CN108226956A - A kind of differential data protection processing method and its system - Google Patents
A kind of differential data protection processing method and its system Download PDFInfo
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- CN108226956A CN108226956A CN201611196821.2A CN201611196821A CN108226956A CN 108226956 A CN108226956 A CN 108226956A CN 201611196821 A CN201611196821 A CN 201611196821A CN 108226956 A CN108226956 A CN 108226956A
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- differential data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/07—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections
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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
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
Abstract
The invention discloses a kind of differential data protection processing method and its systems.The method comprising the steps of：After server end receives user terminal solicited message, dynamic generation error range is more than the error of predetermined threshold, as coordinate shift amount dRu；Server end is sent to user terminal, and preserve the correspondence of the dRu and the user terminal after carrying out migration processing to the benchmark station coordinates in the differential data of being broadcast according to dRu；Differential positioning result of the received server-side from user terminal, after carrying out authentication confirmation, the corresponding dRu of user terminal is inquired, and rectify a deviation to the Differential positioning result from user terminal according to the dRu inquired according to correspondence, the Differential positioning result after correction is sent to user terminal.The coordinate information that the protection processing method of the present invention is solved in the current base station field for belonging to state secret range can not be broadcast outward in real time, and the problem of be difficult to realize after broadcasting to physical standard station coordinates information privacy.
Description
Technical field
The present invention relates to communications to broadcast technical field, more particularly to a kind of differential data protection treatment technology.
Background technology
Continuous operation base station has been acknowledged as one of basic common structure of high precision position service, throughout the country
It is flourished.Currently, coming into operation with China BDS, every profession and trade start the construction application climax of a new round.Continuously
Operation base station system is the observation information using each base station, accurate error correction model is established, by sending in real time
RTCM differential correcting informations correct the observation precision of user, in a wide range of interior high accuracy positioning service for realizing mobile subscriber.
The coordinate information field of base station is included in RTCM differential datas, by the real-time decoding to differential data, benchmark can be obtained
Coordinate information in field of standing.According to《Surveying Management Work state secret catalogue》Regulation, is related to the important engineering of national economy and sets
The position coordinate that precision is better than ± 100 meters is applied, belongs to state secret range, is not allow to issue to the public.So as to cause
It such as relating to cannot be in real time by network to the public during physical standard station coordinates in existing high-precision GNSS differential data
It broadcasts, this certainly will be by the serious development and application for restricting BDS in China's every profession and trade.
Be based on more than main cause, when in the GNSS differential datas broadcast by internet channel containing physical standard station
During coordinate information, by the position coordinate that can be obtained by physical standard station to the decoding of difference text, it is difficult to realize to physics
The secrecy of base station coordinate information.
Invention content
The purpose of the present invention is to provide a kind of differential data protection processing method and its system, to solve to belong to state at present
Coordinate information in the base station field of the secret range of family can not be broadcast outward in real time, and be difficult to realize after broadcasting to physics
The problem of base station coordinate information secrecy.
In the present invention, first aspect provides a kind of differential data protection processing method, including step：
After server end receives user terminal solicited message, dynamic generation error range is more than the error of predetermined threshold, as
Coordinate shift amount dRu；
After the server end carries out migration processing according to the dRu to the benchmark station coordinates in the differential data of being broadcast
The user terminal is sent to, Differential positioning is carried out, and preserve the correspondence of the dRu and the user terminal for the user terminal；
After Differential positioning of the received server-side from the user terminal is as a result, carry out authentication confirmation, according to described
Correspondence inquires the corresponding dRu of the user terminal, and according to the dRu inquired to the Differential positioning knot from the user terminal
Fruit is rectified a deviation, and the Differential positioning result after correction is sent to the user terminal.
Second aspect of the present invention provides a kind of differential data protection processing system, including：User terminal and server end；
The server end includes：
Offset generating means, after receiving user terminal solicited message, dynamic generation error range is more than predetermined threshold
Error, as coordinate shift amount dRu；
Migration processing device, for being deviated according to the dRu to the benchmark station coordinates in the differential data of being broadcast
Processing；
First sending device, the benchmark station coordinates for migration processing to be finished is sent to the user terminal, for the user
End carries out Differential positioning；
Storage device, for preserving the correspondence of the dRu and the user terminal；
First receiving device, for receiving the Differential positioning result from the user terminal；
Inquiry unit, for inquiring the corresponding dRu of the user terminal according to the correspondence；
Deviation correcting device, for being rectified a deviation according to the dRu inquired to the Differential positioning result from the user terminal；
Second sending device, for the Differential positioning result after rectifying a deviation to be sent to the user terminal.
