Serial and parallel combined type field-of-view gating imaging method for star sensor

A technology of a star sensor and an imaging method, applied in the field of star sensors, can solve the problems of slow serial gating, aliasing, and parallel gating image compression, and achieve the effect of solving the slow serial gating speed

Active Publication Date: 2021-11-19
BEIHANG UNIV
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Problems solved by technology

[0005] The invention provides a serial-parallel combined field-of-view gating imaging method for star sensors, which solves the problems of slow serial gating speed and parallel gating image compression and aliasing

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  • Serial and parallel combined type field-of-view gating imaging method for star sensor
  • Serial and parallel combined type field-of-view gating imaging method for star sensor
  • Serial and parallel combined type field-of-view gating imaging method for star sensor

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[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0042] The invention provides a serial-parallel combination field-of-view gating imaging method for star sensors, which solves the problems of slow serial gating speed and parallel gating image compression and aliasing, making this field-of-view selection The star sensor with integrated imaging can realize the accurate measurement of the initial attitude and the transient attitude successively without external equipment, ...

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Abstract

The invention discloses a serial and parallel combined type field-of-view gating imaging method for a star sensor. The method comprises the following steps: S100, carrying out full-field serial gating imaging and full-field star map identification; S200, selecting a field of view, performing parallel gating imaging, and performing full-field attitude calculation to realize accurate measurement of attitude information; and S300, carrying out parallel gating imaging tracking. According to the invention, the initial attitude measurement of the star sensor is realized by adopting serial field-of-view gating imaging, and field-of-view imaging in a mutually different star map mode is gated in parallel, so that the accurate measurement of the transient attitude of the star sensor is realized and problems of low serial gating speed, inaccurate star point positioning and low measurement precision are solved; meanwhile, problems of parallel gating star point image compression, aliasing and incapability of measurement are solved, so that the star sensor for field-of-view gating imaging can realize accurate measurement of an initial attitude and a transient attitude in sequence without external equipment.

Description

technical field [0001] The invention relates to the technical field of star sensors, in particular to a serial-parallel combined field-of-view gating imaging method for star sensors. Background technique [0002] The star sensor is an attitude measurement sensor that uses stars as a reference source. It has the advantages of high precision, strong anti-interference, and fully autonomous attitude determination without relying on other equipment. It has been widely used on satellite platforms. Extending the use of star sensors from the outer space environment of the atmosphere to the near-earth space environment can make ships, aircraft, missiles and other near-earth space platforms free from dependence on satellite navigation systems, and has broad application prospects, but the star sensor needs to have The ability to detect faint stellar targets under strong skylight background conditions. [0003] The patent "A Daytime Star Sensitive Imaging System Based on Field of View ...

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Application Information

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IPC IPC(8): G01C21/02
CPCG01C21/025
Inventor 张广军江洁魏新国陈诚马岩
Owner BEIHANG UNIV
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