CN109150818B - Design of differential grid data fusion service component in distributed CORS system - Google Patents
Design of differential grid data fusion service component in distributed CORS system Download PDFInfo
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- CN109150818B CN109150818B CN201711425023.7A CN201711425023A CN109150818B CN 109150818 B CN109150818 B CN 109150818B CN 201711425023 A CN201711425023 A CN 201711425023A CN 109150818 B CN109150818 B CN 109150818B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0281—Proxies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/562—Brokering proxy services
Abstract
The invention provides a differential grid data fusion service component design in a distributed CORS system, which comprises the following steps of; the public network access module comprises a national one-network base station, an industry/regional network base station and a plurality of CORS server platforms; the security-related network access module comprises a CORS proxy server, a CORS server B, a self-building/moving base station and a Beidou terminal, wherein the CORS proxy server is respectively connected with the CORS server B, the self-building/moving base station and the Beidou terminal; the national one-network base station is connected with one CORS server platform, and the industry/regional network base station is connected with the other CORS server platform; the public network access module and the secret-involved network access module are connected through a network bridge, fusion of differential information of distributed differential service is achieved, isolation of sensitive position information is achieved according to special requirements of the secret-involved network on Beidou accurate space-time service, and safety of position data is effectively protected.
Description
Technical Field
The invention relates to the field of Beidou accurate space-time service, in particular to a differential grid data fusion service component design in a distributed CORS system.
Background
The CORS system consists of a plurality of reference stations, a system center and communication links connecting the reference stations and the system center, wherein observation data collected by the reference stations are collected to the system center through the communication links, and the system center performs comprehensive processing to provide space position information services such as mobile positioning, dynamic continuous space frames and the like for users. The traditional CORS system directly provides space position service for clients, rarely pays attention to the safety of the space-time position data, lacks effective guarantee for user position information, and has potential safety hazards of leaking high-confidentiality space-time position data particularly in the field with higher requirements for space-time position data confidentiality in military and special industries. The safety of accurate space-time information is an important component of national confidential work, and the existing accurate space-time information service mainly can not effectively meet the requirement of a confidential network on the accurate space-time service in a public network environment.
Disclosure of Invention
In order to overcome the defects, the invention provides the design of a differential grid data fusion service component in the distributed CORS system, realizes the fusion of differential information of distributed differential service, realizes the isolation of sensitive position information according to the special requirement of a secret-involved network on Beidou accurate space-time service, and effectively protects the safety of position data.
The invention provides a differential grid data fusion service component design in a distributed CORS system, which comprises the following steps of;
the public network access module comprises a national one-network base station, an industry/regional network base station and a plurality of CORS server platforms;
the security-related network access module comprises a CORS proxy server, a CORS server B, a self-building/moving base station and a Beidou terminal, wherein the CORS proxy server is respectively connected with the CORS server B, the self-building/moving base station and the Beidou terminal;
the national one-network base station is connected with one CORS server platform, and the industry/regional network base station is connected with the other CORS server platform;
and the public network access module is connected with the secret-related network access module through a network bridge.
In the above design, one of the CORS server platforms is connected to the national ground enhancement station network through the public network access module, collects data of the ground enhancement station in one network of the country, and issues differential data to the outside through the Ntrip protocol technology.
In the above design, the CORS server B is connected to the self-built foundation enhancement station network or the mobile foundation enhancement station network through the secret-related network access module, collects data of the foundation enhancement station in the secret-related network access module, and issues differential data to the outside through an Ntrip protocol or a Web Service technology.
In the design, the CORS proxy server provides distributed CORS area Beidou accurate space-time Service capability by constructing the differential grids of the areas in different servers, meanwhile, the differential information of the adjacent nodes in the differential grids of the areas is updated in time according to the request of the terminal, and the complete and timely differential information is provided for the terminal through an Ntrip protocol or a Web Service technology.
In the design, the Beidou terminal pushes the Beidou satellite positioning rough position information to the CORS proxy server through the Web Service technology, receives the differential data and realizes the sub-meter positioning of the current position through the high-precision positioning algorithm of the Beidou terminal.
In the design, the CORS proxy server includes a grid data Service and a grid data display Service, where the grid data Service provides data acquisition, data decoding, data verification, data storage, grid point update, grid isolation, and just-in-time synchronization functions, and the grid data display Service provides grid point display based on the map presentation layer through a Web Service.
