CN111638532A - Network connection method, mapping system and storage medium for measurement type GNSS receiver - Google Patents
Network connection method, mapping system and storage medium for measurement type GNSS receiver Download PDFInfo
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- CN111638532A CN111638532A CN202010292074.2A CN202010292074A CN111638532A CN 111638532 A CN111638532 A CN 111638532A CN 202010292074 A CN202010292074 A CN 202010292074A CN 111638532 A CN111638532 A CN 111638532A
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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
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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
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- Radar, Positioning & Navigation (AREA)
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Abstract
The invention discloses a network connection method, a mapping system and a storage medium of a survey type GNSS receiver, wherein at least three server addresses are arranged in the survey type GNSS receiver, the survey type GNSS receiver comprises at least two main server addresses and at least one backup server address, and the method comprises the following steps: performing ppp dialing operation after power-on, and positioning after successful dialing; determining the region to which the mobile terminal belongs according to the positioning result, and selecting a server corresponding to the region to which the mobile terminal belongs according to a built-in region selection rule to perform network connection; and when the connected server cannot be logged in within a preset time period, switching to other servers. The method can automatically select the corresponding server according to the position of the receiver, and can automatically switch to other servers when the server is abnormal and can not log in the operation process, so that the transmission of differential correction data is ensured, and the interruption of surveying and mapping operation is avoided.
Description
Technical Field
The invention relates to the technical field of global satellite navigation mapping, in particular to a network connection method, a mapping system and a storage medium of a measurement type GNSS receiver.
Background
With the development of network communication technology in China, the coverage rate of a cellular network is very high, and meanwhile, the network cost is lower and lower, so that when a surveying and mapping operation is carried out by using a measurement type GNSS receiver, the mode of adopting the cellular network as a broadcasting link of differential correction data is a mainstream mode. The normal way of broadcasting differential correction data using a cellular network is to require an intermediate server for data forwarding, which means that the reference station and the mobile station need to access the server through a TCP connection at the same time.
For the convenience of users, such servers are usually provided by manufacturers of GNSS receivers for free, and as the receivers increase, the communication pressure of the servers will increase, and whether the servers can operate stably is directly related to whether users can work normally. Although manufacturers usually provide a plurality of servers for users to choose from, in the conventional scheme, the users are required to manually configure the GNSS receiver before performing the operation, which brings great inconvenience to the outdoor operation and seriously affects the user experience and the work efficiency.
In the operation process, the problem that the surveying and mapping operation is interrupted due to abnormal servers may exist, although the existing server configuration scheme can provide a plurality of servers for a user to select, the user needs to manually select the servers when setting the station, and if the servers are abnormal in the operation process and the base station is unattended, automatic switching cannot be realized, so that the operation is interrupted.
Disclosure of Invention
In order to overcome the defects of the prior art, an objective of the present invention is to provide a network connection method for a measurement-type GNSS receiver, which can automatically select a corresponding server according to the location of the receiver itself, and can automatically switch to another server when the server is abnormal and cannot log in during the operation process, so as to ensure the transmission of differential correction data and avoid the interruption of the surveying and mapping operation.
Another objective of the present invention is to provide a network connection method for a measurement-type GNSS receiver, which can automatically select a corresponding server according to the location of the receiver itself, and can automatically switch to another server when the server is abnormal and cannot log in during the operation process, so as to ensure the transmission of differential correction data and avoid the interruption of the surveying and mapping operation.
The invention also aims to provide a surveying and mapping system based on a GNSS receiver, wherein a reference station receiver and a mobile station receiver of the surveying and mapping system can automatically select corresponding servers according to the positions of the receivers, and can automatically switch to other servers when the servers are abnormal and can not log in the operation process, so that the transmission of differential correction data is ensured, and the interruption of surveying and mapping operation is avoided.
The fourth objective of the present invention is to provide a computer-readable storage medium, which can realize automatic selection of a corresponding server according to the location of a receiver when running a program, and can automatically switch to another server when the server is abnormal and cannot log in during the operation process, so as to ensure transmission of differential correction data and avoid interruption of the surveying and mapping operation.
One of the purposes of the invention is realized by adopting the following technical scheme:
a network connection method for a survey type GNSS receiver is provided, wherein at least three server addresses are arranged in the survey type GNSS receiver, and the survey type GNSS receiver comprises at least two main server addresses and at least one backup server address, and comprises the following steps:
performing ppp dialing operation after power-on, and positioning after successful dialing;
determining the region to which the mobile terminal belongs according to the positioning result, and selecting a server corresponding to the region to which the mobile terminal belongs according to a built-in region selection rule to perform network connection;
and when the connected server cannot be logged in within a preset time period, switching to other servers.
