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Carrier phase ambiguity fixing method and device, and satellite navigation receiver

A technology with fixed ambiguity and carrier phase, applied in the field of satellite navigation and positioning, can solve problems such as poor estimation of ionospheric residuals, long time required for ambiguity resolution, and poor spatial correlation of ionospheric errors

Active Publication Date: 2017-08-18
UNICORE COMM INC
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Problems solved by technology

[0005] For the ambiguity resolution under medium and long baselines, due to the poor spatial correlation of the ionospheric error, the ionospheric residual error is not easy to estimate, resulting in a long time required for ambiguity resolution, and the success rate of the solution is not high

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  • Carrier phase ambiguity fixing method and device, and satellite navigation receiver
  • Carrier phase ambiguity fixing method and device, and satellite navigation receiver
  • Carrier phase ambiguity fixing method and device, and satellite navigation receiver

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Embodiment Construction

[0066] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. 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 arbitrarily with each other.

[0067] refer to figure 1 , the embodiment of the present invention provides a carrier phase ambiguity fixing method, comprising the following steps:

[0068] Establishing an inter-satellite double-difference observation equation between receivers, the unknowns of the inter-satellite double-difference observation equation between receivers include a single-frequency ambiguity and at least one wide-lane ambiguity;

[0069] Establish the Kalman filter observation model and the Kalman filter dynamic model according to the inter-satellite double-difference observation equation be...

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Abstract

The invention discloses a carrier phase ambiguity fixing method and device, and a satellite navigation receiver. The method comprises the following steps of: establishing an inter-receiver inter-satellite double-difference observation equation, wherein the unknown quantities of the inter-receiver inter-satellite double-difference observation equation include a single-frequency ambiguity and at least one wide-lane ambiguity; establishing a Kalman filtering observation model and a Kalman filtering dynamic model according to the inter-receiver inter-satellite double-difference observation equation; obtaining and solving multi-frequency-point real-time observation data according to a kalman filtering algorithm to obtain the floating point solutions of the wide-lane ambiguity and single-frequency ambiguity; subjecting the floating point solutions of wide-lane ambiguity and the single-frequency ambiguity to ambiguity of whole cycles fixing. The method and device can eliminate the influence of an ionosphere residual error, accurately and quickly solve the ambiguity, and thus guarantee positioning accuracy and shorten observation time.

Description

technical field [0001] The invention relates to the technical field of satellite navigation and positioning, in particular to a carrier phase ambiguity fixing method and device, and a satellite navigation receiver. Background technique [0002] Currently, the global satellite navigation and positioning system (GNSS) is composed of GPS in the United States, GLONASS in Russia, BeiDou in China, and Galileo in the European Union. According to the differences in technical means and modes used, satellite navigation and positioning technologies are divided into single point positioning (SPP), differential pseudorange (DGPS), precise point positioning (PPP) and carrier phase differential (RTK). The positioning accuracy ranges from low to high, and the position accuracy ranges from meters to centimeters or even millimeters. [0003] With the development of global satellite positioning technology, the demand for centimeter or even millimeter-level positioning accuracy is becoming mor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 陈孔哲王献中孙峰栾超刘亮
Owner UNICORE COMM INC
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