CN109116380A - A kind of GNSS receiver, positioning system and method based on GNSS receiver - Google Patents

Abstract

Positioning system and method the invention discloses a kind of GNSS receiver, based on GNSS receiver.The GNSS receiver includes: GNSS board, GNSS antenna and master control borad, and GNSS board is communicated to connect with GNSS antenna and master control borad respectively；GNSS antenna acquires the wireless signal of satellite, and transmits radio signals to GNSS board；GNSS board generates original receiver location information according to wireless signal；After master control borad reception carrys out the Location Request of self terminal, original receiver location information is sent to terminal；Master control borad receives the difference information that the station CORS of terminal forwarding is generated according to original receiver location information, and difference information is sent to GNSS board；GNSS board generates revised receiver location information according to difference information.Realization of the embodiment of the present invention reduces costs and easy to carry while high accuracy positioning.

Description

A GNSS receiver, GNSS receiver-based positioning system and method

technical field

Embodiments of the present invention relate to positioning technologies, and in particular, to a GNSS receiver, and a positioning system and method based on the GNSS receiver.

Background technique

RTK (Real-time Kinematic, carrier differential technology) is a differential technology that processes the carrier phase measurement of two measuring stations in real time. It can provide the three-dimensional positioning results of the measuring stations in the specified coordinate system in real time, and reach centimeter-level or even millimeter-level. positioning accuracy. Based on this, RTK-based receivers (RTK receivers for short) are widely used in the fields of navigation and mapping.

In the prior art, in the case of high-precision measurement, the RTK receiver usually uses the network 1+1 or radio 1+1 working mode, that is, assuming that an RTK receiver is used as a base station, the differential transmission is sent through the network or radio. Data, another RTK receiver used for receiving as a mobile station, directly receives the differential data for calculation, and obtains positioning information; Station) The station receives the differential data for calculation, and obtains the positioning information. Although the above can achieve high-precision positioning, RTK equipment is expensive.

For most of the scenarios in life that do not require high-precision positioning requirements, using RTK equipment for positioning is not worth the gain. At the same time, ordinary terminals cannot meet the use requirements because the positioning accuracy is too low. Based on this, it is necessary to study the above problems, so as to reduce the cost of positioning equipment on the premise of meeting the requirements of the scene on the positioning accuracy.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a GNSS receiver, and a positioning system and method based on the GNSS receiver, so as to achieve high-precision positioning while reducing costs.

In a first aspect, an embodiment of the present invention provides a GNSS receiver, the GNSS receiver includes: a GNSS board, a GNSS antenna, and a main control board, the GNSS board is respectively connected to the GNSS antenna and the main control board Communication connection, where:

The GNSS antenna collects the wireless signal of the satellite, and sends the wireless signal to the GNSS board; the GNSS board generates original positioning information according to the wireless signal;

After receiving the positioning request from the terminal, the main control board sends the original receiver positioning information to the terminal; the main control board receives the CORS station forwarded by the terminal and generates the original positioning information according to the original positioning information. Differential information, and send the differential information to the GNSS board;

The GNSS board generates corrected receiver positioning information according to the differential information.

Further, the method further includes: the GNSS board card sends the corrected receiver positioning information to the terminal through the main control board.

Further, the GNSS receiver further includes a communication module, and the communication module is used for establishing a communication connection between the main control board and the terminal.

Further, the communication module includes a Bluetooth unit, and the Bluetooth unit is used for establishing a wireless communication connection between the main control board and the terminal.

Further, the communication module further includes a USB unit, and the USB unit is used for establishing a wired communication connection between the main control board and the terminal.

Further, the GNSS receiver further includes a power module, and the power module is respectively connected with the GNSS board, the GNSS antenna, the main control board and the communication module and provides power for them.

In a second aspect, an embodiment of the present invention further provides a positioning system based on a GNSS receiver, where the positioning system includes the GNSS receiver described in the embodiment of the present invention.

Further, the positioning system further includes a terminal, and the terminal is connected in communication with the main control board;

The terminal sends a positioning request to the main control board, receives the original receiver positioning information generated by the GNSS board forwarded by the main control board and collects the wireless signal of the satellite according to the received GNSS antenna, and transmits the original receiver positioning information. The original receiver positioning information is sent to the CORS station, the differential information generated by the CORS station according to the original receiver positioning information is received, and the differential information is sent to the main control board.