The invention has the following advantages: 1. in a CORS proxy server, according to special requirements of a secret-involved network on Beidou precise space-time service, a position difference grid of a sensitive area is constructed to isolate the sensitive area from a public area on a software level, and the control capability of the sensitive area on the Beidou precise space-time service is realized; 2. the obtained differential information of the national one-network ground base enhancement station, the industry/regional network ground base enhancement station and the self-built ground base enhancement station is issued to a CORS proxy server through a network bridge, the received differential information is filtered by using a filtering service module, different types of differential data are decoded by a decoding service module and stored in corresponding differential grid points, and therefore fusion service of different source differential information is achieved.
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The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a block diagram of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
Referring to fig. 1, the present invention provides a differential grid data fusion service component design in a distributed CORS system, including the following steps:
public network access module, public network access module includes one net of state basic station, trade/regional area network basic station and a plurality of CORS server platform, for example: referring to fig. 1, a plurality of CORS server platforms in the invention are described by taking a CORS server a1 and a CORS server An as examples;
the security-related network access module comprises a CORS proxy server, a CORS server B, a self-building/moving base station and a Beidou terminal, wherein the CORS proxy server is respectively connected with the CORS server B, the self-building/moving base station and the Beidou terminal;
the national one-network base station is connected with one of the CORS server platforms (CORS server A1), and the industry/regional network base station is connected with the other CORS server platform (CORS server An);
and the public network access module is connected with the secret-related network access module through a network bridge.
Referring to fig. 1, the present invention isolates sensitive location information by constructing an isolated differential grid. The safety of the Beidou accurate space-time service in the sensitive area is ensured; and a loosely-coupled universal distributed server framework is provided, so that the flexibility, portability and expandability of the framework are greatly improved.
In a preferred but non-limiting embodiment of the present invention, the CORS server a1 is connected to the national ground based augmentation station network through a public network access module, collects data in one network of the national ground based augmentation station, and issues differential data to the outside through an Ntrip protocol technology.
In a preferred but non-limiting embodiment of the present invention, the CORS server B is connected to a self-built ground-based augmentation station network or a mobile ground-based augmentation station network through a secret-related network access module, collects data of a ground-based augmentation station in the secret-related network access module, and issues differential data to the outside through an Ntrip protocol or a Web Service technology.
In a preferred but non-limiting embodiment of the invention, a CORS proxy server provides distributed CORS area Beidou accurate space-time Service capability by constructing differential grids of the areas in different servers, and simultaneously timely updates differential information of adjacent nodes in the differential grids of the areas according to a request of a terminal, wherein the timely update is update within 14 seconds after effective data is created, then complete and timely differential information is provided for the terminal through an Ntrip protocol or a Web Service technology, and in the CORS proxy server, according to special requirements of a secret-involved network on the Beidou accurate space-time Service, a position differential grid of a sensitive area is constructed to realize software level isolation of the sensitive area and a public area, so that the control capability of sensitive area high-accuracy Beidou space-time Service is realized.
In a preferred but non-limiting embodiment of the invention, the Beidou terminal pushes Beidou satellite positioning rough position information to the CORS proxy server through a Web Service technology, receives returned differential data, and realizes sub-meter positioning of the current position through a high-precision positioning algorithm of the Beidou terminal.
In a preferred but non-limiting embodiment of the present invention, the CORS proxy server is a Windows Service server, preferably, the Windows Service server includes a grid data Service and a grid data presentation Service, wherein the grid data Service provides data acquisition, data decoding, data verification, data storage, grid lattice point update, grid isolation, just-in-time synchronization functions, and the grid data presentation Service provides grid lattice point presentation based on a map presentation layer through the Web Service. And the client and the CORS server transmit differential data through an Ntrip protocol based on the proxy server to complete the function of differential data broadcasting.
The invention also includes:
and (3) fusion of differential information:
the method comprises the steps of obtaining differential information of a national one-network ground base enhancement station, an industry/region network ground base enhancement station and a self-built foundation enhancement station through a public network by using an Ntrip protocol, issuing the information to a CORS proxy server through a network bridge, filtering the received differential information through an RTCM information filtering service at a server end, decoding different TYPEs of differential data through an RTCM information decoding service, cleaning the decoded data according to different TYPE TYPEs of the RTCM protocol, and storing the data into corresponding homomorphic differential grid points, thereby realizing fusion service of the differential information of different sources.
