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A sun sensor and a sun direction vector determining method

A sun direction vector and sun sensor technology, applied in the field of aerospace, can solve the problem of narrow measurement field of view, achieve the effect of reducing surface reflection and improving the measurement accuracy of the sun direction vector

Active Publication Date: 2016-10-26
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0007] The invention discloses a solar sensor to solve the problem of narrow measurement field of view existing in the solar sensor described in the background art

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the technical solutions in the present invention, 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 The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figure 1-3 , the embodiment of the invention discloses a solar sensor. The disclosed sun sensor includes a sun light sensing device 100 and a sun direction vector calculating device 200 .

[0037] There are two solar photosensitive devices 100 , each of which includes an output current collection and control ci...

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Abstract

A sun sensor and a sun direction vector determining method are disclosed. The sun sensor comprises sunlight sensing devices (100) and a sun direction vector calculator (200). The sunlight sensing devices (100) comprise output current collecting and controlling circuits, solar cell sheets (110) and supporting structures (120). The output current collecting and controlling circuits are respectively connected to the sun direction vector calculator (200) and the solar cell sheets (110). The supporting structures (120) have regular pentagonal pyramid stages (121). The top surface and five side surfaces of each of the regular pentagonal pyramid stages (121) are provided with the solar cell sheets (110). The number of the sunlight sensing devices (100) is two. The two sunlight sensing devices (100) are respectively mounted at two sides of a satellite. The regular pentagonal pyramid stages (121) of the two sunlight sensing devices (100) are parallel and opposite to each other. Through the technical scheme mentioned above, a problem that sun sensors at present are narrow in measurement fields of view is overcome.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a sun sensor and a method for determining a sun direction vector. Background technique [0002] The sun sensor is one of the more important attitude measurement components of the satellite. The sun sensor calculates the attitude of the satellite relative to the sun by observing the projected position of the sun on its sensitive unit. The attitude of the satellite in the earth-centered inertial coordinate system can be calculated by combining the sun sensor with the information detected by other sensors (such as magnetic field information). [0003] At present, there are three main types of solar sensors: 0 / 1 solar sensor, analog solar sensor and digital solar sensor. Among them, the 0 / 1 sun sensor mainly detects whether the sun appears in its field of view. When the sun appears, the output of the 0 / 1 sun sensor is 1; when the sun does not appear, the output of the 0 / 1 sun s...

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Application Information

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IPC IPC(8): G01C21/02G01C1/00
CPCG01C1/00G01C21/02
Inventor 绳涛庹洲慧赵勇陈小前宋新杨磊白玉铸
Owner NAT UNIV OF DEFENSE TECH
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