Converting method and device for measuring daturm of sun sensor

A sun sensor and measurement reference technology, which is applied in the direction of comparison with reference electrical parameters, astronomical navigation, etc., can solve the problems of difficult processing, need for machining accuracy, and low accuracy of reference conversion, and achieve the processing and installation process Simple, easy-to-operate effect

Inactive Publication Date: 2007-10-03
BEIHANG UNIV
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Problems solved by technology

This method needs to install the mirror cube to a reference position that has a strict and accurate positional relationship with the solar sensor measurement coordinate system, which requires not only machining accuracy, but also installation accuracy, which results in large processing difficulty and complicated installation process, and due to The measurement coordinate system of the sun sensor is invisible, and it is difficult to direct high-precision positioning mechanically, resulting in low accuracy of datum conversion

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  • Converting method and device for measuring daturm of sun sensor
  • Converting method and device for measuring daturm of sun sensor
  • Converting method and device for measuring daturm of sun sensor

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Embodiment Construction

[0012] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0013] As shown in Figure 1, the conversion device of the present invention includes an optical platform 10, a solar simulator 11, a high-precision two-axis turntable 13, an aperture receiving screen 12, and a charge coupled device (CCD, Charge Coupled Device) image positioning and aiming system. They are all existing devices, the optical platform 10 adopts the WSZ-1 optical experiment platform of Tianjin Tuopu Co., Ltd., and the high-precision two-axis turntable 13 adopts the measuring turntable of the model KJ 2100C developed by the Automatic Control Department of Beihang University (accuracy ±0.4 "), the solar simulator 11 adopts the 96000 type solar simulator of Newport--Oriel company. The camera in the image positioning aiming system adopts the Minton368P type CCD camera of Minton company. Because these devices are all existing, its structure and function e...

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Abstract

The converting method for measuring datum of sun sensor includes calibrating the inside and outer parameters of sun sensor with a sun simulator and a high precision two-axis turntable. A diaphragm receiving screen is set between the sun simulator and the sun sensor, and a CCD image locating and aligning system is used to judge the verticality of the simulating sunlight to the reflecting surface of the cubic mirror, so as to complete the measurement on the vector relation of two reflecting surface normal directions of the cubic mirror and simulating sunlight. By means of the vector relation and the outer parameters of the sun sensor, the converting matrix for conversion from the measuring coordination system of the sun sensor to the coordination system of the cubic mirror is determined. Corresponding conversion is completed. The device for the converting method is also disclosed. The present invention has simple method and high precision.

Description

technical field [0001] The invention relates to the measurement technology of a solar sensor, in particular to a method and a device for converting a measurement reference of a solar sensor. Background technique [0002] The solar sensor is sensitive to solar radiation and obtains the orientation of the spacecraft relative to the sun. It is mainly used to measure the angle between the sun's line of sight and a certain body axis or plane of the spacecraft. The sun line of sight directly measured by the sun sensor is defined in the sun sensor measurement coordinate system, or in other words, the sun sensor measurement coordinate system is used as the measurement reference. In order to be able to convert the directly measured solar line of sight to the moving carrier coordinate system in actual use, it is necessary to establish an observable measurement datum on the sun sensor casing, that is, first set a conversion parameter, and rely on precise processing to meet Transform p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/02G01J1/26
Inventor 张广军江洁樊巧云杨建
Owner BEIHANG UNIV
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