Compared with prior art, the main distinction and its effect are embodiment of the present invention：
Server end and it is indirect broadcast reference station true coordinate to user terminal, but the coordinate for passing through dynamic generation
Offset carries out migration processing to it, improves the safety broadcast；
According to the legitimacy of user, the Differential positioning result uploaded to user terminal carries out correction processing, and it is right that user terminal passes through
Differential positioning result after correction is decoded, and can be obtained accurate available 3 d space coordinate, dexterously be avoided benchmark
The drawbacks of station coordinates is directly broadcast, the internet DecryptDecryption for realizing high-precision difference data are broadcast；
Internet special line APN is broadcast mode by this method, extensive to broadcast mode to internet public network channel, has a variety of broadcast
Hair approach；
This method will need preset correction mode in regular redjustment and modification relay software, upgrade to random automatic encryption
Mode is not limited, it is ensured that simple and easy to use by correction numerical values recited.
Further, server end preserves the correspondence of dRu and user terminal, facilitates inquiry.
Further, migration processing device includes：Sub-device is obtained, it is poor to be obtained from the difference text to be broadcast
Base station coordinate values in divided data；DRu can be added, after obtaining offset by addition sub-device with base station coordinate values
New base station coordinate values；Sub-device is replaced, new base station coordinate values can be replaced into difference text.
Further, user terminal includes：Second reception device can receive the difference through migration processing from server end
Divided data；Differential positioning device can carry out Differential positioning according to the differential data received；Third sending device can incite somebody to action
Differential positioning result is sent to server end.
Further, offset generating means include：Generating random number sub-device, can according to user terminal solicited message,
One group of random number is generated in the range of more than predetermined threshold, as coordinate shift amount dRu.
It should be understood that within the scope of the present invention, above-mentioned each technical characteristic of the invention and have in below (eg embodiment)
It can be combined with each other between each technical characteristic of body description, so as to form new or preferred technical solution.As space is limited, exist
This is no longer repeated one by one.
Description of the drawings
Fig. 1 is the flow diagram of the differential data protection processing method in first embodiment of the invention.
Fig. 2 is the flow diagram of the differential data protection processing method in second embodiment of the invention.
Fig. 3 is the flow diagram of the differential data protection processing method in third embodiment of the invention.
Fig. 4 is the structure diagram of the differential data protection processing system in four embodiment of the invention.
Fig. 5 is the structure diagram of the differential data protection processing system in fifth embodiment of the invention.
Fig. 6 is the structure diagram of the differential data protection processing system in sixth embodiment of the invention.
Specific embodiment
In the following description, in order to make the reader understand this application better, many technical details are proposed.But this
Even if the those of ordinary skill in field is appreciated that without these technical details and many variations based on the following respective embodiments
And modification, it can also realize the application technical solution claimed.
Term
As used herein, term " GNSS " refers to Global Navigation Satellite System.
" continuous operation base station " refers to continuous operation base station system.
" BDS " refers to Beidou navigation satellite system.
" APN " is referred to the accession to a little.
" SIM " refers to subscriber identification module.
" NTRIP " refers to the RTCM Data Transport Protocols based on internet.
" RTCM " refers to Maritime Radio Technical Committee difference standard.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with implementation of the attached drawing to the present invention
Mode is described in further detail.
First embodiment of the invention is related to a kind of differential data protection processing method, and Fig. 1 is the flow signal of this method
Figure.
As shown in the figure, in a step 101, after server end receives user terminal solicited message, dynamic generation error range is big
In the error of predetermined threshold, as coordinate shift amount dRu.
Then into step 102：Server end carries out the benchmark station coordinates in the differential data of being broadcast according to dRu inclined
User terminal is sent to after shifting processing, Differential positioning is carried out, and preserve the correspondence of the dRu and the user terminal for the user terminal.
