CN108398700A - A kind of high-accuracy position system and method based on Big Dipper short message - Google Patents
A kind of high-accuracy position system and method based on Big Dipper short message Download PDFInfo
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- CN108398700A CN108398700A CN201810054531.7A CN201810054531A CN108398700A CN 108398700 A CN108398700 A CN 108398700A CN 201810054531 A CN201810054531 A CN 201810054531A CN 108398700 A CN108398700 A CN 108398700A
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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
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/40—Correcting position, velocity or attitude
- G01S19/41—Differential correction, e.g. DGPS [differential GPS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention discloses a kind of high-accuracy position system and method based on Big Dipper short message,The use demand of part professional user cannot be met for the positioning accuracy that simple Big Dipper location technology is provided,And the transmission channel of the high-precision location technique of traditional ground enhancing network relies on mobile communications network,There are problems that applying blind area in the region that mobile communication base station does not cover,The differential corrections amount data that this programme is netted using Big Dipper short message transmission ground enhancing,Pseudo range difference correction amount information being obtained from differential service platform by Big Dipper short message high precision position service platform and carrying out parsing unpack,Then by commanding machine to send Big Dipper short message by differential corrections amount data broadcasting,Have the function of that the correction amount information received unpack simultaneously framing by the hand held terminal unit of Big Dipper positioning and communicating and difference function in system,It carries out pseudo range difference and resolves acquisition sub_meter position precision.
Description
Technical field
The present invention relates to based on Big Dipper short message high-accuracy position system and method field, it is specifically a kind of be based on the Big Dipper
The high-accuracy position system and method for short message.
Background technology
Beidou satellite navigation system be China independently build, independently operated Global Satellite Navigation System, to the state in China
Family's safety, economic construction, development in science and technology and social progress have important strategic importance.Under the promotion of national policy, it is based on
The product and application system of Beidou satellite navigation system have been carried out short-term explosive growth.With Beidou satellite navigation system
The continuous popularization of application, simple Beidou receiver positioning accuracy cannot meet mapping measurement, deformation monitoring, engineering construction
Etc. professional domains user use demand.At the same time, ground enhances the technology of the high precision position service of net and using phase
To maturation, high precision position service only rely on mobile communications network carry out differential data broadcast and position passback, certain customers
Satellite-based enhancing location-based service is provided to promote positioning accuracy as communication link using based on telecommunication satellite channel, but is rented logical
Believe that channel cost is higher, equipment volume is larger, is not used widely.
Existing high-precision location technique lacks compared with the pseudo-range differential position based on Big Dipper short message there are following
Point：Existing Big Dipper location technology, RDSS positioning accuracies are having calibration region to be less than or equal to 20M, and no calibration region is less than or equal to
The positioning accuracy of 100M, Beidou II (RNSS) are less than or equal to 10M, and the positioning accuracy that simple Big Dipper location technology is provided is not
The use demand of part professional user can be met；The transmission channel of the high-precision location technique of traditional ground enhancing network relies on
Traditional mobile communications network exists in the region that mobile communication base station does not cover (such as field, sea) using blind area.
The positioning accuracy that the present invention is provided for simple Big Dipper location technology is not high, traditional ground enhancing network
There is the problems such as using blind area in high-precision location technique, it is proposed that a kind of to enhance network network using Big Dipper short message transmission ground
Differential corrections amount information, the method that sub-meter grade high accuracy positioning information is obtained on the terminal device of integrated RTD and RDSS modules.
The present invention is directed to utilize Big Dipper short message communication channel, terminal positioning precision (sub-meter grade) is promoted, reduces the biography of ground enhancing net
Defeated construction cost makes high-precision Big Dipper position service system preferably be promoted.
