A differential correction data broadcasting system, method, device and storage medium

Abstract

The present invention discloses a differential correction data broadcasting system, which connects a reference station and a mobile station to a data center in real time and uploads their own status information, so that the data center dynamically updates the communication data link for differential correction data broadcasting between the reference station and the mobile station in real time according to the status information of the reference station and the mobile station, thereby ensuring the working efficiency of surveying and mapping work and saving resources. The present invention also discloses a differential correction data broadcasting method, device and storage medium.

Description

Technical Field

[0001] The present invention relates to data communication in the field of surveying and mapping, and in particular to a differential correction data broadcasting system, method, device and storage medium. Background Art

[0002] In the prior art, when using RTK (Real-time kinematic) carrier phase differential technology for positioning in surveying and mapping operations, it is usually necessary to set up a base station and a mobile station. Among them, the base station broadcasts differential correction data to the mobile station, so that the mobile station can perform high-precision positioning of the real-time carrier phase according to the received differential correction data. At present, surveying and mapping operations usually select the data link mode of communication between the base station and the mobile station according to the operating range of the mobile station and the signal coverage of the operating area before the formal measurement. Among them, the data link mode mainly includes radio stations and cellular networks.

[0003] Since the base station is usually unattended, the data link mode between the base station and the rover cannot be changed after it is determined before the measurement starts or when the base station is set up. This may lead to the following problems:

[0004] (1) If the data link mode is set to radio mode when the base station is set up, the base station will always broadcast differential correction data in radio mode. When the operating range of the mobile station exceeds the operating distance of the radio, the current operation task must be suspended and the staff must wait for the data link between the base station and the mobile station to be reset or the base station to be reset before the operation can be continued, which seriously affects the work efficiency.

[0005] (2) If the data link mode is set to cellular network mode when the base station is set up, the base station will always broadcast differential correction data in cellular network mode. Even when the cellular network signal is poor or the distance between the mobile station and the base station is very close, the base station will continue to broadcast differential correction data in cellular network mode. When the cellular network signal is poor, it will seriously affect work efficiency. When the distance between the mobile station and the base station is very close, the base station still uses the cellular network to send differential correction data, which will cause a large waste of traffic and increase operating costs.

[0006] That is to say, in the existing working mode of surveying and mapping operations, the data link for broadcasting differential correction data cannot be changed according to changes in the working environment of the mobile station, which is likely to affect the working efficiency of the operation or lead to problems such as waste of traffic resources. Summary of the invention

[0007] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a differential correction data broadcasting system, which can solve the problems of low efficiency or waste of resources in mobile station positioning in existing surveying and mapping operations.

[0008] A second object of the present invention is to provide a differential correction data broadcasting method, which can solve the problems of low efficiency or waste of resources in mobile station positioning in existing surveying and mapping operations.

[0009] A third object of the present invention is to provide a differential correction data broadcasting device, which can solve the problems of low efficiency or waste of resources in mobile station positioning in existing surveying and mapping operations.

[0010] A fourth object of the present invention is to provide a storage medium that can solve the problems of low positioning efficiency or waste of resources of mobile stations in existing surveying and mapping operations.

[0011] One of the purposes of the present invention is achieved by the following technical solution:

[0012] A differential correction data broadcasting system, the differential correction data broadcasting system comprising a reference station, a mobile station and a data center; wherein the reference station and the mobile station are both connected to the data center in communication; when the reference station is turned on, the reference station enables a built-in radio station and a cellular network of the reference station and automatically connects to the data center through the cellular network, and uploads the status information of the reference station in real time; when the mobile station is turned on, the mobile station enables a built-in radio station and a cellular network of the mobile station and automatically connects to the data center through the cellular network, and uploads the status information of the mobile station in real time; the data center is used to obtain a decision result based on the status information of the reference station and the status information of the mobile station and transmit the result to the data center; The decision results are returned to the base station and the mobile station respectively, so that the base station and the mobile station select the corresponding communication data link for broadcasting the differential correction data according to the decision results; wherein the communication data link for broadcasting the differential correction data is a built-in radio or a cellular network; the status information of the base station includes the body number of the base station, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station, and the radio channel of the base station; the status information of the mobile station includes the body number of the mobile station, the body number of the base station to which the mobile station needs to connect, the radio signal strength of the mobile station, and the cellular network signal strength of the mobile station.

[0013] Furthermore, when the data center sends the decision result to the mobile station, it also sends the body number of the base station, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station and the radio channel of the base station to the mobile station.

[0014] Furthermore, the data center is further configured to: when the radio signal strength of the mobile station is greater than or equal to a preset threshold value, and the spatial distance between the reference station and the mobile station is greater than the operating distance of the built-in radio station, send the network parameters of the cellular network to the mobile station and the reference station respectively;

[0015] When the radio signal strength of the mobile station is greater than or equal to the preset threshold value, and the spatial distance between the base station and the mobile station is less than or equal to the operating distance of the built-in radio, the radio parameters of the built-in radio are sent to the mobile station and the base station respectively;

[0016] When the radio signal strength of the mobile station is less than a preset threshold value, the network parameters of the cellular network are sent to the mobile station and the base station respectively.

