Integration star sensor based on biology compound eye structure and use thereof

A technology of star sensor and compound eye, which is applied in the field of integrated star sensor, can solve the problems of increasing field of view limitation, unfavorable star sensor miniaturization, and limited ability of single star measurement accuracy, so as to achieve accurate calculation of star barycenter position , Enhance the ability of stray light interference, reduce the size of the hood

A technology of star sensor and compound eye, which is applied in the field of integrated star sensor, can solve the problems of increasing field of view limitation, unfavorable star sensor miniaturization, and limited ability of single star measurement accuracy, so as to achieve accurate calculation of star barycenter position , Enhance the ability of stray light interference, reduce the size of the hood

CN101451844AInactive Publication Date: 2009-06-10HEFEI UNIV OF TECH
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  • Integration star sensor based on biology compound eye structure and use thereof
  • Integration star sensor based on biology compound eye structure and use thereof
  • Integration star sensor based on biology compound eye structure and use thereof

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Embodiment 1

[0064] like figure 2 , image 3 and Figure 4 As shown, the structural composition of this embodiment includes: shading cover 2, some ommatidia installed on the hemispherical base 10, star map readout circuit 9, star map processing and star map identification system 5, power interface 4 and data communication The interface 6, wherein the ommatidium includes an optical lens system 8, an image sensor APS7 and an extinction hollow circular platform 3.

[0065] like figure 2 , image 3 As shown, 9 ommatidia (numbered A~I) with non-overlapping fields of view are distributed in two orthogonal planes passing through the line connecting the top of the hemisphere and the center of the sphere, and the optical axes of adjacent ommatidia in the same plane The included angle is 45°, and the optical axis of ommatidia passes through the center of the sphere. Therefore, the optical axes of ommatidia A, C, E, F, and I are perpendicular to each other; the optical axes of ommatidia B and ...

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Abstract

An integral star sensor based on biological compound eye structure and the application thereof; the star sensor is set as multi field coverage star sensor based on biological compound eye structure, and forms each independent small eye by the electro-optical imaging system in the small field coverage and forms the large field coverage star sensor by a plurality of small eyes; the optical channel between the optical lens and image sensor CCD / APS in the electro-optical imaging system is round hole; in the large field coverage star sensor, the small eyes are located at the semicolumn surface or hemisphere surface, and the optic axis of the small eye is orthometric with axis of the column; the fields coverage of the adjacent small eyes are not overlapped. The invention uses a plurality of independent small field coverage with high spatial resolution to realize the large field coverage to take more stars, which greatly increases theta sep and realizes to improve the precision of the star sensor from two aspects of n and theta sep.

Description

technical field [0001] The invention belongs to the technical field of attitude sensors, and in particular relates to a bionic star sensor star map ingestion and star pair extraction used in aviation, navigation and missile autonomous navigation, and an integrated star sensor based on a biological compound eye structure that improves the accuracy of the star sensor. sensor. Background technique [0002] The star sensor is one of the important components of the spacecraft attitude measurement system. It uses the identification of the star orientation to provide the spacecraft with a three-axis attitude in the inertial coordinate system. Compared with other attitude measurement components such as sun sensors, star sensors have the advantages of high precision, high reliability, and strong ingestion and tracking capabilities, so they have become necessary instruments for various spacecraft attitude measurements. Star sensors can be used in aviation, navigation and autonomous n...

Claims

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Application Information

Patent Timeline
10 Jun 2009
Publication
CN101451844A
IPC
G01C21/02
Inventors
张仁斌; 高隽