Then into step 103：After Differential positioning of the received server-side from user terminal is as a result, carry out authentication confirmation,
The corresponding dRu of user terminal is inquired according to correspondence, and according to the dRu inquired to the Differential positioning result from user terminal into
Row correction, user terminal is sent to by the Differential positioning result after correction.
Then into step 104：User terminal is based on NTRIP agreements, and the Differential positioning result after correction is decoded, is obtained
To accurate available 3 d space coordinate.
In present embodiment, limitation is not made to server end differential data processing software, those skilled in the art can
Which kind of data processing software is selected determines according to actual conditions to generate differential data, but the difference processing software of user terminal is done
Go out limitation, need to change customized development.
In present embodiment, server end and it is indirect broadcast reference station true coordinate to user terminal, but pass through
The coordinate shift amount of dynamic generation carries out migration processing to it, improves the safety broadcast；
According to the legitimacy of user, the Differential positioning result uploaded to user terminal carries out correction processing, and it is right that user terminal passes through
Differential positioning result after correction is decoded, and can be obtained accurate available 3 d space coordinate, dexterously be avoided benchmark
The drawbacks of station coordinates is directly broadcast, the internet DecryptDecryption for realizing high-precision difference data are broadcast；
Internet special line APN is broadcast mode by this method, extensive to broadcast mode to internet public network channel, has a variety of broadcast
Hair approach；
This method will need preset correction mode in regular redjustment and modification relay software, upgrade to random automatic encryption
Mode is not limited, it is ensured that simple and easy to use by correction numerical values recited.
Second embodiment of the invention is related to a kind of differential data protection processing method, and Fig. 2 is the flow signal of this method
Figure.
As shown in the figure, in step 201, after server end receives user terminal solicited message, dynamic generation error range is big
In the error of predetermined threshold, as coordinate shift amount dRu, this step is identical with step 101.
Then into step 202：Server end obtains the base station in differential data from the difference text to be broadcast
Coordinate values.
Then into step 203：DRu is added by server end with base station coordinate values, the new base after being deviated
Quasi- station coordinates numerical value.
Then into step 204：Server end replaces new base station coordinate values into difference text.
Then into step 205：Server end recompiles difference text and broadcasts, and preserves the dRu and the user terminal
Correspondence.
Then into step 206：After Differential positioning of the received server-side from user terminal is as a result, carry out authentication confirmation,
The corresponding dRu of user terminal is inquired according to correspondence, and according to the dRu inquired to the Differential positioning result from user terminal into
Row correction, is sent to user terminal, this step is identical with step 103 by the Differential positioning result after correction.
Then into step 207：User terminal is based on NTRIP agreements, and the Differential positioning result after correction is decoded, is obtained
It is identical with step 104 to accurately available 3 d space coordinate, this step.
In present embodiment, step 202, step 203, step 204 and step 205 can realize the function of step 102.
Also, server end can also subtract each other base station coordinate values with dRu, and the new base station after being deviated is sat
Mark numerical value.
In present embodiment, server end preserves the correspondence of dRu and user terminal, facilitates inquiry.
Third embodiment of the invention is related to a kind of differential data protection processing method, and Fig. 3 is the flow signal of this method
Figure.
As shown in the figure, in step 301, server end is according to user terminal solicited message, in the range more than predetermined threshold
One group of random number of interior generation, as coordinate shift amount dRu.
Then into step 302：Server end carries out the benchmark station coordinates in the differential data of being broadcast according to dRu inclined
User terminal is sent to after shifting processing, Differential positioning is carried out, and preserve the correspondence of the dRu and the user terminal for the user terminal,
This step is identical with step 102.
Then into step 303：User terminal receives the differential data through migration processing from server end, according to the difference
Divided data carries out Differential positioning, and Differential positioning result is sent to server end.
Then into step 304：After Differential positioning of the received server-side from user terminal is as a result, carry out authentication confirmation,
The corresponding dRu of user terminal is inquired according to correspondence, and according to the dRu inquired to the Differential positioning result from user terminal into
Row correction, is sent to user terminal, this step is identical with step 103 by the Differential positioning result after correction.
