Star sensor with target detecting function

A star sensor and target detection technology, applied in the field of star sensors, can solve the problems of single function, large navigation star library, small navigation star library, etc., and achieve the effects of star library shrinkage, matching time reduction, and weight reduction

Inactive Publication Date: 2014-09-10
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0006] In order to solve the above-mentioned problems of small field of view, large aperture, large navigation star library, and single function of the traditiona...

Method used

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  • Star sensor with target detecting function
  • Star sensor with target detecting function

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] See attached figure 1 And attached image 3 In the present invention, a start command is issued by the DSP, and the command instruction is transmitted to the FPGA chip through the network port. This command command contains the start information and the integration time of the demand detector. The network port module adopts TCP / IP protocol, and under the hardware support of the present invention, the transmission rate can be as high as 50Mbps.

[0020] After the FPGA receives the start command, it generates the corresponding driving sequence and sends it to the image sensor LUPA4000 through the I / O interface of the FPGA. After the image sensor LUPA4000 receives the corresponding driving sequence, the photosensitive surface is exposed, and the sensor completes the photoelectric conversion through two steps of integration and data readout, and outputs the analo...

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Abstract

The invention discloses a star sensor with a target detecting function. The star sensor comprises an image acquisition unit and an image data processing unit, wherein the image acquisition unit comprises an optical lens with a large field of view and a small aperture, an image sensor LUPA4000, an ADC (analogue-to-digital converter) chip, a static random access memory, an FPGA (field programmable gate array) drive unit and a network access module unit, and the image data processing unit is a DSP (digital signal processor) board. According to a design idea of the large field of view and the small aperture, star map matching only requires bright stars of over level three, so that the star sensor is provided with a navigation star database smaller than that of a traditional star sensor, has the advantages of small size and light weight, and has a star-sensitive measurement function and a space target detection function.

Description

technical field [0001] The invention relates to a star sensor, in particular to a star sensor with target detection function, which is used for star sensitivity measurement of celestial navigation and space target detection with relative navigation. Background technique [0002] The star sensor is a high-precision space attitude measurement device with the star as the reference system and the starry sky as the working object. By detecting stars in different positions on the celestial sphere and performing calculations, it provides accurate spatial orientation and reference for aerospace vehicles such as satellites, intercontinental strategic missiles, and spacecraft. Its autonomous navigation capability has important application value. In recent years, with the rapid development of micro-satellite technology, star sensors have gradually developed towards the trend of large field of view, light weight, and high precision. [0003] Traditional star sensors continue to develop...

Claims

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Application Information

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IPC IPC(8): G01C21/02
CPCG01C21/02
Inventor 丁国鹏郑伟波张涛李勉洪凌丽
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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