Broadcasting authentication method based on foundation enhancement difference network

Abstract

The invention provides a broadcasting authentication method based on a foundation enhancement difference network. The method is characterized in that a user terminal sends information to a data center so as to carry out authentication request and the data center determines the user terminal and validity of the information sent by the user terminal; the data center establishes a link with the user terminal passing the authentication, monitors an online state in real time, broadcasts precision positioning correction information at regular time according to a service authority of the user terminal and the position of the user terminal through a difference network and pushes integration position service information; after receiving service information, the user terminal extracts the precision positioning correction information, the integration position service information and user-defined information, sends confirmation information to the data center and notifies the data center of a receiving service state. A user identification capability is high, authentication time is short and an authentication rate is high. An integration position service is broadcasted and identified through the difference network, an existing network resource is fully used, and a service content and a service capability of the foundation enhancement system are enriched.

Description

technical field [0001] The invention relates to a broadcast authentication method based on a ground-based enhanced differential network, in particular to a broadcast authentication method based on a ground-based enhanced differential network suitable for the field of satellite navigation systems. Background technique [0002] In order to improve the navigation performance of the satellite navigation system, especially to improve the integrity of the satellite navigation, to meet the requirements for position information and positioning accuracy in different fields, on the basis of the independent operation of the satellite navigation system, the Global Navigation Satellite System (GNSS) enhancement The system defines three types of regional augmentation systems to enhance satellite navigation performance, including Airborne Augmentation System (ABAS), Satellite-Based Augmentation System (SBAS) and Ground-Based Augmentation System (GBAS). [0003] The ground-based augmentatio...

AI Technical Summary

Problems solved by technology

[0006] (1) In the existing technical solutions, the traditional ground-based augmentation system broadcasts the certified data content through the differential network is not full, and the network utilization rate is low

[0007] (2) In the existing technical solutions, the ground-based augmentation system only provides high-precision positioning information after calculation. With the proposal of the concept of location-based services, the data center of the ground-based augmentation system not only needs to provide users with high-precision positioning information , a large amount of comprehensive location service information, and a large amount of location-related information needs to be obtained from user terminals to support services, and the traditional broadcast authentication mechanism has been unable to meet the requirements of providing location services in the era of big data

[0008] (3) In the existing technical solutions, the interaction between the data center and the user terminal is only the approximate location information of the terminal and the correction information calculated by the center. For the data center that provides comprehensive location services, the data information communicated under this mechanism is not enough Sufficient, it is easy to lead to a large amount of calculation in the data center, and even inaccurate comprehensive location information services provided

[0009] (4) In the existing technical solutions, the ability to identify users in the broadcast authentication mechanism is weak, and the reliability of establishing links between users and the data center is low. It takes a long time to request authentication to establish a link with the system, and even the data center refuses to communicate with the system The user establishes a connection and provides wrong service information, etc.

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