Then into step 305：User terminal is based on NTRIP agreements, and the Differential positioning result after correction is decoded, is obtained
It is identical with step 104 to accurately available 3 d space coordinate, this step.
In present embodiment, step 301 can realize the function of step 101, wherein, server end can be believed according to request
Customer equipment identification in breath as the seed of generating random number, generates random number.For another example, one is generated according to solicited message
HASH values modify to the random number of dynamic generation using the HASH values.
In present embodiment, the extended format based on NTRIP1.0 versions is as follows：
GET<mountpoint>HTTP/1.0<CR><LF>
User-Agent：NTRIP<X=* | Y=* | Z=*><CR><LF>
Accept：*/*<CR><LF>
Connection：close<CR><LF>
<CR><LF>
Part field meanings：
<mountpoint>：The data access point of request；
<X=* | Y=* | Z=*>：3 d space coordinate numerical value；
<CR><LF>：New line accords with
The mechanism field contents for accessing user are modified in more than form, are added in 3 d space coordinate numerical value
Hold.
Four embodiment of the invention is related to a kind of differential data protection processing system, and Fig. 4 is the structural representation of the system
Figure.
As shown in the figure, a kind of differential data protection processing system, including：User terminal 401 and server end 402.
Server end 402 includes：
Offset generating means 403, after receiving 401 solicited message of user terminal, dynamic generation error range is more than pre-
The error of thresholding is determined, as coordinate shift amount dRu；
Migration processing device 404, for being carried out at offset to the benchmark station coordinates in the differential data of being broadcast according to dRu
Reason；
First sending device 405, the benchmark station coordinates for migration processing to be finished is sent to user terminal 401, for this
Family end 401 carries out Differential positioning；
Storage device 406, for preserving the correspondence of dRu and user terminal 401；
First receiving device 407, for receiving the Differential positioning result from user terminal 401；
Inquiry unit 408, for inquiring 401 corresponding dRu of user terminal according to correspondence；
Deviation correcting device 409, for being rectified a deviation according to the dRu inquired to the Differential positioning result from user terminal 401；
Second sending device 410, for the Differential positioning result after rectifying a deviation to be sent to user terminal 401.
User terminal 401 includes：Decoding apparatus 418, for being based on NTRIP agreements, to the Differential positioning result after correction into
Row decoding obtains accurate available 3 d space coordinate.
First embodiment is can to implement with the corresponding method embodiment of present embodiment, present embodiment with first
Mode is worked in coordination implementation.The relevant technical details mentioned in first embodiment are still effective in the present embodiment, in order to
It reduces and repeats, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in the first implementation
In mode.
5th embodiment is related to a kind of differential data protection processing system, and Fig. 5 is the structure diagram of the system.
As shown in the figure, the 5th embodiment is improved on the basis of the 4th embodiment, main improvements exist
In：
Migration processing device 404 includes：
Sub-device 411 is obtained, the base station number of coordinates in differential data can be obtained from the difference text to be broadcast
Value；
DRu can be added by addition sub-device 412 with base station coordinate values, and the new base station after being deviated is sat
Mark numerical value；
Sub-device 413 is replaced, new base station coordinate values can be replaced into difference text.
Specifically：
Migration processing device 404 includes：
Sub-device 411 is obtained, for obtaining the base station number of coordinates in differential data from the difference text to be broadcast
Value；
Addition sub-device 412, for dRu to be added with base station coordinate values, the new base station after being deviated is sat
Mark numerical value；
Sub-device 413 is replaced, for replacing new base station coordinate values into difference text；
First sending device 405 is connected to displacement sub-device 413, is broadcast for being recompiled to the difference text after displacement
Hair.
Second embodiment is can to implement with the corresponding method embodiment of present embodiment, present embodiment with second
Mode is worked in coordination implementation.The relevant technical details mentioned in second embodiment are still effective in the present embodiment, in order to
It reduces and repeats, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in the second implementation
In mode.
Sixth embodiment is related to a kind of differential data protection processing system, and Fig. 6 is the structure diagram of the system.
As shown in the figure, sixth embodiment is improved on the basis of the 4th embodiment, main improvements exist
In：
User terminal 401 includes：
Second reception device 414 can receive the differential data through migration processing from server end 402；
Differential positioning device 415 can carry out Differential positioning according to the differential data received；
Differential positioning result can be sent to server end 402 by third sending device 416.