[0017] The second object of the present invention is achieved by adopting the following technical solution:

[0018] Solution 1

[0019] A differential correction data broadcasting method is applied to a differential correction data broadcasting system adopted as one of the purposes of the present invention, and the differential correction data broadcasting method comprises the following steps:

[0020] Connection steps: receiving a connection signal from the reference station through the data center and establishing a communication connection between the data center and the reference station, receiving a connection signal from the mobile station through the data center and establishing a communication connection between the data center and the mobile station;

[0021] Decision-making steps: receiving the status information of the mobile station and the status information of the base station in real time through the data center, and obtaining a decision result based on the status information of the mobile station and the status information of the base station, and sending the decision result to the base station and the mobile station respectively, so that the base station and the mobile station select the communication data link for broadcasting the differential correction data according to the decision result.

[0022] Furthermore, the decision step also includes: when sending the decision result to the mobile station through the data center, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station and the radio channel of the base station are also sent to the mobile station.

[0023] Furthermore, the decision-making step further includes:

[0024] The first judgment step: judging whether the radio signal strength of the mobile station is greater than or equal to the preset threshold value through the data center, if so, executing the second judgment step; if not, executing the network parameter sending step;

[0025] The second judgment step: when the data center judges whether the spatial distance between the reference station and the mobile station is greater than the operating distance of the built-in radio, if so, the network parameter sending step is executed; if so, the radio parameter sending step is executed;

[0026] Network parameter delivery step: the network parameters of the cellular network are delivered to the mobile station and the base station through the data center;

[0027] Radio parameter delivery step: The radio parameters of the built-in radio are delivered to the mobile station and the base station through the data center.

[0028] Solution 2

[0029] A differential correction data broadcasting method is applied to a differential correction data broadcasting system adopted as one of the purposes of the present invention, and the differential correction data broadcasting method comprises the following steps:

[0030] Power-on steps: When the base station is powered on, the base station enables both the built-in radio and the cellular network;

[0031] Connection steps: The base station automatically connects to the data center via the cellular network;

[0032] Status uploading step: the base station uploads the status information of the base station in real time through the cellular network; the status information of the base station includes the body number of the base station, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station and the radio channel of the base station;

[0033] Broadcasting step: the base station receives the decision result sent by the data center, and sends the differential correction data according to the decision result; when the communication data link in the decision result is a cellular network, the base station sends the differential correction data to the data center, and sends the differential correction data to the mobile station through the data center; when the communication data link in the decision result is a built-in radio station, the base station sends the differential correction data to the mobile station by broadcasting according to a fixed frequency.

[0034] Option 3

[0035] A differential correction data broadcasting method is applied to a differential correction data broadcasting system adopted as one of the purposes of the present invention, and the differential correction data broadcasting method comprises the following steps:

[0036] Power-on steps: When the mobile station is powered on, the mobile station simultaneously enables the cellular network and the built-in radio;

[0037] Connection steps: The mobile station automatically connects to the data center through the cellular network;

[0038] Upload step: The mobile station uploads the status information of the mobile station to the data center in real time;

[0039] Data receiving step: the mobile station receives the decision result sent by the data center, and receives the differential correction data sent by the reference station according to the decision result; when the communication data link in the decision result is a cellular network, the mobile station receives the differential correction data sent by the reference station through the data center; when the communication data link in the decision result is a built-in radio, the mobile station receives the differential correction data broadcasted by the reference station through the built-in radio; the status information of the mobile station includes the body number of the mobile station and the body number of the reference station to be connected;

[0040] Positioning steps: Position yourself based on the received differential correction data.

[0041] Furthermore, the data receiving step also includes: the mobile station receives the differential data format of the reference station to be connected, the mounting point of the reference station, the radio protocol of the reference station and the radio channel of the reference station sent by the data center.

[0042] The third object of the present invention is achieved by adopting the following technical solution:

[0043] Solution 1

[0044] A differential correction data broadcasting device comprises a memory and a processor, wherein the memory stores a differential correction data broadcasting program that can be run on the processor, and the differential correction data broadcasting program is a computer program. When the processor executes the differential correction data broadcasting program, the steps of a differential correction data broadcasting method described in scheme 1 according to the second object of the present invention are implemented.

[0045] Solution 2

[0046] A differential correction data broadcasting device comprises a memory and a processor, wherein the memory stores a differential correction data broadcasting program that can be run on the processor, and the differential correction data broadcasting program is a computer program. When the processor executes the differential correction data broadcasting program, the steps of a differential correction data broadcasting method described in scheme 2 of the second object of the present invention are implemented.

[0047] Option 3

[0048] A differential correction data broadcasting device comprises a memory and a processor, wherein the memory stores a differential correction data broadcasting program that can be run on the processor, and the differential correction data broadcasting program is a computer program. When the processor executes the differential correction data broadcasting program, the steps of a differential correction data broadcasting method described in scheme 3 of the second object of the present invention are implemented.

