CN109085611A - A kind of GNSS receiver and the method that multiple base stations are run under same frequency - Google Patents
A kind of GNSS receiver and the method that multiple base stations are run under same frequency Download PDFInfo
- Publication number
- CN109085611A CN109085611A CN201810865136.7A CN201810865136A CN109085611A CN 109085611 A CN109085611 A CN 109085611A CN 201810865136 A CN201810865136 A CN 201810865136A CN 109085611 A CN109085611 A CN 109085611A
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- Prior art keywords
- differential corrections
- base station
- gnss receiver
- base stations
- same frequency
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Classifications
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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
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
-
- 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
- G01S19/13—Receivers
- G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of methods that multiple base stations are run under same frequency, comprising the following steps: receiving step: module receives all differential corrections data from base station by wireless communication, and the differential corrections data include index number；Judgment step: judge to receive the index number of base station and whether the index number of present mobile stations is consistent, if it is, retaining the differential corrections data of corresponding base station, if it is not, then filtering out the differential corrections data of corresponding base station.The invention also discloses a kind of GNSS receiver and computer readable storage mediums.The method that multiple base stations are run under same frequency of the invention different broadcasts delay by being arranged in different base stations, so that movement station can only at a time receive the differential corrections data that a certain stage fiducial station is broadcast, so as to avoid setting up the case where interfering with each other of multiple base stations generations under the same frequency.
Description
Technical field
The present invention relates to a kind of global navigation satellite technical field of mapping more particularly to a kind of GNSS receiver and same
The method of multiple base stations is run under frequency.
Background technique
Currently, RTK is a kind of common GNSS measurement method, RTK technology is the real-time dynamic positioning of carrier phase observation
Technology needs to utilize wireless digital broadcasting station real-time Transmission differential corrections number between base station and movement station in RTK fields of measurement
According to having reached the effect of real-time correction.But since the radio frequency band for Surveying and Mapping Industry open at present is than relatively limited, biography
Defeated channel number is fewer, therefore same radio will occurs when needing to set up when multiple base stations are worked in a region
Frequency interferes with each other and leads to not the case where normally being measured.
Summary of the invention
It for overcome the deficiencies in the prior art, can one of the objects of the present invention is to provide a kind of GNSS receiver
Solve the technical issues of running multiple base stations under same frequency.
The second object of the present invention is to provide a kind of method for running multiple base stations under same frequency, can solve
The technical issues of certainly running multiple base stations under same frequency.
The third object of the present invention is to provide a kind of computer readable storage medium, is able to solve under same frequency and transports
The technical issues of row multiple base stations.
An object of the present invention adopts the following technical scheme that realization:
A kind of GNSS receiver, including wireless communication module and central processing unit, the central processing unit is for passing through nothing
Line communication module sends and receivees differential corrections data, and same period was divided between the different time by the central processing unit
Every, and the index number in the time interval and differential corrections data corresponds, the GNSS receiver is when corresponding
Between be spaced in transmitting differential corrections data or receive differential corrections data.
Further, the aerial baud rate of the GNSS receiver is at least 9600.
Further, the aerial baud rate of the GNSS receiver is at least 19200.
Further, the time interval is 200ms.
Further, the differential corrections data include synchronous head, control word, index number, data length, data content
And check bit.
The second object of the present invention adopts the following technical scheme that realization:
A method of running multiple base stations under same frequency, which uses as appointed in one of the object of the invention
GNSS receiver described in meaning one comprising following steps:
Receiving step: module receives all differential corrections data from base station by wireless communication, and the difference is repaired
Correction data includes index number；
Judgment step: judge to receive the index number of base station and whether the index number of present mobile stations is consistent, such as
Fruit is the differential corrections data for then retaining corresponding base station, if it is not, then filtering out the differential corrections number of corresponding base station
According to.
It further, before the step of receiving further include selecting step: the index number of the selection base station to be connected.
Further, the aerial baud rate of the base station and movement station is at least 19200.
Further, the time interval is 200ms.
The third object of the present invention adopts the following technical scheme that realization:
A kind of computer readable storage medium, is stored thereon with computer program, it is characterised in that: the computer program
It is realized when being executed by processor and runs multiple base stations described in any one of two of the object of the invention under same frequency
Method.
Compared with prior art, the beneficial effects of the present invention are:
The method that multiple base stations are run under same frequency of the invention is different by being arranged in different base stations
Delay is broadcast, so that movement station can only at a time receive the differential corrections data that a certain stage fiducial station is broadcast, thus
It can be to avoid setting up that multiple base stations generate under the same frequency the case where interfering with each other.
