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Multi-path differential multi-mode satellite navigation and positioning method and device

A multi-mode satellite, navigation and positioning technology, applied in the field of GNSS communication, can solve the problem of expensive positioning system, and achieve the effect of solving the loss of signal lock, reducing investment and improving accuracy

Pending Publication Date: 2018-04-24
SOUTH CHINA AGRI UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0009] In addition, the output frequency of positioning data is one of the cost-influencing factors of existing RTK-GNSS systems, and RTK-GNSS positioning systems with high output frequencies are usually more expensive

Method used

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  • Multi-path differential multi-mode satellite navigation and positioning method and device
  • Multi-path differential multi-mode satellite navigation and positioning method and device
  • Multi-path differential multi-mode satellite navigation and positioning method and device

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Embodiment

[0093] Such as Figure 1 ~ Figure 4 As shown, a multi-channel differential multi-mode satellite navigation positioning method is characterized in that it comprises the following steps:

[0094] S1. The base station sends the differential information to the host communication verification terminal;

[0095] S2. The master communication verification terminal receives the difference information sent by the reference station, generates a verification code, and sends the difference information and verification code to several slave communication verification terminals;

[0096] S3. The slave communication verification terminal receives the differential information and verification code sent by the master communication verification terminal, performs the integrity verification of the differential information to obtain a verification result, and sends the verification result to several mobile stations;

[0097] S4. The mobile station decides whether to send confirmation information ...

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Abstract

The invention discloses a multi-path differential multi-mode satellite navigation and positioning method and device. After a host communication verification terminal receives differential informationsent by a reference station and generates a verification code, the differential information and the verification code are sent to a slave machine communication verification terminal, the slave machinecommunication verification terminal performs integrity verification on the difference information according to the received differential information and the verification code, a mobile station determines whether to send confirmation information to the host communication verification terminal according to a received verification result, the host communication verification terminal maintains a current communication mode or switches a communication mode according to a condition that whether the confirmation information is received or not, and finally the mobile station calculates positioning information and sends the positioning information to the reference station. The communication mode is determined by verifying the integrity of the difference information in advance, the no data leakage of the differential information is ensured, the positioning accuracy is improved, and the method and the device are suitable for multi-path differential multi-mode satellite navigation and positioning.

Description

technical field [0001] The invention relates to the technical field of GNSS communication, in particular to a multi-channel differential multi-mode satellite navigation and positioning method and device. Background technique [0002] Carrier phase observations must be used for high-precision GNSS measurement. RTK (Real-Time Kinematic) positioning technology is a real-time dynamic positioning technology based on carrier phase observations. It can provide real-time three-dimensional positioning results of the station in the specified coordinate system. And achieve centimeter level accuracy. In the RTK operation mode, the base station transmits its observation value and station coordinate information to the rover through the data link. However, the biggest problem encountered in the application of RTK technology is that the effective range is limited by the differential communication link. The spatial correlation of GNSS errors gradually loses linearity with the increase of t...

Claims

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Application Information

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IPC IPC(8): G01S19/47H04B7/185H04W12/10H04W88/06H04W12/106
CPCH04B7/18547H04W12/10H04W88/06G01S19/428G01S19/47Y02D30/70
Inventor 周志艳姜锐徐岩汪沛臧英罗锡文孔令熙
Owner SOUTH CHINA AGRI UNIV
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