[0049] The fourth object of the present invention is achieved by adopting the following technical solution:

[0050] Solution 1

[0051] A storage medium, which is a computer-readable storage medium, stores a differential correction data broadcasting program, which is a computer program. When the differential correction data broadcasting program is executed by a processor, the steps of a differential correction data broadcasting method described in scheme 1 according to the second purpose of the present invention are implemented.

[0052] Solution 2

[0053] A storage medium, which is a computer-readable storage medium, stores a differential correction data broadcasting program, which is a computer program. When the differential correction data broadcasting program is executed by a processor, the steps of a differential correction data broadcasting method described in scheme 2 according to the second object of the present invention are implemented.

[0054] Option 3

[0055] A storage medium, wherein the storage medium is a computer-readable storage medium, on which a differential correction data broadcasting program is stored, wherein the differential correction data broadcasting program is a computer program, and when the differential correction data broadcasting program is executed by a processor, the steps of a differential correction data broadcasting method described in scheme 3 of the second object of the present invention are implemented.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] The present invention applies a variety of communication technologies to the positioning system of surveying and mapping operations, and dynamically updates the communication data link mode of differential correction data broadcast between the base station and the mobile station in real time according to the working environment of the mobile station and the base station, which not only ensures the working efficiency of the surveying and mapping operations, but also saves resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 A module diagram of a differential correction data broadcasting system provided by the present invention;

[0059] Figure 2 A schematic diagram of the data packet format for uploading data to a data center by a base station and a mobile station provided by the present invention;

[0060] Figure 3 A flow chart of a differential correction data broadcasting method applied to a data center provided by the present invention;

[0061] Figure 4 for Figure 3 Flow chart of step A3 in FIG.

[0062] Figure 5 A flow chart of a differential correction data broadcasting method applied to a reference station provided by the present invention;

[0063] Figure 6 A flow chart of a differential correction data broadcasting method applied to a mobile station provided by the present invention;

[0064] Figure 7 A module diagram of a differential correction data broadcasting device provided by the present invention.

[0065] In the figure: 11, memory; 12, processor; 13, communication bus; 14, network interface. DETAILED DESCRIPTION

[0066] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0067] Embodiment 1

[0068] In view of the problem that the data link for broadcasting differential correction data cannot be adjusted according to the actual working environment during positioning in traditional surveying and mapping operation modes, the present invention makes full use of the integration of multiple communication technologies and rotates the optimal data link in real time according to the signal coverage of the cellular network and the coverage of the radio station during the surveying and mapping operation, thereby greatly reducing resource costs without affecting work efficiency.

[0069] That is, when the mobile station is within the coverage of the base station's radio station, the differential correction data broadcast between the base station and the mobile station automatically uses the radio station's data link; when the mobile station is beyond the coverage of the base station's radio station, the differential correction data broadcast between the base station and the mobile station uses the cellular network's data link. By dynamically adjusting the data link mode for differential correction data broadcast in real time, the operating efficiency can be greatly improved and the operating cost can be reduced.

[0070] like Figure 1 As shown, the present invention provides a preferred embodiment, a differential correction data broadcasting system, including a reference station, a mobile station and a data center.

[0071] Among them, the base station and the mobile station are connected to and communicate with the data center.

[0072] Both the base station and the mobile station have built-in radio and cellular networks, that is, both the base station and the mobile station support both radio and cellular network communication data links.

[0073] When the base station is powered on, both the built-in radio and the cellular network are enabled. That is, after the base station is powered on, both the built-in radio and the cellular network of the base station are enabled and activated.

[0074] Similarly, when the mobile station is turned on, the built-in radio and the cellular network are enabled at the same time. That is, after the mobile station is turned on, the built-in radio and the cellular network of the mobile station are enabled at the same time and are in an activated state.

[0075] Furthermore, after the base station and the mobile station are powered on, they are automatically connected to the data center via the cellular network.

[0076] In order to facilitate the connection between the base station or mobile station and the data center, the present invention pre-builds the network address of the data center into the firmware of the base station and the mobile station. In this way, when the base station or mobile station is turned on, it will automatically connect to the data center through the cellular network.

[0077] Preferably, the data center in the present invention mainly provides two services: differential correction data broadcasting service and scheduling decision service.

[0078] Among them, the differential correction data broadcast service means that when the communication data link between the base station and the mobile station is a cellular network, the base station first forwards the differential correction data to the data center, and then forwards the differential correction data to the mobile station through the data center.

[0079] The scheduling decision service refers to a comprehensive evaluation of the real-time status information of the base station and the mobile station to obtain an evaluation result, and selects the optimal communication data link between the base station and the mobile station based on the evaluation result to realize the broadcast of differential correction data.

[0080] The scheduling decision service is a continuously running service, that is, each time the base station receiver and the mobile station receiver are turned on, they are automatically connected to the scheduling decision service of the data center.