Invention content
The purpose of the present invention is to provide a kind of high-accuracy position system and method based on Big Dipper short message, in solution
State the problem of being proposed in background technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of high-accuracy position system based on Big Dipper short message, including differential service platform, Big Dipper short message high-precision
Location Service Platform, RDSS differential terminations and the Big Dipper command machine, the differential service platform, Big Dipper short message high precision position clothes
Pass through network connection between business platform, RDSS differential terminations and Big Dipper commander's machine；
As a further solution of the present invention：The differential service platform distributes software by CORS servers and differential data
Composition, differential data distribution software are responsible for generating and broadcasting differential correcting data；
As further scheme of the invention：The RDSS differential terminations are a to have both Big Dipper RDSS short message functions
With the handheld terminal of pseudo range difference positioning function, for the terminal development, " Big Dipper high-precision terminal software " APP, user pass through
The work(such as human-computer interaction interface completes navigation, positioning is arranged and data are shown, short message communication, Beidou communication, high precision position service
Energy；
As further scheme of the invention：The NEO-M8N difference of u-blox companies built in the RDSS differential terminations
Locating module；
As further scheme of the invention：NEO-M8N Differential positioning modules are supported poor from serial ports input RTCM V2.3
Divided data simultaneously carries out pseudo range difference positioning, and differential data maximum effectively age is 200s；
As further scheme of the invention：The RDSS differential terminations are completed by Big Dipper short message and maneuvering platform
Information exchange, pseudo range difference enhance position when, first pass through Big Dipper short message receive commander's machine broadcast differential corrections amount
Then segment data is buffered in the machine, wait for next segment difference divided data, and after having received all segmentations, each segmentation is merged into
After one complete raw differential data message and being verified, not validated data abandon and start to receive next,
Pass through the data distributing of verification to Differential positioning module；
A kind of high-precision locating method based on Big Dipper short message, includes the following steps：
S1:NTRIP certifications log in；
S2:Construct base station present position GGA sentences；
S3:It is sent to CORS service platforms；
S4:Obtain real-time RTCM V2.3 differential correcting data；
S5:Differential data is split according to RDSS short message length；
S6:Differential data is sent to commander's machine by RS232 serial ports；In this way, not changing existing CORS clothes
While mechanism is broadcast in business system authentication, the acquisition of terminal differential correcting data in region is realized；
S7:RDSS differential terminations receive the area difference data packet of commander's machine broadcast；
S8:It is reassembled as raw differential message after merging verification；
S9:Differential data is sent to Differential positioning module；
S10:Obtain differentiated high precision position coordinate；
S11:The machine high precision position information is returned to commander's machine；
S12:The Big Dipper short message high precision position service platform accesses CORS servers, obtains RTCM differential corrections
Amount；
S13:By numerous RTCM differential corrections amount information extraction dissection process, and according to the logical of the Big Dipper card in commander's machine
Letter grade splits data, and differential corrections amount information is sent by Big Dipper short message according to the communication frequency subpackage of Big Dipper card；
S14:The high precision position information of RDSS differential terminations passback is received, and carries out data storage and business processing；
Compared with prior art, the beneficial effects of the invention are as follows：Present invention incorporates traditional Big Dipper location technologies and ground
Base enhances the pseudo range difference high-precision location technique of network, and innovative has used Big Dipper short message as pseudo range difference correction amount
Delivering path, RTD and RDSS are integrated on a portable handsets so that the Big Dipper and pseudo range difference high precision technology
Advantage, which is able to fully merge, to be embodied, and the high accuracy positioning knot of sub-meter grade still can be obtained in mobile communication network blind area of coverage
Fruit greatly extends the application range of high precision position service.System obtains practical proof in survey field, has good
Using effect can be widely applied to the fields such as ground observation, emergency management and rescue, rescue and relief work, electric inspection process, forest land inspection, application
It has a extensive future, good economic benefit can be generated.Meanwhile the application in the fields such as emergency management and rescue and rescue and relief work is related to the people's
The security of the lives and property has larger social benefit.Beidou satellite navigation system of this technology based on China's independent development is carried
Transmission communication mode of the short message function of confession as the differential corrections amount of ground enhancing net, and to existing high precision position service
System is improved, and RTD and a Big Dipper generation (RDSS) function are integrated on single handheld terminal, is realized in no mobile communication
The high accuracy pseudo range Differential positioning of overlay area and position passback, solve traditional high precision position service and exist using blind area
Problem.The system enhances compared to traditional satellite-based having important application value with the more industry of operation on the sea in the wild
High precision position service, this system have prodigious advantage in cost, reliability and positioning accuracy.
Description of the drawings
Fig. 1 is a kind of system composition figure of high-accuracy position system based on Big Dipper short message.
Fig. 2 is that the differential data in a kind of high-precision locating method based on Big Dipper short message obtains flow chart.
Fig. 3 is that the Big Dipper short message high precision position service in a kind of high-precision locating method based on Big Dipper short message is flat
Platform data flowchart.
Fig. 4 is that a kind of pseudo range difference of the RDSS differential terminations in high-accuracy position system based on Big Dipper short message is high-precision
Spend process chart.