Detailed description of the invention
Fig. 1 is the flow chart of the method that multiple base stations are run under same frequency of embodiment two.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
Embodiment one:
Present embodiment discloses a kind of GNSS receiver, including wireless communication module and central processing unit, the centres
Reason device sends and receivees differential corrections data for module by wireless communication, and same period is divided by the central processing unit
Different time intervals, and the index number in the time interval and differential corrections data corresponds, the GNSS is received
Machine emits differential corrections data in corresponding time interval or receives differential corrections data.Wherein wireless communication module includes
Network module and radio station module can select here there are two types of mode for user, when GNSS receiver uses,
Can base station and movement station be arranged according to their own needs in user, its for being set as base station is mainly believed with to satellite navigation
It number carries out long-term continuous observation, and data will be observed in real time by communications facility or timing is sent to the movement station of data center.
When GNSS receiver is set base station by user, it is also desirable to which for GNSS receiver, corresponding index is set
Number is identified different base stations by the way that corresponding index number is arranged to each base station.
Embodiment two:
It is at present that the same frequency range is same by the technical way that differential corrections data are transmitted in radio station in survey field
A period only allows a base station to broadcast differential data, is in general not in conflict, since base station transmits number
According to distance it is also limited, so can in most cases be in transmission range when thering is different construction teams to need to measure
Except, seldom occur the case where setting two is even more than base station under normal circumstances, even if occur, much all applies
Work side oneself goes to negotiate use time, thus complete the measurement of instrument data.Applicant is in long-term observation and deep visitor
In the case where the party in request at family, it is thus understood that there may be such problems, be to improve efficiency to consider, applicant passes through think of
The mode following with R & D design is examined to carry out running multiple base stations under same frequency.
As shown in Figure 1, present embodiments providing a kind of method for running multiple base stations under same frequency, the base station
Using the GNSS receiver as described in embodiment one comprising following steps:
S0: the index number of the selection base station to be connected；When being surveyed and drawn, base is typically first set
Quasi- station, broadcasts data to outside by the way that base station is lasting, this base station generally requires first when starting setting up to it
Set corresponding index number, such purpose be in order to distinguish different base stations, can also be when producer dispatches from the factory
Index number is set, but there are certain ineffective activity in this way, if two construction parties in the same area are just
Be the same index number base station just can also there are problems that interference；Therefore, highly preferred, this index number
Can be with unrestricted choice, in this way when having detected that identical index number is present in this region, then it can be autonomous
Reach the problem of avoiding interference by exchanging index number.
S1: module receives all differential corrections data from base station, the differential corrections data by wireless communication
Including index number；GNSS base station in same tranmitting frequency needs to operate under 19200 or more aerial baud rate, wave
Special rate is generally used to illustrate the speed of serial communication, the index of rate, and how many data can be transmitted by referring to that serial ports is per second；Here main
Being must be under certain high baud rate, if it is possible to can have delivery under lower baud rate in order to illustrate it
In this case the problem of scarce capacity, is merely able to one stage fiducial station of delivery, cannot complete the transmission of more stage fiducial stations data
With delivery；But be also not certain and need to run under 19200 aerial baud rate, it is also possible to more high bit rate.All
Differential corrections data are all broadcast using following data format in the base station GNSS；The data format is as follows:
| Synchronous head | Control word | Index number | Data length | Data content | Verification |
By taking aerial baud rate 19200 as an example, largest data transfer amount per second is 1900 bytes or so, GNSS base station
Differential corrections data data volume per second is 350 bytes or so.Therefore when aerial baud rate is 19200, same frequency is similarly hereinafter
The maximum quantity of the GNSS base station of Shi Yunhang is 5.And so on, baud rate is higher, can support while online host
Number of units is more, and can at least support the quantity of GNSS base station is 2.
S2: judging to receive the index number of base station and whether the index number of present mobile stations be consistent, if it is,
The differential corrections data for retaining corresponding base station, if it is not, then filtering out the differential corrections data of corresponding base station.Due to not
Different time intervals is arranged in same host, and time interval here is also signal transmission interval, therefore different in one-second period
GNSS base station be in different times interval in carry out data broadcasting.The effective time of each base station in the present embodiment
Between be divided into 200ms, when quantity if necessary to improve base station according to adaptability, effective time interval here can also be with
Other numbers such as 100ms are set as, in order to better illustrate, time interval is used in the present embodiment and is carried out for 200ms
Explanation.Movement station in same tranmitting frequency can receive what 5 GNSS base stations were sent within one second complete period
Differential corrections data, and 5 different base station index numbers can also be parsed simultaneously.User selects an effective base
Stand index number, movement station according to the number of user setting can automatic fitration fall the data of other GNSS base stations.To reach
Shield the purpose of interference.