In a third aspect, an embodiment of the present invention further provides a positioning method based on a GNSS receiver, which is applied to the GNSS receiver described in the embodiment of the present invention, and the positioning method includes:

Collect the wireless signal of the satellite through the GNSS antenna, and send the wireless signal to the GNSS board;

Generate original receiver positioning information according to the wireless signal through the GNSS board;

After receiving the positioning request from the terminal through the main control board, obtain the original receiver positioning information from the GNSS board, send the original receiver positioning information to the terminal, and receive the terminal forwarding The CORS station generates differential information according to the original receiver positioning information, and sends the differential information to the GNSS board;

The corrected receiver positioning information is generated according to the differential information through the GNSS board.

Further, after the modified receiver positioning information is generated by the GNSS board according to the differential information, the method further includes:

Send the corrected receiver positioning information to the main control board through the GNSS board;

The corrected receiver positioning information is sent to the terminal through the main control board and displayed on the terminal.

In the embodiment of the present invention, the wireless signal of the satellite is collected by the GNSS antenna, and the wireless signal is sent to the GNSS board. The GNSS board generates the original receiver positioning information according to the wireless signal. After the main control board receives the positioning request from the terminal, the original The receiver positioning information is sent to the terminal, and the main control board receives the differential information generated by the CORS station based on the original receiver positioning information forwarded by the terminal, and sends the differential information to the GNSS board. The receiver positioning information solves the problems of complex structure, high cost and inconvenience of portability of the GNSS receiver in the prior art, and realizes high-precision positioning while reducing the cost.

Description of drawings

1a is a schematic structural diagram of a GNSS receiver in Embodiment 1 of the present invention;

1b is a schematic structural diagram of a positioning system based on a GNSS receiver in Embodiment 1 of the present invention;

1c is a schematic structural diagram of a login interface of an application in Embodiment 1 of the present invention;

1d is a schematic structural diagram of a prototype of a GNSS receiver in Embodiment 1 of the present invention;

1e is a schematic diagram of a communication connection between a GNSS receiver and a terminal in Embodiment 1 of the present invention;

2 is a schematic diagram of a page displaying original receiver positioning information according to Embodiment 2 of the present invention;

FIG. 3 is a flowchart of a positioning method based on a GNSS receiver in Embodiment 3 of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

Example 1

FIG. 1a is a schematic structural diagram of a GNSS receiver according to Embodiment 1 of the present invention. This embodiment is applicable to a situation where a GNSS receiver is used for positioning. As shown in FIG. 1a, the GNSS receiver 1 may specifically include: The board 11, the GNSS antenna 12 and the main control board 13, the GNSS board 11 is respectively connected to the GNSS antenna 12 and the main control board 13 for communication. Figure 1b shows a schematic diagram of the structure of the positioning system based on the GNSS receiver. The following is combined with Figure 1b Its structure and function are explained.

The GNSS antenna 12 collects the wireless signal of the satellite, and sends the wireless signal to the GNSS board 11; the GNSS board 11 generates the original receiver positioning information according to the wireless signal.

After receiving the positioning request from the terminal 2, the main control board 13 sends the original receiver positioning information to the terminal 2; the main control board 13 receives the differential information generated by the GORS station forwarded by the terminal 2 according to the original receiver positioning information, and sends The differential information is sent to the GNSS board 11 .

The GNSS board 11 generates corrected receiver positioning information according to the differential information.