A kind of Big Dipper short message Accuracy Analysis of high-accuracy position system and method based on Big Dipper short message of Fig. 5
Figure.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1~5, in the embodiment of the present invention, a kind of high-accuracy position system based on Big Dipper short message, including difference
Service platform, Big Dipper short message high precision position service platform, RDSS differential terminations and the Big Dipper is divided to command machine, the differential service
Pass through network connection between platform, Big Dipper short message high precision position service platform, RDSS differential terminations and Big Dipper commander's machine；Institute
It states differential service platform to be made of CORS servers and differential data distribution software, differential data distribution software is responsible for generating and be broadcast
Send out differential correcting data；The network-based NTRIP authentication modes of tradition need terminal to be uploaded using the GGA sentences in NMEA agreements
For own location information to differential data player software, differential data player software is that the terminal calculates corresponding differential correcting data
And network is issued to terminal；For the present system, the communication mode based on Big Dipper short message cannot achieve needed for NTRIP certifications
The long connection wanted, but since this system is mainly used in the pseudo range difference positioning of terminal, the RTCM V2.3 difference of single base station
Correction data EFFECTIVE RANGE can reach 150Km, and all pseudo range difference terminals can use identical puppet in the range
Away from differential correcting data；For this feature, constructed near a base station in Big Dipper short message high precision position service platform
GGA sentences and be uploaded to CORS servers according to certain intervals, real-time RTCM V2.3 differential correcting data are obtained, as this
The correction data of all terminals in region；
RDSS differential terminations are a handheld terminals for having both Big Dipper RDSS short messages function and pseudo range difference positioning function,
" the Big Dipper high-precision terminal software " APP for the terminal development, user completes navigation by human-computer interaction interface, positioning is arranged
Shown with data, short message communication, Beidou communication, the functions such as high precision position service；U-blox built in the RDSS differential terminations
The NEO-M8N Differential positioning modules of company, the module are supported to input RTCM V2.3 differential datas from serial ports and carry out pseudo range difference
Positioning, differential data maximum effectively age is 200s, solves the problems, such as Big Dipper RDSS short messages propagation delay time, it can be achieved that continuing
Stable pseudo range difference positioning；
A kind of high-precision locating method based on Big Dipper short message, includes the following steps：
S1:NTRIP certifications log in；
S2:Construct base station present position GGA sentences；
S3:It is sent to CORS service platforms；
S4:Obtain real-time RTCM V2.3 differential correcting data；
S5:Differential data is split according to RDSS short message length；
S6:Differential data is sent to commander's machine by RS232 serial ports；In this way, not changing existing CORS clothes
While mechanism is broadcast in business system authentication, the acquisition of terminal differential correcting data in region is realized；
S7:RDSS differential terminations receive the area difference data packet of commander's machine broadcast；
S8:It is reassembled as raw differential message after merging verification；
S9:Differential data is sent to Differential positioning module；
S10:Obtain differentiated high precision position coordinate；
S11:The machine high precision position information is returned to commander's machine；
S12:The Big Dipper short message high precision position service platform accesses CORS servers, obtains RTCM differential corrections
Amount；
S13:By numerous RTCM differential corrections amount information extraction dissection process, and according to the logical of the Big Dipper card in commander's machine
Letter grade splits data, and differential corrections amount information is sent by Big Dipper short message according to the communication frequency subpackage of Big Dipper card；
S14:The high precision position information of RDSS differential terminations passback is received, and carries out data storage and business processing；
The information exchange with maneuvering platform is completed by Big Dipper short message, when pseudo range difference enhances and positions, is passed through first
Big Dipper short message receives the differential corrections amount segment data of commander's machine broadcast, is then buffered in the machine, waits for next segment difference score
According to after having received all segmentations, each segmentation being merged into after a complete raw differential data message and is verified, not
It is abandoned by the data of verification and starts to receive next, pass through the data distributing of verification to Differential positioning module；In order to verify
Whether the high-precision location technique proposed by the present invention based on Big Dipper short message meets wanting for pseudo range difference positioning sub-meter grade precision
It asks, static test is carried out in the position of calibration coordinate in advance；When it is implemented, for the quality of verification differential correcting data, avoid
Cause positioning accuracy to decline because aerial angle and peripheral reflection introduce multi-path jamming, therefore is adopted in the good datum mark of observation condition
It is tested with the mode of external antenna；
It is spaced about 8Km between the base station that differential service platform is chosen and terminal, terminal uses direct single-point respectively
The positioning result of station-keeping mode and 10000 epoch of pseudo range difference station-keeping mode continuous acquisition；It is converted longitude/latitude by coordinate
Degree/height conversion be east orientation/north orientation/day backward, position error as shown, directly One-Point Location horizontal error 10m with
It is interior, and distribution center deviates datum mark 3m or so；93.2% error is less than in being positioned using Big Dipper short message proposed in this paper
1m, the result meet the requirement of pseudo range difference positioning sub_meter position precision (one times of standard deviation).