Sensitive position information isolation:
in a CORS proxy server, according to special requirements of the secret-involved network on Beidou accurate space-time service, a position difference grid of a sensitive area is constructed through secret-involved grid service, and the control capability of the sensitive area high-accuracy Beidou space-time service is realized. The secret-related grid service is concentrated on the sensitive area differential information service, the sensitive area and the public area are isolated on a software level by the aid of the secret-related grid service, hardware level isolation is achieved through an encryption network, safety of accurate space-time service of the sensitive area is greatly enhanced, differential data provided by the secret-related grid service in the area are published through the encryption network, a Beidou terminal with connection encryption network authorization can receive the differential data through a corresponding network protocol, high-precision positioning is achieved, and other Beidou terminals which are not authorized to be connected with the encryption network cannot use the accurate space-time service of the area.
Referring to fig. 1, a data source is specified and disclosed by a CORS provider, and the CORS provider provides satellite observation data (including services such as coordinates, earth dynamic parameters, satellite orbit and the like, and can also provide spatial information services such as mobile positioning, time-space reference and the like for a user)
The CORS reference station interface settings are provided below, as shown in Table 1
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (5)
1. The method for designing the differential grid data fusion service component in the distributed CORS system is characterized by comprising the following steps of;
the public network access module comprises a national one-network base station, an industry/regional network base station and a plurality of CORS server platforms;
the security-related network access module comprises a CORS proxy server, a CORS server B, a self-building/moving base station and a Beidou terminal, wherein the CORS proxy server is respectively connected with the CORS server B and the Beidou terminal, and the CORS server B is connected with the self-building/moving base station;
the national one-network base station is connected with one CORS server platform, and the industry/regional network base station is connected with the other CORS server platform;
the public network access module is connected with the secret-involved network access module through a network bridge, a CORS server platform is connected with a national foundation enhancement station network through the public network access module, data of a foundation enhancement station in one network of the country are collected, differential data are issued to the outside through an Ntrip protocol technology, differential information of the national foundation enhancement station in one network, an industry/regional network foundation enhancement station and a self-built foundation enhancement station is obtained through a public network by using an Ntrip protocol, the CORS proxy server provides distributed CORS regional Beidou accurate space-time Service capability through constructing a regional differential grid in different servers, meanwhile, differential information of adjacent nodes in the regional differential grid is updated in time according to a request of a terminal, and complete and timely differential information is provided for the terminal through the Ntrip protocol or Web Service technology.
2. The design method of the differential grid data fusion Service component in the distributed CORS system according to claim 1, wherein the CORS server B is connected with a self-built foundation enhancement station network or a mobile foundation enhancement station network through a secret-involved network access module, collects data of the foundation enhancement station in the secret-involved network access module, and externally releases differential data through an Ntrip protocol or a Web Service technology.
3. The method for designing the differential grid data fusion Service component in the distributed CORS system as claimed in claim 2, wherein the Beidou terminal pushes Beidou satellite positioning rough position information to the CORS proxy server through a Web Service technology, receives differential data, and realizes sub-meter positioning of the current position through a high-precision positioning algorithm of the Beidou terminal.
4. The method of claim 3, wherein the CORS proxy server is a Windows Service server.
5. The method as claimed in claim 4, wherein the Windows Service server includes a grid data Service and a grid data presentation Service, wherein the grid data Service provides data collection, data decoding, data verification, data storage, grid lattice point update, grid isolation, just-in-time synchronization functions, and the grid data presentation Service provides grid lattice point presentation based on a map presentation layer through a Web Service.
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| CN111131511A (en) * | 2019-12-31 | 2020-05-08 | 湖南省测绘科技研究所 | CORS cross-platform cooperative service method and system |
| CN113225360B (en) * | 2020-01-21 | 2023-04-18 | 中移(上海)信息通信科技有限公司 | User terminal positioning method, device and system |
| CN111489094B (en) * | 2020-04-15 | 2024-01-23 | 云南电网有限责任公司曲靖供电局 | Beidou power grid safety production management method and system |
| CN115685289A (en) * | 2022-12-30 | 2023-02-03 | 北京度位科技有限公司 | Method and system for network differential data service of distributed reference station and electronic equipment |
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| CN106646570A (en) * | 2017-01-12 | 2017-05-10 | 付寅飞 | Multi-base-station satellite differential positioning and inertia combination vehicle precise positioning method |
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