[0081] Since the communication data link between the mobile station and the base station in the present invention is determined by the data center, the present invention does not require any parameter configuration of the base station before the base station is turned on and operated; similarly, for the mobile station, the user only needs to configure the body number of the base station to be connected to the mobile station. The body number of the base station is a unique identifier of the host of the base station.

[0082] When the base station and mobile station are powered on and connected to the data center, they also upload their status information to the data center in real time.

[0083] The data packet of the uploaded status information may be transmitted in the form of text or binary data.

[0084] The uploaded status information includes various types of data, such as Figure 2As shown: Item 1 is the mobile station's body number, Item 2 is the base station's body number, Item 3 is the machine type, Item 5 is the mobile station's radio signal strength, Item 6 is the mobile station's cellular network signal strength, Item 7 is the base station's differential data format, Item 8 is the base station's mounting point, Item 9 is the base station's radio protocol, and Item 10 is the base station's radio channel. Among them, the machine type in Item 3 is a base station or a mobile station.

[0085] That is to say, for the base station, item 3 is the base station, item 1, item 5, and item 6 are all empty, item 7 is the differential data format of the base station, item 8 is the mount point of the base station, item 9 is the radio protocol of the base station, and item 10 is the radio channel of the base station.

[0086] For the mobile station, item 3 is the mobile station, item 1 is the body number of the mobile station, item 2 is the body number of the base station to which the mobile station needs to connect, item 5 is the radio signal strength of the mobile station, item 6 is the cellular network signal strength of the mobile station, and items 7, 8, 9, and 10 are all empty.

[0087] Furthermore, after receiving the status information uploaded by the reference station and the status information uploaded by the mobile station, the data center makes a decision according to a preset decision logic to obtain a decision result, and sends the decision result to the reference station and the mobile station respectively.

[0088] At the same time, since the present invention only sets the body number of the base station to be connected for the mobile station before operation, in order to facilitate the transmission of differential correction data between the base station and the mobile station, the data center needs to send the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station, and the radio channel of the base station to the mobile station when sending the decision result to the mobile station.

[0089] The communication data link in the present invention includes a radio station and a cellular network. When the communication data link in the decision result is a cellular network, the reference station first sends the differential correction data to the data center, and forwards the differential correction data to the mobile station through the data center.

[0090] When the communication data link in the decision result is a built-in radio, the base station sends the differential correction data by broadcasting, and the mobile station receives the differential correction data through the radio. Preferably, the base station broadcasts the differential correction data at a fixed frequency; the mobile station receives the differential correction data sent at the corresponding frequency according to the radio channel of the base station.

[0091] Preferably, the preset decision logic is specifically:

[0092] When the radio signal strength of the mobile station is less than the threshold value, the built-in radio is used to broadcast the differential correction data and send the radio parameters to the mobile station or the base station.

[0093] The threshold value is the radio signal strength received by the mobile station. The signal strength received by the mobile station can represent the distance between the base station and the mobile station.

[0094] In addition, due to the influence of environmental factors, the signal strength received by the mobile station when representing the distance between the base station and the mobile station may be different from the actual distance. Therefore, when the radio signal strength of the mobile station is greater than or equal to the threshold value, it is necessary to further judge the actual spatial distance between the two to see whether the spatial distance can reach the operating range of the built-in radio.

[0095] When the radio signal strength of the mobile station is greater than or equal to the threshold value, and the spatial distance between the base station and the mobile station is less than or equal to the operating distance of the built-in radio, the built-in radio is used to broadcast differential correction data, and the radio parameters are sent to the mobile station and the base station respectively.

[0096] When the signal strength of the mobile station's radio is greater than or equal to the threshold value, and the spatial distance between the base station and the mobile station is greater than the operating distance of the built-in radio, the cellular network is used to broadcast differential correction data, and network parameters are sent to the mobile station and the base station respectively.

[0097] The present invention determines the currently used communication data link based on the radio signal strength that the mobile station can receive and the spatial distance between the base station and the mobile station; and changes the data link for broadcasting differential correction data according to the working environment of the mobile station. That is, when the mobile station and the base station are powered on, their real-time status information will be sent to the data center in real time; each time the data center receives the real-time status information sent by the base station and the mobile station, it needs to make a decision based on the preset decision logic, and return the decision result to the mobile station and the base station, thereby realizing that the data link between the base station and the mobile station can be dynamically changed according to the working environment of the mobile station, thereby saving resource costs without affecting work efficiency.

[0098] In addition, in the transmission operation mode, users usually need to set multiple parameter data such as server IP, server port, mount point, differential data format and radio channel for the base station and mobile station respectively. If any of the parameters is set incorrectly, it will lead to a situation where the operation cannot be normal. In the present invention, the selection of the data link for the base station and the mobile station is determined by the data center. Therefore, the base station does not need to set any parameters. The user only needs to enter the machine number of a base station in the mobile station. Therefore, for the user, the present invention greatly improves the user's operating experience and reduces the probability of error.