The present invention mainly solves the feelings interfered with each other when setting up multiple base stations under same frequency in a region
Condition.Not only can be to avoid interfering with each other, but also can achieve the purpose that movement station arbitrarily switches base station.
The method that multiple base stations GNSS are run under same radio frequency disclosed by the invention is to work as to start to carry out RTK measurement
When, delay (time interval) is broadcast for each base station setting differential corrections data, each base station must have different
Delay and base station index number are broadcast, since the different base station under same radio frequency broadcasts prolonging for differential corrections data
The slow time is different, then the differential corrections number that a certain stage fiducial station is broadcast can only be received by allowing at a time movement station
According to.Joined base station index number in the differential corrections data broadcast and allow for movement station can compile according to the index that receives
Number different base station of selection.
Embodiment three:
Embodiment three discloses a kind of readable computer storage medium, which is somebody's turn to do for storing program
When program is executed by processor, the method that multiple base stations are run under same frequency of embodiment two is realized.
Certainly, a kind of storage medium comprising computer executable instructions, computer provided by the embodiment of the present invention
The method operation that executable instruction is not limited to the described above, can also be performed in method provided by any embodiment of the invention
Relevant operation.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to which by hardware realization, but in many cases, the former is more
Good embodiment.Based on this understanding, technical solution of the present invention substantially in other words contributes to the prior art
Part can be embodied in the form of software products, which can store in computer readable storage medium
In, floppy disk, read-only memory (Read-Only Memory, ROM), random access memory (Random such as computer
Access Memory, RAM), flash memory (FLASH), hard disk or CD etc., including some instructions use so that an electronic equipment
(can be personal computer, server or the network equipment etc.) executes method described in each embodiment of the present invention.
It is worth noting that, in the above-mentioned embodiment based on content update notice device, included each unit and mould
Block is only divided according to the functional logic, but is not limited to the above division, and is as long as corresponding functions can be realized
It can；In addition, the specific name of each functional unit is also only for convenience of distinguishing each other, the protection model being not intended to restrict the invention
It encloses.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (10)
1. a kind of GNSS receiver, including wireless communication module and central processing unit, the central processing unit is used for by wireless
Communication module sends and receivees differential corrections data, which is characterized in that same period is divided into difference by the central processing unit
Time interval, and the index number in the time interval and differential corrections data corresponds, and the GNSS receiver exists
Transmitting differential corrections data or reception differential corrections data in corresponding time interval.
2. GNSS receiver as described in claim 1, which is characterized in that the aerial baud rate of the GNSS receiver is at least
9600。
3. GNSS receiver as described in claim 1, which is characterized in that the aerial baud rate of the GNSS receiver is at least
19200。
4. the GNSS receiver as described in any one of claim 1-3, which is characterized in that the time interval is 200ms.
5. GNSS receiver as claimed in claim 4, which is characterized in that the differential corrections data include synchronous head, control
Word, index number, data length, data content and check bit.
6. a kind of method for running multiple base stations under same frequency, which is characterized in that the base station uses such as claim
GNSS receiver described in any one of 1-5 comprising following steps:
Receiving step: module receives all differential corrections data from base station, the differential corrections number by wireless communication
According to including index number；
Judgment step: judging to receive the index number of base station and whether the index number of present mobile stations be consistent, if so,
Then retain the differential corrections data of corresponding base station, if it is not, then filtering out the differential corrections data of corresponding base station.
7. the method for multiple base stations is run under same frequency as claimed in claim 6, which is characterized in that in receiving step
It before further include selecting step: the index number of the selection base station to be connected.
8. the method for running multiple base stations under same frequency as claimed in claims 6 or 7, which is characterized in that the base
The aerial baud rate of quasi- station and movement station is at least 19200.
9. the method for multiple base stations is run under same frequency as claimed in claim 8, which is characterized in that between the time
It is divided into 200ms.
10. a kind of computer readable storage medium, is stored thereon with computer program, it is characterised in that: the computer program
The side that multiple base stations are run under same frequency as described in any one of claim 6-9 is realized when being executed by processor
Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810865136.7A CN109085611A (en) | 2018-08-01 | 2018-08-01 | A kind of GNSS receiver and the method that multiple base stations are run under same frequency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810865136.7A CN109085611A (en) | 2018-08-01 | 2018-08-01 | A kind of GNSS receiver and the method that multiple base stations are run under same frequency |
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Cited By (2)
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| CN109683179A (en) * | 2019-01-18 | 2019-04-26 | 北京未来导航科技有限公司 | Being navigated based on low orbit satellite enhances the same frequency band receiving/transmission method and system of platform |
| CN111336970A (en) * | 2020-04-13 | 2020-06-26 | 广东星舆科技有限公司 | Monitoring method and system for displacement of CORS reference station |
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