Method and device for processing signal of hole array sun sensor

A technology of signal processing device and solar sensor, which is applied in the direction of measuring device, measuring sunlight, and transmitting sensing components by optical device, which can solve the problems of large amount of data, small holes that cannot transmit light, and increase the burden of processing computers. Achieve the effect of improving reliability, saving resources and realizing high integration

Inactive Publication Date: 2008-07-23
BEIHANG UNIV
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Problems solved by technology

These two working methods are bound to increase the burden on the processing computer, and the relevant data of the entire image needs to be transmitted to the processing computer, resulting in a large amount of transmitted data, and its transmission speed limits the improvement of the attitude update rate of the sun sensor
[0004] In addition, the optical system of the sun sensor may be polluted and some small holes cannot transmit light. Therefore, it is necessary to ensure that the attitude calculation can still be performed in this case, so as to improve the reliability of the sun sensor.

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  • Method and device for processing signal of hole array sun sensor
  • Method and device for processing signal of hole array sun sensor
  • Method and device for processing signal of hole array sun sensor

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[0051] How the sun sensor works figure 1 Shown: Sunlight passes through the array of small holes in the optical mask and transmits to the image sensor to form a light spot. The incident angle of the sun's rays is different, and the position of the spot is different. The signal processing device measures and calculates the incident angle of the sun according to the position of the light spot, thereby determining the attitude of the satellite.

[0052] The functional block diagram of the solar sensor is shown in figure 2 As shown, the dotted line frame in the figure is the signal processing device of the present invention, and the working process of the sun sensor is: the image acquisition module outputs each pixel coordinate and the gray value of the light spot array image; the light spot centroid calculation module distinguishes each image according to these values spot, and calculate the centroid coordinates of each spot and store them in the centroid row / column coordinate...

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Abstract

A method for processing signal of solar sensor in array pinhole type includes using center-of mass coordinate storage to fetch a line of light spot, making deletion judgment on said line of light spot and carrying out serial number identification on line light spot without deletion, selecting calibration parameter according to said serial number, calculating attitude angle of identified light spot by attitude calculation module and obtaining final attitude angle by carrying out accumulating and averaging on attitude angle of each light spot. The device applying said method is also disclosed.

Description

technical field [0001] The invention relates to a signal processing method and device of a sun sensor, in particular to a signal processing method and device of an array pinhole solar sensor. Background technique [0002] The sun sensor is an attitude sensor that measures the angle between a certain body axis or coordinate plane of a spacecraft such as a satellite and the line of sight of the sun with the sun as the reference orientation. It has a wide application prospect in the attitude measurement and control of spacecraft such as satellites . The new complementary metal oxide semiconductor memory (CMOS, Complementary Metal Oxide Semiconductor) solar sensor mainly includes: an optical system with a single hole or an array of small holes for light transmission, based on a field programmable gate array (FPGA, Field ProgrammableGate Array) or advanced Electronic system and processing computer of ARM (Advanced RISC Machines). Its working principle is: the sunlight passes th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/30G01C21/02
CPCG01J1/42G01J2001/4266G01J1/04G01C21/02G01J1/0437G01S3/7862G01S3/784
Inventor 张广军江洁樊巧云
Owner BEIHANG UNIV
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