Offset generating means 403 include：
Generating random number sub-device 417, can be according to 401 solicited message of user terminal, in the range of more than predetermined threshold
One group of random number is generated, as coordinate shift amount dRu.
Specifically：
User terminal 401 includes：
Second reception device 414, for receiving the differential data through migration processing from server end 402；
Differential positioning device 415, for carrying out Differential positioning according to the differential data received；
Third sending device 416, for Differential positioning result to be sent to server end 402.
Offset generating means 403 include：
Generating random number sub-device 417, for according to 401 solicited message of user terminal, in the range of more than predetermined threshold
One group of random number is generated, as coordinate shift amount dRu.
Third embodiment is can to implement with the corresponding method embodiment of present embodiment, present embodiment with third
Mode is worked in coordination implementation.The relevant technical details mentioned in third embodiment are still effective in the present embodiment, in order to
It reduces and repeats, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in third implementation
In mode.
It should be noted that each method embodiment of the present invention can be realized in a manner of software, hardware, firmware etc..
No matter the present invention is realized in a manner of software, hardware or firmware, instruction code may be stored in any kind of computer
In addressable memory (such as permanent either revisable volatibility is either non-volatile solid or non-solid
State, fixed or replaceable medium etc.).Equally, memory may, for example, be programmable logic array
(Programmable Array Logic, referred to as " PAL "), random access memory (Random Access Memory, referred to as
" RAM "), programmable read only memory (Programmable Read Only Memory, referred to as " PROM "), read-only memory
(Read-Only Memory, referred to as " ROM "), electrically erasable programmable read-only memory (Electrically Erasable
Programmable ROM, referred to as " EEPROM "), disk, CD, digital versatile disc (Digital Versatile Disc,
Referred to as " DVD ") etc..
Each module mentioned in each equipment embodiment of the present invention is all logic module, physically, a logic module
Can be a part for a physical module or a physical module, it can also be real with the combination of multiple physical modules
Existing, the Physical realization of these logic modules in itself is not most important, the group for the function that these logic modules are realized
Close the key for being only and solving the technical issues of proposed by the invention.In addition, in order to protrude the innovative part of the present invention, in the present invention
Each equipment embodiment is stated there is no will be introduced with solving the technical issues of proposed by the invention less close module of relationship, this
It does not indicate above equipment embodiment and there is no other modules.
It is further to note that in this patent specification, relational terms such as first and second and the like are only
Only it is used for distinguishing one entity or operation from another entity or operation, without necessarily requiring or implying these realities
There are any actual relationship or orders between body or operation.Moreover, term " comprising ", "comprising" or its it is any its
He is intended to non-exclusive inclusion by variant, so that process, method, article or equipment including a series of elements are not
Only include those elements, but also including other elements that are not explicitly listed or further include for this process, method,
Article or the intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence " including one ", and
It is not precluded in the process including the element, method, article or equipment that also there are other identical elements.
Although by referring to some of the preferred embodiment of the invention, the present invention is shown and described,
It will be understood by those skilled in the art that can to it, various changes can be made in the form and details, without departing from this hair
Bright spirit and scope.
Claims (10)
1. a kind of differential data protects processing method, which is characterized in that including step：
After server end receives user terminal solicited message, dynamic generation error range is more than the error of predetermined threshold, as coordinate
Offset dRu；
The server end is sent after carrying out migration processing to the benchmark station coordinates in the differential data of being broadcast according to the dRu
To the user terminal, Differential positioning is carried out, and preserve the correspondence of the dRu and the user terminal for the user terminal；
After Differential positioning of the received server-side from the user terminal is as a result, carry out authentication confirmation, according to the correspondence
The corresponding dRu of user terminal described in relational query, and according to the dRu inquired to the Differential positioning result from the user terminal into
Row correction, the user terminal is sent to by the Differential positioning result after correction.