In the embodiment of the present invention, the Global Navigation Satellite System (GNSS) uses BDS (BeiDou Navigation Satellite System, Beidou Satellite Navigation System), GPS (Global Positioning System, Global Navigation System), GLONASS (Global Navigation Satellite System) , Global Satellite Navigation System) and GALILEO (Galileo Satellite Navigation System, Galileo Satellite Navigation System) and other satellite positioning systems, combined with regional differential and wide-area augmentation systems, etc., provide global real-time, all-weather navigation and positioning services. A GNSS receiver is a radio receiving device that can receive, track, transform and measure GNSS satellite navigation and positioning signals. It has both the commonality of radio receiving devices and the characteristics of capturing, tracking and processing weak GNSS satellite signals. The main job of the GNSS receiver is to most accurately capture the satellite signals to be measured selected by a certain satellite altitude cut-off angle, track the basic running trajectories of these satellites, and perform signal processing such as transforming and amplifying the received satellite signals. Based on the measurement and calculation of the propagation time of the satellite signal from the satellite to the GNSS receiver, the navigation message sent by the GNSS satellite is compiled, and the actual three-dimensional position, speed and usage time of the GNSS receiver are calculated. The GNSS receiver can simultaneously receive satellite signals of multiple navigation systems. Users can choose the positioning method according to their own needs, or use multi-satellite joint positioning. In order to improve the positioning accuracy of the GNSS receiver, CORS technology can be used. Among them, CORS is a new satellite positioning technology based on comprehensive disciplines such as earth space technology, electronic science, computer technology, network technology and communication technology. The basic principle of CORS is to use GNSS positioning and navigation technology to establish several fixed GNSS reference stations in continuous operation according to a certain distribution density within the required coverage area, and use network and communication technology to connect each reference station, reference station and data. The processing centers are organically connected. The data processing center analyzes, processes, calculates and stores the observation data uploaded by the reference station, establishes a system model, generates differential information, transmits and distributes it for users to use, and then provides raw materials to various users. The GNSS receiver positioning information and the corrected GNSS receiver positioning information. Among them, the data processing center is the core part of CORS, which can specifically include a user management unit and a data processing unit. While managing and maintaining data, it also effectively manages users. When users need to use CORS for production operations, they can send the original GNSS receiver positioning information to the CORS station. The CORS station determines the position of the GNSS receiver according to the original GNSS receiver positioning information, and automatically virtualizes the reference station around the position. The reference station combination includes at least one reference station. According to the combined observation data, the original receiver positioning information is subjected to differential processing to obtain differential information, and the differential information is sent to the GNSS receiver. The GNSS receiver then compares the differential After solving the information, the corrected receiver positioning information can be obtained. The network RTK technology is based on the CORS system, and realizes the high-precision differential positioning function through the mathematical model. At present, according to different mathematical algorithms, a variety of network RTK technologies have been produced, including VRS (Virtual Reference Staion, virtual reference station), MAC (Master-Auxiliary Concept, master and auxiliary station), FKP, CBI and joint single reference station, etc. .

It should be noted that the data interaction between the CORS station and the GNSS receiver here can be realized directly through the GNSS receiver, or through a third-party device (such as a terminal), depending on whether the GNSS receiver has the ability to communicate with the CORS station. interactive function. In other words, the specific implementation is related to the structure of the GNSS receiver. Of course, in order to simplify the structural complexity of the GNSS receiver, an implementation that cooperates with a third-party device (such as a terminal) may be considered. The technical solution of the embodiment of the present invention will implement the data interaction between the GNSS receiver and the CORS station by cooperating with a third-party device (such as a terminal). The GNSS receiver will be further described below, specifically:

The GNSS receiver 1 may specifically include a GNSS board 11 , a GNSS antenna 12 and a main control board 13 , wherein the GNSS board 11 is connected in communication with the GNSS antenna 12 and the main control board 13 respectively. The GNSS antenna 12 collects the wireless signal of the satellite, and sends the wireless signal to the GNSS board 11, and the GNSS board 11 generates the original receiver positioning information according to the wireless signal. That is, the GNSS antenna 12 cooperates with the GNSS board 11 to convert the satellite signals collected by the GNSS antenna 11 into original receiver positioning information. Specifically, after the GNSS antenna 12 receives the wireless signal from the satellite, it transmits the wireless signal to the radio frequency input end of the GNSS board 11 through the feeder, and the satellite signal is amplified, filtered, down-converted and other operations to generate an intermediate frequency suitable for analog conversion. After receiving the IF signal, the analog-to-digital converter in the GNSS board 11 digitizes it, and outputs a certain number of digital signals to the baseband processing chip of the GNSS board 11. The baseband processing chip performs a series of IF signals on the IF signal. Digital signal processing to recover the original receiver positioning information. The original receiver positioning information may specifically include longitude information, latitude information, and altitude information. The wireless signal may specifically include a carrier signal, a pseudo-random code, a navigation message, and the like. The carrier signal is used to modulate the pseudo-random code and the navigation message; the pseudo-random code is a sequence of "on" and "off" pulses, which is generated by the satellite and sent to the GNSS receiver to modulate the navigation message to form a combined code, namely the C/A code and P codes; navigation messages are low-frequency signals about satellite orbits, clock corrections, and other system status information. In addition, it should be noted that the state information of the captured satellites can also be obtained through the analysis of the above-mentioned wireless signals by the GNSS board 11, which may specifically include the number of captured satellites, satellite numbers, and satellite names.

