Calibration system and calibration method for an infrared horizon
A technology of an infrared horizon and a calibration method, which is applied in the field of infrared horizon calibration systems, can solve the problems that the dynamic infrared horizon cannot meet its requirements, the measurement accuracy is low, and the power consumption is high, and achieves high speed, low error rate, and high efficiency. high effect
Active Publication Date: 2018-09-25
SHANGHAI AEROSPACE CONTROL TECH INST
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According to the working method, the infrared horizon can be divided into dynamic infrared horizon and static infrared horizon. The conical scanning dynamic infrared horizon is one of the dynamic infrared horizons. The instrument contains a mechanical scanning device, so the volume is relatively large, the power consumption is also high, and the measurement accuracy is low.
[0003] In the early 1990s, with the development of small satellite technology, the requirements for infrared horizons were increasing, and infrared horizons gradually developed in the direction of modularization, miniaturization, and high precision. Dynamic infrared horizons have been unable to meet their requirements.
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[0053] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.
[0054] Such as figure 1 As shown, a calibration system of an infrared horizon is used for ground calibration of an infrared horizon 100 to be calibrated. The calibration system includes: an optical platform 200; and a collimating light pipe 300, a two-dimensional Turntable 400; Earth Simulator 500; Described infrared horizon 100 to be calibrated is arranged on the two-dimensional turntable 400; Also comprises the test computer 600 connected with described two-dimensional turntable 400 and infrared horizon 100 to be calibrated respectively; Wherein, The optical platform 200 ensures that the entire calibration system is in a horizontal position, the collimator light pipe 300 ensures that the incident light is parallel light, and the earth simulator 500 is used to simulate the infrared light radiated from the earth....
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The invention discloses an infrared horizon sensor calibration method which comprises the following steps: S1, mounting an infrared horizon sensor to be calibrated on a two-dimensional rotation platform of an infrared horizon sensor calibration system, and initializing the infrared horizon sensor calibration system; S2, selecting a data acquisition mode, generating a corresponding calibration point according to the selected data acquisition mode, controlling the two-dimensional rotation platform to reach a corresponding position, and acquiring attitude information of the infrared horizon sensor to be calibrated at the moment; S3, calculating calibration parameters according to data of the calibration point and the attitude information of the infrared horizon sensor to be calibrated; calculating accuracy of the calibration, if the accuracy meets a preset accuracy requirement, completing the calibration of the infrared horizon sensor to be calibrated; or else, returning to S2 and re-sampling. The invention further discloses the infrared horizon sensor calibration system. The infrared horizon sensor calibration system and method provided by the invention calibrate and correct main error terms in the infrared horizon sensor, and improve the accuracy of the infrared horizon sensor.
Description
technical field [0001] The invention relates to the field of spacecraft navigation, guidance and control, in particular to a calibration system and a calibration method for an infrared horizon. Background technique [0002] As an attitude sensor that was first used in the aerospace field, the infrared horizon has always been an important part of various satellite attitude and orbit control systems. According to the working method, the infrared horizon can be divided into dynamic infrared horizon and static infrared horizon. The conical scanning dynamic infrared horizon is one of the dynamic infrared horizons. The instrument contains a mechanical scanning device, so the volume is relatively large, the power consumption is also high, and the measurement accuracy is low. [0003] In the early 1990s, with the development of small satellite technology, the requirements for infrared horizons were increasing, and infrared horizons were gradually developing towards modularization, ...
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IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 伍玲玲窦伟庞欢王志
Owner SHANGHAI AEROSPACE CONTROL TECH INST