A system and method for measuring pulsar angular position based on a dual-satellite platform

A satellite platform and measurement system technology, which is applied in the directions of measurement devices, measurement angles, surveying and navigation, etc., can solve the problems of lack of high-precision autonomous navigation of pulsars, limit the resolution of telescopes, etc., and improve accuracy and measurement accuracy Effect

Inactive Publication Date: 2016-02-17
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology

[0002] The pulsar angular position error is the main source of the pulsar navigation timing residual. The existing measurement of the pulsar angular position is to set up a radio telescope on the ground and measure the angular position of the pulsar through the ground radio observation network. Due to the The resolution is inversely proportional to the wavelength. The wavelength of the radio frequency band limits the resolution of the telescope. Its accuracy is only 10mas, which is far below the 0.1mas requirement for high-precision autonomous navigation of pulsars.

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  • A system and method for measuring pulsar angular position based on a dual-satellite platform
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[0030] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] The invention provides a pulsar angular position measurement scheme based on a dual-satellite platform, using two satellite platforms (such as figure 2 ), using two satellites to fly in co-orbit formation to form a relative motion around each other; respectively detect the X-ray signals radiated by the same pulsar, and mark the detected pulsar X-ray radiation photons with time stamps to obtain the photon arrival The time series information is combined with the obtained absolute position information of the satellite platform and the inter-satellite link information to correct the optical path difference, and the angular position information of the pulsar is obtained by performing cross-correlation processing on the obtained photon arrival time series information

[0032] Such as figure 1 As shown, a pulsar angular position measurement system based ...

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Abstract

The invention provides a pulsar angular position measurement system and a method based on double satellite platforms. In outer space, two satellites running on a common rail are utilized to observe a pulsar X-ray radiation signal simultaneously. A cross-correlation processing technology is employed to determine the angular position of the pulsar, and the measurement accuracy of the pulsar angular position is improved, thereby satisfying the application requirements of high-precision autonomous navigation based on X-ray pulsar.

Description

technical field [0001] The invention belongs to the technical field of spacecraft autonomous navigation, and in particular relates to a system and method for measuring pulsar angular positions based on a dual-satellite platform. Background technique [0002] The pulsar angular position error is the main source of the pulsar navigation timing residual. The existing measurement of the pulsar angular position is to set up a radio telescope on the ground and measure the angular position of the pulsar through the ground radio observation network. Due to the The resolution is inversely proportional to the wavelength. The wavelength of the radio frequency band limits the resolution of the telescope, and its accuracy is only 10mas, which is far below the 0.1mas requirement for high-precision autonomous navigation of pulsars. Contents of the invention [0003] In view of this, the present invention provides a system and method for measuring the angular position of a pulsar based on...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/02G01C1/00
CPCG01C1/00G01C21/24
Inventor 贝晓敏吴耀军黄良伟张倩陈强陈绍龙帅平
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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