In order to obtain positioning information with higher accuracy, according to the above, CORS technology can be used. Specifically, the original receiver positioning information can be sent to the CORS station, the differential information can be obtained from the CORS station, and the GNSS receiver 1 can then use the differential information according to the differential information. Generates corrected receiver positioning information. That is, data interaction between the GNSS receiver 1 and the CORS station is required, and in order to simplify the structural complexity of the GNSS receiver, an implementation manner of cooperating with the terminal 2 is adopted. Specifically: after receiving the positioning request sent by the terminal 2, the main control board 13 obtains the original receiver positioning information from the GNSS board 11, sends the original receiver positioning information to the terminal 2, and receives the forwarding information from the terminal 2. The CORS station generates differential information according to the original receiver positioning information, and sends the differential information to the GNSS board 11 . That is, when higher-precision positioning information needs to be obtained, a positioning request can be sent to the main control board 13 through the terminal 2, wherein the positioning request is used to obtain the original receiver positioning information generated by the GNSS board 11, and the main control board 13 receives After the positioning request is received, the original receiver positioning information is obtained from the GNSS board 11, and the original receiver positioning information is sent to the terminal 2, and the terminal 2 sends the original receiver positioning information to the CORS station. The CORS station The received original receiver positioning information is processed to obtain differential information, and the differential information is sent to terminal 2. Terminal 2 sends the received differential information to the main control board 13, and the main control board 13 then sends the differential information Give 11 to the GNSS board. It can be seen that the main control board 13 plays the role of data interaction with the terminal 2, and the terminal 2 plays the role of data interaction with the CORS station, thereby realizing the data interaction between the GNSS receiver 1 and the CORS station through the terminal 2.

It should be noted that the data interaction between the terminal 2 and the CORS station can be realized in the following ways: the user purchases an account to connect to the CORS station from the CORS station administrator in advance, and the system administrator of the CORS station provides the user with an IP address while giving the account number. and port number. The user can log in to the CORS station through the relevant application program on the terminal 2, and then send the original receiver positioning information to the CORS station. During the login process, it is usually necessary to fill in the relevant login information, where the login information can specifically refer to the IP address, port number and a user account, wherein the user account includes a user name and a password. In other words, the user can generate login information by entering the IP address, port number, and user account (namely, user name and password) into the login interface of the application program on Terminal 2, as shown in Figure 1c, which shows the login of the application program Schematic diagram of the interface structure. After the login is successful, the original receiver positioning information is sent to the CORS station through the wireless network or mobile network. Similarly, the CORS station can also send the differential information generated according to the original receiver positioning information to the terminal 2 through the wireless network or the mobile network, so as to realize the data interaction between the terminal 2 and the CORS station.

It should be noted that the terminal 2 may be a mobile terminal, for example, a mobile phone or a tablet computer. The specific selection can be made according to the actual situation, which is not specifically limited here.

The GNSS board 11 calculates the received differential information sent by the main control board 13, and generates corrected receiver positioning information. The positioning accuracy of the corrected receiver positioning information is higher than that of the original receiver positioning information. a substantial increase. Through the above process, positioning information with higher accuracy is obtained.

Compared with the prior art, by simplifying the structure of the GNSS receiver, the manufacturing cost is reduced, so that the GNSS receiver is small in size, light in weight, and easy to carry. At the same time, the terminal is used as a forwarder to realize the data interaction with the CORS station, which achieves the same positioning accuracy as the original GNSS receiver. In addition, because the human-computer interaction interface is implemented in the terminal, the operation is friendly.

In the technical solution of this embodiment, the wireless signal of the satellite is collected through the GNSS antenna, and the wireless signal is sent to the GNSS board. The GNSS board generates the original receiver positioning information according to the wireless signal. After the main control board receives the positioning request from the terminal , send the original receiver positioning information to the terminal, the main control board receives the differential information generated by the CORS station forwarded by the terminal according to the original receiver positioning information, and sends the differential information to the GNSS board, which generates the differential information based on the The corrected receiver positioning information solves the problems of complex structure, high cost and inconvenience of portability of the GNSS receiver in the prior art, and realizes high-precision positioning while reducing the cost.