[0099] In addition, preferably, the present invention can realize the positioning of multiple mobile stations at the same time. Each mobile station automatically connects to the data center and uploads its own status information, so that the data center selects a communication data link for differential correction data broadcasting between each mobile station and the base station according to the status information of the base station and each mobile station.

[0100] Embodiment 2

[0101] Based on the first embodiment, the present invention provides a preferred embodiment, a differential correction data broadcasting method, which is applied to a data center of a differential correction data broadcasting system as in the first embodiment, such as Figure 3 As shown, the following steps are included:

[0102] Step A1: Receive the connection signal between the reference station and the mobile station through the data center, and establish the connection between the data center and the reference station, and the connection between the data center and the mobile station. Connect the data center to the reference station, and the data center to the mobile station, and receive the status information uploaded by the mobile station and the reference station in real time.

[0103] Step A2: receiving the status information of the mobile station and the status information of the reference station in real time through the data center.

[0104] Step A3: The data center obtains a decision result based on the status information of the mobile station, the status information of the reference station and the preset decision logic.

[0105] Step A4: Send the decision result to the reference station through the data center, so that the reference station selects a data link for broadcasting differential correction data according to the decision result.

[0106] Step A5: Send the decision result to the mobile station through the data center, so that the mobile station selects the data link for broadcasting the differential correction data according to the decision result.

[0107] Furthermore, step A5 also includes: step A51, when the decision result is sent to the mobile station through the data center, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station and the radio channel of the base station are also sent to the mobile station.

[0108] Since the mobile station is only configured with the body number of the base station to which it needs to connect, the data center also needs to send the base station's information to the mobile station to facilitate the broadcast of differential correction data between the two.

[0109] Wherein, the step A4 further comprises:

[0110] Step A41: When the communication data link in the decision result is a cellular network, the network parameters are sent to the reference station and the mobile station respectively through the data center; at the same time, the differential correction data of the reference station is received and forwarded to the mobile station.

[0111] Step A42: When the communication data link in the decision result is a built-in radio, the radio parameters are sent to the reference station and the mobile station through the data center.

[0112] Furthermore, if Figure 4 As shown, step A3 also includes:

[0113] Step A31, determine whether the radio signal strength of the mobile station is greater than or equal to the threshold value, if so, execute step A32; if not, execute step A33.

[0114] Step A32: determine whether the spatial distance between the base station and the mobile station is greater than the operating distance of the built-in radio. If so, execute step A33; if so, execute step A34.

[0115] Step A34: Send the network parameters to the mobile station and the reference station; at the same time, receive the differential correction data sent by the reference station and forward it to the mobile station.

[0116] Step A33: Send the radio parameters to the mobile station and the base station.

[0117] Embodiment 3

[0118] Based on the first embodiment, the present invention provides a preferred embodiment, a differential correction data broadcasting method, which is applied to a base station of a differential correction data broadcasting system as in the first embodiment, such as Figure 5 As shown, the following steps are included:

[0119] Step B1: When the base station is powered on, the base station simultaneously enables the cellular network and the built-in radio.

[0120] Step B2: The base station automatically connects to the data center via the cellular network.

[0121] Step B3: The base station uploads the status information of the base station in real time through the cellular network, wherein the status information of the base station includes the body number of the base station, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station and the radio channel of the base station.

[0122] Step B4: The reference station receives the decision result sent by the data center, and sends out the differential correction data according to the decision result.

[0123] The step B4 comprises:

[0124] Step B41: When the communication data link in the decision result is a cellular network, the base station sends the differential correction data to the data center, and sends the differential correction data to the mobile station through the data center.

[0125] Step B42: When the communication data link in the decision result is a built-in radio, the base station sends the differential correction data to the mobile station by broadcasting according to a fixed frequency.

[0126] Embodiment 4

[0127] Based on the first embodiment, the present invention provides a preferred embodiment, a differential correction data broadcasting method, which is applied to a mobile station of a differential correction data broadcasting system as in the first embodiment, such as Figure 6 As shown, the following steps are included:

[0128] Step C1, when the mobile station is turned on, the mobile station simultaneously enables the cellular network and the built-in radio;

[0129] Step C2: The mobile station automatically connects to the data center via the cellular network;

[0130] Step C3: The mobile station uploads the status information of the mobile station to the data center in real time;

[0131] Step C4: The mobile station receives the decision result sent by the data center, and receives the differential correction data sent by the reference station according to the decision result.

[0132] Step C5: Perform self-positioning according to the received differential correction data.

[0133] The step C4 further comprises:

[0134] Step C41: When the communication data link in the decision result is a cellular network, differential correction data sent by the reference station and forwarded by the receiving data center is received.

[0135] Step C42: When the communication data link in the decision result is a built-in radio, the differential correction data broadcasted by the reference station is received through the built-in radio; the status information of the mobile station includes the body number of the mobile station and the body number of the reference station to be connected.

