Space reference calibration method and device for optical satellite pointing measurement system

A technology of optical satellites and measurement systems, applied in measurement devices, instruments, etc., can solve the problems of difficult and high-precision unification of space benchmarks

CN111174811BActive Publication Date: 2021-01-15BEIHANG UNIV +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-01-15

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Abstract

The embodiment of the invention provides a space reference calibration method and device for an optical satellite pointing measurement system. The method comprises steps of resampling an absolute output quantity of an absolute pointing measurement subsystem through a relative output quantity of a relative pointing measurement subsystem to obtain a sampling frequency normalization pointing parameter so as to obtain an internal space reference conversion time sequence parameter of the absolute pointing measurement subsystem; acquiring a space reference conversion time sequence parameter betweenthe absolute pointing measurement subsystem and the relative pointing measurement subsystem according to any space reference absolute pointing parameter sequence parameter and the relative output quantity; and constructing a space-time reference conversion model according to the absolute pointing internal space reference conversion time sequence parameter and the space reference conversion time sequence parameter between the absolute pointing measurement subsystem and the relative pointing measurement subsystem so as to perform space reference calibration of the pointing measurement system. The embodiment of the invention lays a foundation for high-efficiency and high-quality imaging and subsequent on-orbit application of a high-resolution optical satellite.
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Description

technical field

[0001] The invention relates to the technical field of high-resolution optical remote sensing satellite design and preprocessing, in particular to a space reference calibration method and device for an optical satellite pointing measurement system. Background technique

[0002] In order to achieve precise processing and services, high-resolution optical remote sensing satellites usually use a high-precision orbit measurement system to achieve high-precision spatial position acquisition, a high-precision space pointing measurement system to achieve high-precision spatial attitude perception, and a high-precision time unified system to achieve different payloads. High-precision synchronization of time and time, using high-precision on-orbit calibration methods and models to achieve high-precision calibration of system error parameters. Among them, for remote sensing satellites with an orbital altitude of 500-600 kilometers, a space pointing error of 1 arc secon...

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Embodiment Construction

[0067] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0068] With the rapid development of earth observation technology, in order to meet the current development needs of high spatial resolution and high time resolution, the configuration types of relative pointing measurement subsystems configured by optical remote sensing satellites are more diversified than before, mainly including conventional two...