The present invention operation principle be：Big Dipper short message high precision position service platform accesses differential service by network and puts down
Platform obtains ground enhancing net RTCM differential corrections amount information, and carries out dissection process to data frame, then calls Big Dipper short message
High precision position service platform commands machine management module by commanding machine to send short message, and differential corrections amount information is broadcast to down
Belong to RDSS differential terminations, RDSS differential terminations are by parsing short message content reduction differential corrections amount information and carrying out pseudo range difference
It resolves, the sub-meter grade high precision position information after resolving is passed back into Big Dipper short message high precision position service by short message and is put down
Platform carries out data storage and application processing.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacing, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection domain of invention.
Claims (7)
1. a kind of high-accuracy position system based on Big Dipper short message, including differential service platform, Big Dipper short message high precision position
Set service platform, RDSS differential terminations and Big Dipper commander's machine, which is characterized in that the differential service platform, Big Dipper short message are high
Pass through network connection between precision position service platform, RDSS differential terminations and Big Dipper commander's machine.
2. a kind of high-accuracy position system based on Big Dipper short message according to claim 1, which is characterized in that the difference
Service platform is divided to be made of CORS servers and differential data distribution software, differential data distribution software is responsible for generating and broadcasting difference
Divide correction data.
3. a kind of high-accuracy position system based on Big Dipper short message according to claim 1, which is characterized in that described
RDSS differential terminations are a handheld terminals for having both Big Dipper RDSS short messages function and pseudo range difference positioning function, for the end
End develops " Big Dipper high-precision terminal software " APP, and user completes navigation by human-computer interaction interface, positioning is arranged and data are aobvious
Show, short message communication, Beidou communication, the functions such as high precision position service.
4. a kind of high-accuracy position system based on Big Dipper short message according to claim 1, which is characterized in that described
The NEO-M8N Differential positioning modules of u-blox companies built in RDSS differential terminations.
5. a kind of high-accuracy position system based on Big Dipper short message according to claim 1, which is characterized in that NEO-
M8N Differential positioning modules are supported to input RTCM V2.3 differential datas from serial ports and carry out pseudo range difference positioning, and differential data is maximum
Effective age is 200s.
6. a kind of high-accuracy position system based on Big Dipper short message according to claim 1, which is characterized in that described
RDSS differential terminations complete the information exchange with maneuvering platform by Big Dipper short message, when pseudo range difference enhances and positions, first
The differential corrections amount segment data that the broadcast of commander's machine is received by Big Dipper short message, is then buffered in the machine, waits for next segment difference
Each segmentation is merged into after a complete raw differential data message after having received all segmentations and carries out school by divided data
It tests, not validated data abandon and start to receive next, pass through the data distributing of verification to Differential positioning module.
7. a kind of high-precision locating method based on Big Dipper short message, which is characterized in that include the following steps：
S1:NTRIP certifications log in；
S2:Construct base station present position GGA sentences；
S3:It is sent to CORS service platforms；
S4:Obtain real-time RTCM V2.3 differential correcting data；
S5:Differential data is split according to RDSS short message length；
S6:Differential data is sent to commander's machine by RS232 serial ports；In this way, not changing existing CORS services system
While mechanism is broadcast in system certification, the acquisition of terminal differential correcting data in region is realized；
S7:RDSS differential terminations receive the area difference data packet of commander's machine broadcast；
S8:It is reassembled as raw differential message after merging verification；
S9:Differential data is sent to Differential positioning module；
S10:Obtain differentiated high precision position coordinate；
S11:The machine high precision position information is returned to commander's machine；
S12:The Big Dipper short message high precision position service platform accesses CORS servers, obtains RTCM differential corrections amounts；
S13:By numerous RTCM differential corrections amount information extraction dissection process, and according to the communication etc. of the Big Dipper card in commander's machine
Grade splits data, and differential corrections amount information is sent by Big Dipper short message according to the communication frequency subpackage of Big Dipper card；
S14:The high precision position information of RDSS differential terminations passback is received, and carries out data storage and business processing.
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| CN110149404A (en) * | 2019-05-24 | 2019-08-20 | 四川盛邦润达科技有限公司 | Homemade chip Differential positioning has the device and application method of positioning timing function concurrently |
| CN111798648A (en) * | 2019-04-08 | 2020-10-20 | 千寻位置网络有限公司 | Intelligent alarm method and device, alarm platform and terminal |
| CN112083462A (en) * | 2020-09-14 | 2020-12-15 | 哈尔滨工程大学 | Ocean precise single-point positioning method |
| CN113552594A (en) * | 2021-07-13 | 2021-10-26 | 广东汇天航空航天科技有限公司 | Differential data transmission method and system, ground station, airborne terminal and storage medium |
| CN113676834A (en) * | 2021-08-25 | 2021-11-19 | 广东几米星联通讯有限公司 | Processing method, positioning device and communication method of Beidou communication positioning information |
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