[0136] The step C4 further includes: the mobile station receives the differential data format of the reference station, the mounting point of the reference station, the radio protocol of the reference station and the radio channel of the reference station sent by the data center and sends them to the mobile station.

[0137] Embodiment 5

[0138] The present invention provides a differential correction data broadcasting device. Figure 7 FIG. 1 is a schematic diagram of the internal structure of a differential correction data broadcasting device provided by an embodiment of the present invention.

[0139] In this embodiment, the differential correction data broadcasting device can be a PC (Personal Computer), or a terminal device such as a smart phone, a tablet computer, a portable computer, etc. The differential correction data broadcasting device at least includes: a processor 12 , a communication bus 13 , a network interface 14 and a memory 11 .

[0140] The memory 11 includes at least one type of readable storage medium, and the readable storage medium includes a flash memory, a hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. In some embodiments, the memory 11 may be an internal storage unit of the differential correction data broadcasting device, such as a hard disk of the differential correction data broadcasting device. In other embodiments, the memory 11 may also be an external storage device of the differential correction data broadcasting device, such as a plug-in hard disk equipped on the differential correction data broadcasting device, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card, etc. Further, the memory 11 may also include both an internal storage unit and an external storage device of the differential correction data broadcasting device. The memory 11 may not only be used to store application software and various types of data installed in the differential correction data broadcasting device, such as the code of the differential correction data broadcasting program, etc., but also be used to temporarily store data that has been output or is to be output.

[0141] In some embodiments, the processor 12 may be a central processing unit (CPU), a controller, a microcontroller, a microprocessor or other data processing chip, and is used to run the program code stored in the memory 11 or process data, such as executing a differential correction data broadcasting program.

[0142] The communication bus 13 is used to realize the connection and communication between these components.

[0143] The network interface 14 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface), and is generally used to establish a communication connection between the differential correction data broadcasting device and other electronic devices.

[0144] Optionally, the differential correction data broadcasting device may further include a user interface, which may include a display (Display), an input unit such as a keyboard (Keyboard), and the optional user interface may also include a standard wired interface and a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode) touch device, etc. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the differential correction data broadcasting device and to display a visualized user interface.

[0145] Figure 7 Only the differential correction data broadcasting device having components 11-14 and the differential correction data broadcasting program is shown. It can be understood by those skilled in the art that Figure 7 The structure shown does not constitute a limitation on the differential correction data broadcasting device, and may include fewer or more components than shown in the figure, or combine some components, or arrange the components differently.

[0146] exist Figure 7 In the embodiment of the differential correction data broadcasting device shown, the memory 11 stores a differential correction data broadcasting program; when the processor 12 executes the differential correction data broadcasting program stored in the memory 11, the following steps are implemented:

[0147] Step A1: Receive the connection signal between the reference station and the mobile station through the data center, and establish the connection between the data center and the reference station, and the connection between the data center and the mobile station. Connect the data center to the reference station, and the data center to the mobile station, and receive the status information uploaded by the mobile station and the reference station in real time.

[0148] Step A2: receiving the status information of the mobile station and the status information of the reference station in real time through the data center.

[0149] Step A3: The data center obtains a decision result based on the status information of the mobile station, the status information of the reference station and the preset decision logic.

[0150] Step A4: Send the decision result to the reference station through the data center, so that the reference station selects a data link for broadcasting differential correction data according to the decision result.

[0151] Step A5: Send the decision result to the mobile station through the data center, so that the mobile station selects the data link for broadcasting the differential correction data according to the decision result.

[0152] Furthermore, step A5 also includes: step A51, when the decision result is sent to the mobile station through the data center, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station and the radio channel of the base station are also sent to the mobile station.

[0153] Since the mobile station is only configured with the body number of the base station to which it needs to connect, the data center also needs to send the base station's information to the mobile station to facilitate the broadcast of differential correction data between the two.

[0154] Wherein, the step A4 further comprises:

[0155] Step A41: When the communication data link in the decision result is a cellular network, the network parameters are sent to the reference station and the mobile station respectively through the data center; at the same time, the differential correction data of the reference station is received and forwarded to the mobile station.

[0156] Step A42: When the communication data link in the decision result is a built-in radio, the radio parameters are sent to the reference station and the mobile station through the data center.

[0157] Furthermore, step A3 also includes:

[0158] Step A31, determine whether the radio signal strength of the mobile station is greater than or equal to the threshold value, if so, execute step A32; if not, execute step A33.

[0159] Step A32: determine whether the spatial distance between the base station and the mobile station is greater than the operating distance of the built-in radio. If so, execute step A33; if so, execute step A34.

[0160] Step A34: Send the network parameters to the mobile station and the reference station; at the same time, receive the differential correction data sent by the reference station and forward it to the mobile station.

[0161] Step A33: Send the radio parameters to the mobile station and the base station.

[0162] Alternatively, the processor 12 implements the following steps when executing the differential correction data broadcasting program stored in the memory 11:

[0163] Step B1: When the base station is powered on, the base station simultaneously enables the cellular network and the built-in radio.