Further, the region selection rule is: the GNSS receiver located in the first area is correspondingly connected with the first main server, the GNSS receiver located in the second area is correspondingly connected with the second main server, the GNSS receiver located in the intermediate transition area is connected with the backup server, and the intermediate transition area is located between the first area and the second area.
Further, the intermediate transition region has a cross width of 20 KM.
Further, the preset time period is 20 seconds.
The second purpose of the invention is realized by adopting the following technical scheme:
a network connection method for a survey type GNSS receiver is provided, wherein at least three server addresses are arranged in the survey type GNSS receiver, and the survey type GNSS receiver comprises at least two main server addresses and at least one backup server address, and comprises the following steps:
performing ppp dialing operation after power-on, and positioning after successful dialing;
determining the region to which the mobile terminal belongs according to the positioning result, and selecting a server corresponding to the region to which the mobile terminal belongs according to a built-in region selection rule to perform network connection;
after network connection is established with a corresponding server according to the area to which the server belongs, if no information of a reference station mounting point returned by the connected server is received, other servers are reconnected until the connected server returns the information of the reference station mounting point;
and when the connected server cannot be logged in within a preset time period, switching to other servers.
Further, the region selection rule is: the GNSS receiver located in the first area is correspondingly connected with the first main server, the GNSS receiver located in the second area is correspondingly connected with the second main server, the GNSS receiver located in the intermediate transition area is connected with the backup server, and the intermediate transition area is located between the first area and the second area.
Further, the intermediate transition region has a cross width of 20 KM.
Further, the preset time period is 20 seconds.
The third purpose of the invention is realized by adopting the following technical scheme:
a GNSS receiver-based mapping system comprising a reference station receiver, a mobile station receiver, and at least three servers, wherein at least two main servers and at least one backup server are provided, the reference station receiver and the mobile station receiver each have an address of the server built therein, the reference station receiver can perform the first survey-type GNSS receiver network connection method as described above, and the mobile station receiver can perform the second survey-type GNSS receiver network connection method as described above.
The fourth purpose of the invention is realized by adopting the following technical scheme:
a computer-readable storage medium having stored thereon an executable computer program which when executed may implement the survey-type GNSS receiver network connection method as described above.
Compared with the prior art, the invention has the beneficial effects that:
the network connection method of the measurement type GNSS receiver can automatically select the corresponding server according to the position of the receiver, and in the operation process, when the server is abnormal and can not log in, the server can be automatically switched to other servers, so that the transmission of differential correction data is ensured, and the interruption of surveying and mapping operation is avoided.
Drawings
FIG. 1 is a flowchart illustrating a network connection method for a survey type GNSS receiver according to the present invention;
FIG. 2 is a flow chart illustrating another method for connecting a GNSS receiver network according to the present invention;
fig. 3 is a schematic diagram illustrating the area division of a network connection method for a survey-type GNSS receiver according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1, a method for connecting a survey type GNSS receiver to a reference station receiver, the survey type GNSS receiver having at least three server addresses built therein, wherein the survey type GNSS receiver includes at least two main server addresses and at least one backup server address, and the three server addresses are all in the form of domain names, includes the steps of:
s11, conducting ppp dialing operation after power-on, and locating after dialing is successful;
s12, determining the region to which the mobile terminal belongs according to the positioning result, and selecting a server corresponding to the region to which the mobile terminal belongs according to a built-in region selection rule to perform network connection;
s13, when the connected server cannot be logged in within a preset time period (the preset time period may be set to 20 seconds), switching to another server.
The network connection method of the measurement type GNSS receiver can automatically select the corresponding server according to the position of the receiver, and in the operation process, when the server is abnormal and can not log in, the server can be automatically switched to other servers, so that the transmission of differential correction data is ensured, and the interruption of surveying and mapping operation is avoided. For example, the GNSS receiver is currently connected to the first main server, the second main server or the backup server may be selected for connection. Preferentially, if the first main server or the second main server is connected currently, the backup server is preferentially selected to be switched to when the abnormality occurs; and if the currently connected backup server is the backup server, switching to the first main server or the second main server.
In conventional solutions, the network connection is automatically connected to the server after the GNSS receiver is powered on. In the invention, no matter the reference station and the mobile station are started, only PPP dialing operation is finished, the server is not connected after the dialing is successful, and the network connection is carried out according to the positioning result after the GNSS positioning is successful.
