite's current point according to the following formula 0 =[R 0x R 0y R 0z ], V 0 =[V 0x V 0y V 0z ]

[0020]

[0021] Among them, R in ,V in is the position velocity of the satellite's current point (ground-fixed coordinate system), R 0 ,V 0 is the position velocity of the curren...

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Abstract

This application relates to a method for on-board high-precision autonomous emergency response, which includes the following steps: (1) calculating the geocentric longitude of the intersection point of the orbit where the target point is located and the equatorial plane; (2) calculating the geocentric longitude of the satellite at the equator during orbit control (3) Calculate the emergency response time.

Description

technical field [0001] The present application relates to the field of aerospace technology, in particular to a method for on-board high-precision autonomous emergency response. Background technique [0002] Earth observation satellites use spaceborne sensors to obtain information on the earth's surface, which can be widely used in land resource census, urban planning, environmental protection and other fields. When more and more disaster relief missions rely more and more on satellite systems, some new requirements have emerged, mainly including the following aspects: 1) counter-terrorism and stability maintenance, and quickly strengthen intelligence collection and analysis of a key area; 2) response to hotspot areas , to respond to emergencies of ships in the surrounding waters in a targeted manner; 3) disaster rescue, to carry out rescue and assessment work for sudden major natural disasters. These new satellite application requirements are extremely sudden and short-liv...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/20
CPCG01S19/20
Inventor 齐金玲吴会英周美江姬聪云陈宏宇付碧红
Owner SHANGHAI ENG CENT FOR MICROSATELLITES