[0164] Step B2: The base station automatically connects to the data center via the cellular network.

[0165] Step B3: The base station uploads the status information of the base station in real time through the cellular network, wherein the status information of the base station includes the body number of the base station, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station and the radio channel of the base station.

[0166] Step B4: The reference station receives the decision result sent by the data center, and sends out the differential correction data according to the decision result.

[0167] The step B4 comprises:

[0168] Step B41: When the communication data link in the decision result is a cellular network, the base station sends the differential correction data to the data center, and sends the differential correction data to the mobile station through the data center.

[0169] Step B42: When the communication data link in the decision result is a built-in radio, the base station sends the differential correction data to the mobile station by broadcasting according to a fixed frequency.

[0170] Alternatively, the processor 12 implements the following steps when executing the differential correction data broadcasting program stored in the memory 11:

[0171] Step C1, when the mobile station is turned on, the mobile station simultaneously enables the cellular network and the built-in radio;

[0172] Step C2: The mobile station automatically connects to the data center via the cellular network;

[0173] Step C3: The mobile station uploads the status information of the mobile station to the data center in real time;

[0174] Step C4: The mobile station receives the decision result sent by the data center, and receives the differential correction data sent by the reference station according to the decision result.

[0175] Step C5: Perform self-positioning according to the received differential correction data.

[0176] The step C4 further comprises:

[0177] Step C41: When the communication data link in the decision result is a cellular network, differential correction data sent by the reference station and forwarded by the receiving data center is received.

[0178] Step C42: When the communication data link in the decision result is a built-in radio, the differential correction data broadcasted by the reference station is received through the built-in radio; the status information of the mobile station includes the body number of the mobile station and the body number of the reference station to be connected.

[0179] The step C4 further includes: the mobile station receives the differential data format of the reference station, the mounting point of the reference station, the radio protocol of the reference station and the radio channel of the reference station sent by the data center and sends them to the mobile station.

[0180] Embodiment 6

[0181] A storage medium, wherein the storage medium is a computer-readable storage medium, on which a differential correction data broadcasting program is stored, wherein the differential correction data broadcasting program is a computer program, and when the differential correction data broadcasting program is executed by a processor, the steps of a differential correction data broadcasting method as described in any one of Embodiment 2, Embodiment 3, or Embodiment 4 are implemented.

[0182] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A differential correction data broadcasting system, characterized in that: The differential correction data broadcasting system includes a reference station, a mobile station and a data center; wherein the reference station and the mobile station are both connected to the data center in communication; when the reference station is turned on, the reference station enables the built-in radio station and the cellular network of the reference station and automatically connects to the data center through the cellular network, and uploads the status information of the reference station in real time; when the mobile station is turned on, the mobile station enables the built-in radio station and the cellular network of the mobile station and automatically connects to the data center through the cellular network, and uploads the status information of the mobile station in real time; the data center is used to obtain a decision result based on the status information of the reference station and the status information of the mobile station and distribute the decision result The information is returned to the base station and the mobile station respectively, so that the base station and the mobile station select the corresponding communication data link for broadcasting the differential correction data according to the decision result; wherein the communication data link for broadcasting the differential correction data is a built-in radio or a cellular network; the status information of the base station includes the body number of the base station, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station, and the radio channel of the base station; the status information of the mobile station includes the body number of the mobile station, the body number of the base station to which the mobile station needs to connect, the radio signal strength of the mobile station, and the cellular network signal strength of the mobile station; The data center is further configured to: when the radio signal strength of the mobile station is greater than or equal to a preset threshold value, and the spatial distance between the reference station and the mobile station is greater than the operating distance of the built-in radio station, send the network parameters of the cellular network to the mobile station and the reference station respectively; When the radio signal strength of the mobile station is greater than or equal to the preset threshold value, and the spatial distance between the base station and the mobile station is less than or equal to the operating distance of the built-in radio, the radio parameters of the built-in radio are sent to the mobile station and the base station respectively; When the radio signal strength of the mobile station is less than a preset threshold value, the network parameters of the cellular network are sent to the mobile station and the base station respectively.

2. A differential correction data broadcasting system according to claim 1, characterized in that: When the data center sends the decision result to the mobile station, it also sends the body number of the reference station, the differential data format of the reference station, the mounting point of the reference station, the radio protocol of the reference station and the radio channel of the reference station to the mobile station.

