Satellite navigation high-precision relative positioning method based on ranging information assistance

A satellite navigation and relative positioning technology, which is applied in the field of satellite navigation relative positioning, can solve problems such as increased computation, complex algorithm implementation, and complex models, and achieve the effects of small computing resources, simple algorithm model, and increased computation
CN112987068APending Publication Date: 2021-06-18NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
Publication Date
2021-06-18

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Abstract

The invention provides a satellite navigation high-precision relative positioning method based on ranging information assistance. The method comprises the following steps of selecting a primary satellite, establishing a satellite navigation double-difference observation equation, acquiring ranging information, establishing a ranging information observation equation, solving a baseline vector after an ambiguity floating solution and a fixed solution and completing satellite navigation relative solution. According to the method, the ranging information is introduced, strong constraint information of the distance between the base station and the mobile station is provided for satellite navigation relative positioning, and the reliability of satellite navigation relative positioning can still be guaranteed by using the information when the number of satellites is insufficient or the geometric configuration is poor. The method provided by the invention is simple in algorithm model, has no obvious increase in operand compared with the original algorithm, and occupies less operation resources. A ranging information error model is simple, complex modeling is not needed, and implementation is easy.
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Description

technical field

[0001] The invention relates to the field of satellite navigation relative positioning, and relates to a satellite navigation high-precision relative positioning method assisted by ranging information in a satellite navigation relative positioning system. Background technique

[0002] In surveying and mapping, precision agriculture and other high-precision relative positioning applications, relative positioning based on satellite navigation pseudo-range observations has low precision and cannot meet its high-precision positioning requirements, so it must rely on real-time dynamic relative positioning technology based on satellite navigation carrier phase . In the real-time dynamic relative positioning technology based on satellite navigation carrier phase, the mobile station uses the satellite navigation observation information provided by the reference station and combines its own observation information to perform double difference calculation. At the same...

Claims

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