As a preferred embodiment, the region selection rule is: the GNSS receiver located in the first area is correspondingly connected with the first main server, the GNSS receiver located in the second area is correspondingly connected with the second main server, the GNSS receiver located in the intermediate transition area is connected with the backup server, the intermediate transition area is located between the first area and the second area, and the range of the intermediate transition area is set to be 20 KM.
Typically, the first host server is automatically connected when the receiver is in the first zone and the second host server is automatically connected when the receiver is in the second zone. If the reference station and the mobile station are both in the first area, the two GNSS receivers are both automatically connected with the first main server, and if the first main server operates normally, the reference station and the mobile station can complete data transfer through the first main server; if the first main server is abnormal, the reference station and the mobile station can return failure when logging in, after repeated attempts for 20 seconds, if normal logging in still can not be performed, the system is automatically switched to the backup server, and at the moment, the reference station and the mobile station can complete the transmission of the differential correction data through the backup server. The above description still applies to the case where both the reference station and the mobile station are in the second area, and the server corresponds to the second main server.
Correspondingly, referring to fig. 2, the present invention further provides another network connection method for a GNSS surveying receiver applied to a mobile station receiver, where the GNSS surveying receiver has at least three server addresses, and includes at least two main server addresses and at least one backup server address, and the method includes the following steps:
s21, conducting ppp dialing operation after power-on, and locating after dialing is successful;
s22, determining the region to which the mobile terminal belongs according to the positioning result, and selecting a server corresponding to the region to which the mobile terminal belongs according to a built-in region selection rule to perform network connection;
s23, after network connection is established with a corresponding server according to the area to which the server belongs, if no information of the reference station mounting point returned by the connected server is received, other servers are reconnected until the connected server returns the information of the reference station mounting point;
s24, when the connected server cannot be logged in within a preset time period (the preset time period may be set to 20 seconds), switching to another server.
In consideration of a special case, if the reference station and the mobile station are in different areas, the reference station and the mobile station cannot simultaneously connect to one server and thus cannot normally operate. Therefore, the network connection method of the mobile station with respect to the reference station has an additional step of automatically searching whether or not to connect to the same server as the reference station. Specifically, after the mobile station is connected to the server corresponding to the area to which the mobile station belongs, it is necessary to determine whether the server is identical to the server to which the reference station is connected based on information returned from the server to which the mobile station belongs, and if the server returns information that the reference station mount point does not exist, it indicates that the server to which the reference station is connected is not the server to which the mobile station is currently connected, the mobile station automatically switches to another server, and repeatedly searches whether the server is connected to the same server as the reference station.
As a preferred embodiment, the region selection rule is: the GNSS receiver located in the first area is correspondingly connected to the first main server, the GNSS receiver located in the second area is correspondingly connected to the second main server, the GNSS receiver located in the intermediate transition area is connected to the backup server, the intermediate transition area is located between the first area and the second area, and a schematic diagram of area division is shown in fig. 3.
Considering that if the reference station and the mobile station are located in different areas, the reference station and the mobile station cannot simultaneously connect to a server and thus cannot normally operate, generally, in order to ensure the measurement accuracy, the operating ranges of the reference station and the mobile station are both less than 10KM, and therefore, an intermediate transition area with a range of 20KM is provided between the first area and the second area. Particularly, in the chinese area, the intermediate transition area includes a 10KM area range from north of the Yangtze river and a 10KM area range from south of the Yangtze river, the first area is an area other than 10KM from north of the Yangtze river, and the second area is an area other than 10KM from south of the Yangtze river.
If both the reference station and the mobile station are located within the first area or the second area, both the reference station and the mobile station are automatically connected to the first main server or the second main server. When a situation occurs in which the reference station and the mobile station are not in the same area, four situations are involved: firstly, a reference station is in a first area, and a mobile station is in a middle transition area; secondly, the mobile station is in the first area, and the reference station is in the middle transition area; thirdly, the reference station is positioned in the second area, and the mobile station is positioned in the middle transition area; and fourthly, the mobile station is positioned in the second area, and the reference station is positioned in the middle transition area. In this embodiment, the reference station may be automatically connected to the corresponding server directly according to the located area, and after the mobile station is connected to the server corresponding to the located area, if it receives the information that the connected server returns that the reference station mount point does not exist, the mobile station automatically switches to another server, and repeatedly and automatically searches whether the mobile station and the reference station are connected to the same server.
In the above way, the receiver in the first area is automatically connected to the first main server, while receivers located in the second zone are automatically connected to the second main server, while receivers located in the intermediate transition zone are automatically connected to the backup server, since the extent of the intermediate transition region is much smaller with respect to the first region and the second region, therefore, the number of receivers to which the backup server is connected may be much smaller than the first primary server and the second primary server, the probability that the backup server is abnormal due to excessive communication pressure is relatively low, and therefore, when the first main server or the second main server is abnormal, the backup server is preferentially switched to, and when the backup server is abnormal, the receiver in the middle transition area can be switched to the first main server or the second main server.