2. according to the method described in claim 1, it is characterized in that, the step " server end is according to the dRu to institute
It broadcasts after the benchmark station coordinates in differential data carries out migration processing and is sent to the user terminal, difference is carried out for the user terminal
Positioning, and preserve the correspondence of the dRu and the user terminal " including following sub-step：
The server end obtains the base station coordinate values in differential data from the difference text to be broadcast；
The dRu is added by the server end with the base station coordinate values, the new benchmark station coordinates after being deviated
Numerical value；
The server end replaces the new base station coordinate values into the difference text；
The server end recompiles the difference text and broadcasts, and preserves the correspondence of the dRu and the user terminal.
3. according to the method described in claim 1, it is characterized in that, the step " server end is according to the dRu to institute
It broadcasts after the benchmark station coordinates in differential data carries out migration processing and is sent to the user terminal, difference is carried out for the user terminal
Positioning, and preserve the correspondence of the dRu and the user terminal " include step later：
The user terminal receives the differential data through migration processing from the server end, and it is poor to be carried out according to the differential data
Divide positioning, Differential positioning result is sent to the server end.
4. according to the method described in claim 1, it is characterized in that, " dynamic generation error range be more than predetermined threshold error,
The step of as coordinate shift amount dRu ", includes following sub-step：
The server end according to the user terminal solicited message, generated in the range of more than the predetermined threshold one group it is random
Number, as coordinate shift amount dRu.
5. according to the method described in claim 1, it is characterized in that, the step " sends the Differential positioning result after correction
To the user terminal " include step later：
The user terminal is based on NTRIP agreements, and the Differential positioning result after correction is decoded, and obtains accurate available space
Three-dimensional coordinate.
6. a kind of differential data protects processing system, which is characterized in that including：User terminal and server end；
The server end includes：
Offset generating means, after receiving user terminal solicited message, dynamic generation error range is more than the mistake of predetermined threshold
Difference, as coordinate shift amount dRu；
Migration processing device, for carrying out migration processing to the benchmark station coordinates in the differential data of being broadcast according to the dRu；
First sending device, the benchmark station coordinates for migration processing to be finished are sent to the user terminal, for the user terminal into
Row Differential positioning；
Storage device, for preserving the correspondence of the dRu and the user terminal；
First receiving device, for receiving the Differential positioning result from the user terminal；
Inquiry unit, for inquiring the corresponding dRu of the user terminal according to the correspondence；
Deviation correcting device, for being rectified a deviation according to the dRu inquired to the Differential positioning result from the user terminal；
Second sending device, for the Differential positioning result after rectifying a deviation to be sent to the user terminal.
7. system according to claim 6, which is characterized in that the migration processing device includes：
Sub-device is obtained, for obtaining the base station coordinate values in differential data from the difference text to be broadcast；
Addition sub-device, for the dRu to be added with the base station coordinate values, the new base station after being deviated is sat
Mark numerical value；
Sub-device is replaced, for replacing the new base station coordinate values into the difference text；
First sending device is connected to the displacement sub-device, is broadcast for being recompiled to the difference text after displacement
Hair.
8. system according to claim 6, which is characterized in that the user terminal includes：
Second reception device, for receiving the differential data through migration processing from the server end；
Differential positioning device, for carrying out Differential positioning according to the differential data received；
Third sending device, for Differential positioning result to be sent to the server end.
9. system according to claim 6, which is characterized in that the offset generating means include：
Generating random number sub-device, for according to the user terminal solicited message, being given birth in the range of more than the predetermined threshold
Into one group of random number, as coordinate shift amount dRu.
10. system according to claim 6, which is characterized in that the user terminal includes：
Decoding apparatus for being based on NTRIP agreements, is decoded the Differential positioning result after correction, obtains accurate available
3 d space coordinate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751859A (en) * | 2020-06-23 | 2020-10-09 | 国汽(北京)智能网联汽车研究院有限公司 | Method, device and system for matching positioning information of positioning terminal with map |
| CN113038458A (en) * | 2019-12-25 | 2021-06-25 | 中移智行网络科技有限公司 | Data transmission method and system |
| CN113777634A (en) * | 2021-11-12 | 2021-12-10 | 深圳华文寰宇信息科技发展有限公司 | Satellite differential positioning information security method and related equipment |
| CN115616625A (en) * | 2022-10-08 | 2023-01-17 | 国家基础地理信息中心 | GNSS real-time data migration method and system |
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