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High-precision attitude detection method of static infrared earth sensor

A technology of earth sensor and detection method, which is applied in the direction of instruments, measuring devices, measuring angles, etc., can solve the problems of mutual constraints between resource allocation and image data storage, and achieve the effect of ensuring accuracy and reliability and reducing demand

Active Publication Date: 2012-10-10
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

On this basis, a corresponding infrared earth sensor attitude detection method is provided to solve the problem of mutual constraints between platform resource allocation and image data storage, and improve performance such as attitude detection accuracy and data update rate

Method used

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  • High-precision attitude detection method of static infrared earth sensor
  • High-precision attitude detection method of static infrared earth sensor
  • High-precision attitude detection method of static infrared earth sensor

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Embodiment Construction

[0074] The method of the present invention has been verified on the infrared earth sensor information processing platform, through the binarized image simulation of the medium and high orbit height horizon circle imaging, to evaluate the angle measurement range and accuracy of the attitude detection method provided by the present invention. Angular accuracy.

[0075] In the infrared earth sensor information processing platform, set the working orbit height of the infrared earth sensor, and input a set of pitch and roll test attitude angles to the information processing platform. The information processing platform inverts the pitch and roll test attitude angles into the coordinates of the center of the horizon circle, and generates a corresponding binary horizon circle image according to the current working orbital height of the infrared earth sensor.

[0076] The infrared earth sensor information processing platform reads the 8-row and 8-column data of the above binarized hor...

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Abstract

The invention discloses a high-precision attitude detection method of a static infrared earth sensor, which is used for carrying out attitude detection on spacecrafts running in a middle or high orbit. Based on such a feature that the imaging size of a horizon imaged on a focal plane changes significantly when the spacecrafts run at a height of the middle or high orbit, the invention designs a suitable image gridline scanning project, reads 8 rows and 8 columns of data of an infrared area array image and designs a corresponding high-precision attitude detection method, acquires the position of a horizon center, and outputs an attitude angle. A detailed attitude detection process is shown in figure 1. The high-precision attitude detection method of the invention solves the contradiction between huge amounts of data of a traditional static infrared earth sensor area array image and a limited storage capacity, having the advantages of small amount of data storage, high-precision attitude detection, high data updating rate, and the like.

Description

technical field [0001] The invention relates to an infrared earth sensor for space vehicles. Specifically, it refers to a method for high-precision attitude detection of static infrared earth sensors, which is used for attitude detection of space vehicles running on medium and high orbits. Background technique [0002] The infrared earth sensor is an aircraft attitude optical sensor that is based on the principle of being sensitive to the infrared radiation of the attitude reference source earth, and realizes the detection of local vertical roll and pitch attitude information of the space vehicle in orbit. The infrared earth sensor is mainly composed of an optical detection part and an information processing part, and some also include a mechanical scanning part. Infrared earth sensors can be divided into scanning type and static type according to whether they contain mechanical scanning components. [0003] The scanning infrared earth sensor uses moving mechanical parts t...

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Application Information

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IPC IPC(8): G01C1/00
Inventor 凌丽韩开亮崔维鑫王亚楠董栋刘石神孙浩于远航
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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