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On orbit calibration method, processor and storage medium for pulsar detector pointing error

A technology of pointing error and calibration method, which is applied in the field of spacecraft control, can solve the problems of low detection efficiency and achieve high calibration accuracy

Active Publication Date: 2018-05-11
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0006] The invention provides a method for on-orbit calibration of pointing errors of pulsar detectors, a processor and a storage medium to solve the technical problem of low detection efficiency caused by inability to calibrate the pointing errors of pulsar detectors on-orbit

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  • On orbit calibration method, processor and storage medium for pulsar detector pointing error
  • On orbit calibration method, processor and storage medium for pulsar detector pointing error
  • On orbit calibration method, processor and storage medium for pulsar detector pointing error

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[0043] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0044] A preferred embodiment of the present invention provides a method for on-orbit calibration of pulsar detector pointing errors, referring to image 3 In this embodiment, the pointing error on-orbit calibration method includes:

[0045] Step S100, according to the photon flow feedback of the pulsar detector, the detector pointing is adjusted through the calibration process of coarse scan adjustment and / or fine scan adjustment, so as to realize that the pulsar detector actually points to the pulsar;

[0046] Step S200, recording the actual pointing of the satellite platform in the earth-centered inertial coordinate system, comparing it with the theoretical position of the pulsar in the earth...

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Abstract

The invention discloses an on orbit calibration method, a processor and a storage medium for pulsar detector pointing error. The method comprises the steps that according to a calibration process of the pointing of the detector fed back by the photon flux of the pulsar detector adjusted by coarse scanning and / or fine scanning, the pulsar detector actually pointing to a pulsar is realized; an actual pointing of a satellite platform in geocentric inertial coordinate system is recorded and compared with a theoretical position of the pulsar in the geocentric inertial coordinate system, the pointing error between the optical axis of the pulsar detector and the satellite platform is solved. The pointing error provides a basis for automatic compensation of a next detection process, and the calibration method is completed on the satellite platform independently, ground intervention is not needed, and compared with ground calibration, the calibration method takes into account the effects of mechanics of the launching section and on orbit thermal shock, so that the calibration precision is high.

Description

technical field [0001] The invention relates to the field of spacecraft control, in particular to a method for on-orbit calibration of pointing errors of pulsar detectors, a processor and a storage medium. Background technique [0002] A pulsar is a rapidly rotating, strongly magnetized neutron star that enables detectors to receive periodic pulses. The pulsar X-ray detector measures the X-ray single-photon signal radiated by the pulsar, and accurately records the arrival time information of the signal. In a limited period of time, according to the detected data, it reproduces the high-precision phase ( time) resolved pulsar X-ray profile, phase comparison is carried out between the measured profile and the pulsar standard profile provided by the star catalog, and then combined with algorithms such as whole-period defuzzification, the time (Time Of Arrival, TOA), and through multi-pulsar positioning or single-pulsar orbit determination, autonomous navigation of spacecraft i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 绳涛庹洲慧赵勇何亮杨磊陈利虎白玉铸宋新
Owner NAT UNIV OF DEFENSE TECH
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