Space signal continuity assessment method

A continuity and signal technology, applied to satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve problems such as the lack of a clear and unified evaluation method for space signal continuity

Inactive Publication Date: 2016-11-16
CHINA AEROSPACE STANDARDIZATION INST
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Problems solved by technology

[0003] At present, the evaluation of the continuity of the satellite navigation system mainly focuses on the evaluation of the service continuity. In 2008, the United States took the lead in listing the space signal continuity as a normative index for evaluating the performance of the GPS space signal, and it has been recognized in navigation and related applications. However, there is no clear and unified evaluation method for spatial signal continuity

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] The invention provides a space signal continuity evaluation method, which provides an operable and easy-to-implement effective method for space signal continuity index evaluation by using the daily maintenance data of the navigation satellite system, the downlink signal monitoring data and the basic theory of reliability.

[0027] The present invention firstly obtains the interruption data of the daily operation of the system and the continuous health word information measured by the receiver, and according to the analysis of the planned interruption situation in the daily operation, obtains the operation status sequence and the measured health word sequence under the influence of only the unplanned interruption, respectively, according to the theoretical prediction The continuity risk of the two data sources is obtained by using the estimation metho...

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Abstract

The invention discloses a space signal continuity assessment method. With application of the space signal continuity assessment method, an operable and easily implemented effective method is provided for space signal continuity index assessment by utilizing navigation satellite system daily maintenance data, downlink signal monitoring data and the reliability basic theory. According to the space signal continuity assessment method, firstly system daily operation interruption data and continuous health character information actually measured by a receiver are acquired, operation state sequences and actually measured health character sequences under the influence of only unplanned interruption are obtained according to analysis of the planned interruption situation of daily operation, the continuity risk of two data sources is obtained according to the theory forecast method and the actual measurement evaluation method, the continuity risk is obtained by using the actual measurement statistical method by utilizing the operation state sequences under the influence of unplanned interruption, and finally the three risk calculation results are compared so that the space signal continuity is assessed.

Description

technical field [0001] The invention relates to the technical field of reliability and safety of navigation systems, in particular to a space signal continuity evaluation method. Background technique [0002] After the satellite navigation system is completed, the system faces tasks such as providing public service performance commitments for users and maintaining necessary performance indicators. In addition to accuracy indicators, the necessary performance indicators required by users such as international civil aviation and maritime affairs also include integrity, continuity and availability. [0003] At present, the assessment of the continuity of the satellite navigation system mainly focuses on the assessment of the service continuity. In 2008, the United States took the lead in listing the space signal continuity as a normative indicator for evaluating the performance of the GPS space signal, and it has been recognized in navigation and related applications. However,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/20
CPCG01S19/20
Inventor 龚佩佩郑恒李海生周波杨卓鹏王景夫
Owner CHINA AEROSPACE STANDARDIZATION INST
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