The invention also provides a mapping system based on a GNSS receiver, which comprises a reference station receiver, a mobile station receiver and at least three servers, wherein at least two main servers and at least one backup server are arranged, the reference station receiver and the mobile station receiver are internally provided with addresses of the servers, the reference station receiver can execute the first surveying type GNSS receiver network connection method, and the mobile station receiver can execute the second surveying type GNSS receiver network connection method.
Furthermore, the present invention also provides a computer-readable storage medium, which stores an executable computer program, and when the computer program runs, the network connection method of the survey type GNSS receiver as described above can be realized.
The computer-readable storage medium stores a computer program in which the method of the present invention, if implemented in the form of software functional units and sold or used as a stand-alone product, can be stored. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer storage medium and used by a processor to implement the steps of the embodiments of the method. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer storage medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc. It should be noted that the computer storage media may include content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer storage media that does not include electrical carrier signals and telecommunications signals as subject to legislation and patent practice.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A network connection method for a survey type GNSS receiver is characterized in that at least three server addresses are arranged in the survey type GNSS receiver, wherein the three server addresses comprise at least two main server addresses and at least one backup server address, and the method comprises the following steps:
performing ppp dialing operation after power-on, and positioning after successful dialing;
determining the region to which the mobile terminal belongs according to the positioning result, and selecting a server corresponding to the region to which the mobile terminal belongs according to a built-in region selection rule to perform network connection;
and when the connected server cannot be logged in within a preset time period, switching to other servers.
2. The GNSS receiver network connection method of surveying type of claim 1, wherein the area selection rule is: the GNSS receiver located in the first area is correspondingly connected with the first main server, the GNSS receiver located in the second area is correspondingly connected with the second main server, the GNSS receiver located in the intermediate transition area is connected with the backup server, and the intermediate transition area is located between the first area and the second area.
3. The GNSS receiver network connection method of claim 2, wherein the intermediate transition region has a span width of 20 KM.
4. The GNSS receiver network connection method of surveying type of claim 1, wherein the preset time period is 20 seconds.
5. A network connection method for a survey type GNSS receiver is characterized in that at least three server addresses are arranged in the survey type GNSS receiver, wherein the three server addresses comprise at least two main server addresses and at least one backup server address, and the method comprises the following steps:
performing ppp dialing operation after power-on, and positioning after successful dialing;
determining the region to which the mobile terminal belongs according to the positioning result, and selecting a server corresponding to the region to which the mobile terminal belongs according to a built-in region selection rule to perform network connection;
after network connection is established with a corresponding server according to the area to which the server belongs, if no information of a reference station mounting point returned by the connected server is received, other servers are reconnected until the connected server returns the information of the reference station mounting point;
and when the connected server cannot be logged in within a preset time period, switching to other servers.
6. The GNSS receiver network connection method of surveying type according to claim 5, wherein the area selection rule is: the GNSS receiver located in the first area is correspondingly connected with the first main server, the GNSS receiver located in the second area is correspondingly connected with the second main server, the GNSS receiver located in the intermediate transition area is connected with the backup server, and the intermediate transition area is located between the first area and the second area.
7. The GNSS receiver network connection method of surveying type of claim 6, wherein the intermediate transition region has a span width of 20 KM.
8. The GNSS receiver network connection method of surveying type of claim 5, wherein the preset time period is 20 seconds.
9. A GNSS receiver-based mapping system comprising a reference station receiver, a mobile station receiver, and at least three servers, wherein at least two main servers and at least one backup server are provided, the reference station receiver and the mobile station receiver each have an address of the server built therein, the reference station receiver can perform the survey type GNSS receiver network connection method according to any one of claims 1 to 4, and the mobile station receiver can perform the survey type GNSS receiver network connection method according to any one of claims 5 to 8.
10. A computer-readable storage medium, in which an executable computer program is stored, which when executed, is adapted to implement the method of network connection of a survey type GNSS receiver according to any of claims 1 to 8.
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| CN202010292074.2A CN111638532A (en) | 2020-04-14 | 2020-04-14 | Network connection method, mapping system and storage medium for measurement type GNSS receiver |
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| CN117270004A (en) * | 2023-11-22 | 2023-12-22 | 中交路桥科技有限公司 | Engineering mapping method, equipment, system and medium based on satellite positioning |
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