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Whole cycle fuzziness initializing method in short-base line DGPS location

A technology of whole-cycle ambiguity and initialization, applied in satellite radio beacon positioning system, positioning, radio wave measurement system, etc., can solve problems such as difficulty

Inactive Publication Date: 2006-08-02
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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Problems solved by technology

However, the above-mentioned method of exchanging antennas also has its weaknesses. The main thing is that the GPS receiver must keep continuous and uninterrupted tracking and observation of GPS satellites during the operation of exchanging antennas. The point where the other antenna originally occupied was not easy, and this move required two

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Embodiment Construction

[0067] The specific embodiments of the present invention will be described in further detail below.

[0068] The specific implementation of the present invention is divided into two parts: observation data collection operation and whole-week ambiguity estimation calculation.

[0069] The implementation of the observation data collection part is divided into three steps:

[0070] 1. By figure 1 It can be seen that the two GPS receivers 1 and 2 used for carrier phase DGPS positioning measurement are connected to their corresponding antennas 3 and 4 via cables, and the antennas 3 and 4 are placed on two points 5 and 6 respectively; Observe for 4 to 8 seconds to get t 1 Carrier Phase Double Difference Observation of Two GPS Receivers at Any Time AB pq (t 1 ), the p and q in the superscript represent the GPS satellite numbers, and the subscripts A and B represent the two observation points 5 and 6, and the distance from point 5 to point 6 is 0.7 to 1.5 meters;

[0071] 2. By figure ...

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Abstract

The present invention relates to the whole cycle fuzziness initializing method for the carrier phase in short-base line DGPS. The present invention designs the position of mobile GPS receiving antenna and the operation steps of extracting observation data as well as corresponding data processing method. The operation of the present invention is simple and practical and the corresponding data processing method can give out accurate and reliable whole cycle fuzziness estimation of carrier phase. The present invention can raise the operation efficiency in the DGPS positioning measurement.

Description

Technical field: [0001] The invention relates to carrier phase differential positioning measurement, in particular to a method for initializing carrier phase ambiguity in short baseline GPS carrier phase differential positioning measurement (DGPS). Background technique: [0002] GPS is a set of satellite navigation systems established by the United States. The GPS beacons provided by it have become a global shared resource and have played a revolutionary role in navigation and surveying. Using two GPS receivers for synchronous measurement can accurately obtain the relative coordinates between the two GPS antennas. This measurement method is called differential GPS measurement, or DGPS measurement. If one of the GPS antennas is in motion, it becomes a dynamic DGPS measurement, otherwise it is called a static DGPS measurement. The use of GPS receiver carrier phase observations for DGPS dynamic or static positioning measurement can achieve high accuracy, in a short baseline (that is...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/06G01S19/44
Inventor 袁洪宁百齐万卫星
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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