3. A differential correction data broadcasting method, applied to a differential correction data broadcasting system as claimed in any one of claims 1 to 2, characterized in that: The differential correction data broadcasting method comprises the following steps: Connection steps: receiving a connection signal from the reference station through the data center and establishing a communication connection between the data center and the reference station, receiving a connection signal from the mobile station through the data center and establishing a communication connection between the data center and the mobile station; Decision-making step: receiving the status information of the mobile station and the status information of the reference station in real time through the data center, obtaining a decision result according to the status information of the mobile station and the status information of the reference station, and sending the decision result to the reference station and the mobile station respectively, so that the reference station and the mobile station select a communication data link for broadcasting differential correction data according to the decision result; The decision making step also includes: The first judgment step: judging whether the radio signal strength of the mobile station is greater than or equal to the preset threshold value through the data center, if so, executing the second judgment step; if not, executing the network parameter sending step; The second judgment step: when the data center judges whether the spatial distance between the reference station and the mobile station is greater than the operating distance of the built-in radio, if so, the network parameter sending step is executed; if so, the radio parameter sending step is executed; Network parameter delivery step: the network parameters of the cellular network are delivered to the mobile station and the base station through the data center; Radio parameter delivery step: The radio parameters of the built-in radio are delivered to the mobile station and the base station through the data center.

4. A differential correction data broadcasting method according to claim 3, characterized in that: The decision step also includes: when sending the decision result to the mobile station through the data center, the differential data format of the reference station, the mounting point of the reference station, the radio protocol of the reference station and the radio channel of the reference station are also sent to the mobile station.

5. A differential correction data broadcasting device, comprising a memory and a processor, wherein the memory stores a differential correction data broadcasting program that can be run on the processor, and the differential correction data broadcasting program is a computer program, characterized in that: When the processor executes the differential correction data broadcasting program, a differential correction data broadcasting method as described in any one of claims 3 to 4 is implemented.

6. A storage medium, the storage medium being a computer-readable storage medium, storing a differential correction data broadcasting program thereon, the differential correction data broadcasting program being a computer program, characterized in that: When the differential correction data broadcasting program is executed by a processor, a differential correction data broadcasting method as described in any one of claims 3 to 4 is implemented.

7. A differential correction data broadcasting method, applied to a differential correction data broadcasting system as claimed in any one of claims 1 to 2, characterized in that: The differential correction data broadcasting method comprises the following steps: Power-on steps: When the base station is powered on, the base station enables both the built-in radio and the cellular network; Connection steps: The base station automatically connects to the data center via the cellular network; Status uploading step: the base station uploads the status information of the base station in real time through the cellular network; the status information of the base station includes the body number of the base station, the differential data format of the base station, the mounting point of the base station, the radio protocol of the base station and the radio channel of the base station; Broadcasting step: the base station receives the decision result sent by the data center, and sends the differential correction data according to the decision result; when the communication data link in the decision result is a cellular network, the base station sends the differential correction data to the data center, and sends the differential correction data to the mobile station through the data center; when the communication data link in the decision result is a built-in radio station, the base station sends the differential correction data to the mobile station by broadcasting according to a fixed frequency.

8. A differential correction data broadcasting device, comprising a memory and a processor, wherein the memory stores a differential correction data broadcasting program that can be run on the processor, and the differential correction data broadcasting program is a computer program, characterized in that: When the processor executes the differential correction data broadcasting program, a differential correction data broadcasting method as claimed in claim 7 is implemented.

9. A storage medium, the storage medium being a computer-readable storage medium, storing a differential correction data broadcasting program thereon, the differential correction data broadcasting program being a computer program, characterized in that: When the differential correction data broadcasting program is executed by a processor, a differential correction data broadcasting method as claimed in claim 7 is implemented.

10. A method for broadcasting differential correction data, applied to a differential data correction broadcasting system as claimed in any one of claims 1 to 2, characterized in that: The differential correction data broadcasting method comprises the following steps: Power-on steps: When the mobile station is powered on, the mobile station simultaneously enables the cellular network and the built-in radio; Connection steps: The mobile station automatically connects to the data center through the cellular network; Upload step: The mobile station uploads the status information of the mobile station to the data center in real time; Data receiving step: the mobile station receives the decision result sent by the data center, and receives the differential correction data sent by the reference station according to the decision result; when the communication data link in the decision result is a cellular network, the mobile station receives the differential correction data sent by the reference station through the data center; when the communication data link in the decision result is a built-in radio, the mobile station receives the differential correction data broadcasted by the reference station through the built-in radio; the status information of the mobile station includes the body number of the mobile station and the body number of the reference station to be connected; Positioning steps: Position yourself based on the received differential correction data.

11. A differential correction data broadcasting method according to claim 10, characterized in that: The data receiving step also includes: the mobile station receives the differential data format of the reference station to be connected, the mounting point of the reference station, the radio protocol of the reference station and the radio channel of the reference station sent by the data center.

12. A differential correction data broadcasting device, comprising a memory and a processor, wherein the memory stores a differential correction data broadcasting program that can be run on the processor, and the differential correction data broadcasting program is a computer program, characterized in that: When the processor executes the differential correction data broadcasting program, a differential correction data broadcasting method as described in any one of claims 10-11 is implemented.

13. A storage medium, the storage medium being a computer-readable storage medium, storing a differential correction data broadcasting program thereon, the differential correction data broadcasting program being a computer program, characterized in that: When the differential correction data broadcasting program is executed by a processor, a differential correction data broadcasting method as described in any one of claims 10-11 is implemented.

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