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High-precision aircraft position positioning method based on multi-constellation network post-differential

A positioning method and aircraft technology, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve poor data quality, inability to obtain multi-frequency, multi-constellation positioning performance improvement, and airborne terminals that cannot support Beidou satellites System and other problems, to achieve fast and reliable measurement results

Active Publication Date: 2020-02-04
中国民用航空中南地区空中交通管理局
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Problems solved by technology

At the same time, the signal quality of Beidou satellites is much better than that of GPS satellites (green means good data quality, yellow means poor data quality)
[0022] Technical issues: At present, the airborne GNSS terminal of the aircraft is still using GPS L1 single-frequency signal pseudo-range observation data to obtain a single-point positioning accuracy of about 10 meters, and the airborne terminal cannot support the Beidou satellite system, and cannot obtain multi-frequency and multi-constellation Performance improvements from positioning

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  • High-precision aircraft position positioning method based on multi-constellation network post-differential
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  • High-precision aircraft position positioning method based on multi-constellation network post-differential

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Embodiment Construction

[0046] In the following, the present invention will be further described with reference to the drawings and specific embodiments.

[0047] Part I: Invention Concept

[0048] In the conception of the present invention, in addition to the prior art described in the background art related to the present invention, the following key technologies are also used.

[0049] NRTK-PPK Technology

[0050] PPK (Post Processed Kinematic) technology, that is, post-process precision differential technology, is a GNSS positioning technology that uses carrier phase for post-process differential. NRTK (Network Real Time Kinematic) technology, that is, network RTK technology, provides RTK services by using a network composed of a series of continuously running reference stations. NRTK-PPK technology uses a satellite receiver for synchronous observation and a group of ground-based augmentation station receivers to store and store the carrier phase observations of the satellite, and then use ...

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Abstract

The invention discloses a high-precision aircraft position positioning method based on multi-constellation network post-differential. The space-time position of an aircraft is calculated through a multi-constellation network satellite positioning system, and the multi-constellation network satellite positioning system comprises GNSS receiving equipment, a ground-based augmentation station networkand a data calculation center. The high-precision aircraft position positioning method based on the multi-constellation network post-differential comprises the following steps of S101, terminal data collection; S102, VRS data generation; S103, ephemeris data collection; S104, data importing; S105, data monitoring; and S106, combination calculation. Combination calculation in the step S106 comprises the following sub-steps of S106a, whole-cycle ambiguity floating-point solution calculation; S106b, whole-cycle ambiguity fixed-solution calculation; S106c, preliminary positioning calculation; andS106d, accurate positioning calculation. The technical effect of decimeter-level positioning precision is achieved.

Description

technical field [0001] The present invention relates to the technical field of satellite radio beacon positioning systems transmitting information with time stamps and determining positions using signals transmitted by such systems (G01S 19 / 42); in particular, the present invention relates to the post-difference of aircraft positions based on multi-constellation networks Precision positioning method. Background technique [0002] 1. Global Navigation Satellite System [0003] At present, there are four global navigation satellite systems (Global Navigation Satellite System, GNSS), respectively: American GPS, Russian GLONASS, China's Beidou system, and the European Union's Galileo system. [0004] 2. Beidou system [0005] In 2012, the number of Beidou system satellites launched reached 16, forming a constellation of 14 working satellites including five GEOs, five IGSOs and four MEOs, and building a Beidou regional system covering the Asia-Pacific region; by 2020, five stat...

Claims

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Application Information

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IPC IPC(8): G01S19/41
CPCG01S19/41
Inventor 王明甲陆永东
Owner 中国民用航空中南地区空中交通管理局
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