Optionally, on the basis of the above technical solution, it may further include: the GNSS board 11 sends the corrected receiver positioning information to the terminal 2 through the main control board 13 .

In the embodiment of the present invention, the GNSS board 11 can send the corrected receiver positioning information to the main control board 13, and the main control board 13 sends the corrected receiver positioning information to the terminal 2, so that the terminal 2 The corrected receiver positioning information is displayed, so that the user can know the corrected receiver positioning information through the terminal 2 .

Optionally, as shown in FIG. 1 b , on the basis of the above technical solution, a communication module 14 may be specifically included, and the communication module 14 is used for establishing a communication connection between the main control board 13 and the terminal 2 .

In the embodiment of the present invention, the GNSS receiver 1 may further include a communication module 14 , where the communication module 14 may be used to establish a communication connection between the main control board 13 and the terminal 2 . The communication connection may be a wireless communication connection, such as Bluetooth, Wi-Fi (Wireless Fidelity, wireless fidelity) or ZigBee, etc.; it may also be a wired communication connection, such as USB (Universal Serial Bus, Universal Serial Bus) and the like. The specific implementation manner can be set according to the actual situation, which is not specifically limited here.

Optionally, as shown in FIG. 1 b , based on the above technical solution, the communication module 14 may specifically include a Bluetooth unit 141 , and the Bluetooth unit 141 is used for establishing a wireless communication connection between the main control board 13 and the terminal 2 .

In the embodiment of the present invention, the communication module 14 may specifically include a Bluetooth unit 141 , where the Bluetooth unit 141 may be used to establish a wireless communication connection between the main control board 13 and the terminal 2 .

Optionally, as shown in FIG. 1 b , based on the above technical solution, the communication module 14 may further include a USB unit 142 , and the USB unit 142 is used for establishing a wired communication connection between the main control board 13 and the terminal 2 .

In the embodiment of the present invention, the communication module 14 may further include a USB unit 142 , where the USB unit 142 may be specifically used to establish a wired communication connection between the main control board 13 and the terminal 2 .

Optionally, as shown in FIG. 1b, on the basis of the above technical solution, a power supply module 15 may be included, and the power supply module 15 is respectively connected with the GNSS board 11, the GNSS antenna 12, the main control board 13 and the communication module 14. provide power for it.

In the embodiment of the present invention, the GNSS receiver 1 may further include a power supply module 15, wherein the power supply module 15 is respectively connected with the GNSS board 11, the GNSS antenna 12, the main control board 13 and the communication module 14, and is the The module provides power. That is, the power module 15 is used to provide power for the GNSS receiver 1 . The power supply module 15 may specifically include an internal power supply unit and an external power supply unit, for example, the internal power supply unit may be a lithium battery, and the external power supply unit may be a rechargeable DC NiCd battery pack.

In addition, Fig. 1d shows a schematic diagram of a prototype structure of a GNSS receiver; Fig. 1e shows a schematic diagram of a wired communication connection between the GNSS receiver and the terminal through a USB unit.

Embodiment 2

FIG. 1b is a schematic structural diagram of a positioning system based on a GNSS receiver according to Embodiment 2 of the present invention. This embodiment is applicable to a situation where a GNSS receiver is used for positioning. As shown in FIG. 1b, the positioning system may specifically include: : GNSS receiver 1, specifically, may also include terminal 2, the structure and function of which will be described below.

The terminal 2 terminal is connected to the main control board 13 in communication.

The terminal 2 sends a positioning request to the main control board 13, receives the original receiver positioning information generated by the GNSS board 11 forwarded by the main control board 13 and collects the wireless signals of the satellite according to the received GNSS antenna 12, and locates the original receiver. The information is sent to the CORS station, the differential information generated by the CORS station according to the original receiver positioning information is received, and the differential information is sent to the main control board 13 .

In the embodiment of the present invention, as shown in FIG. 1 b , the GNSS receiver 1 may specifically include: a GNSS board 11 , a GNSS antenna 12 , a main control board 13 , a communication module 14 and a power module 15 . Each module in the GNSS receiver 1 described above is the same as each module in the GNSS receiver described in the first embodiment, and details are not repeated here.

The terminal 2 sends a positioning request to the main control board 13, and the main control board 13 obtains the original receiver positioning information from the GNSS board 11 according to the received positioning request, and sends the original receiver positioning information to the terminal 2, the terminal 2 Send the original receiver positioning information to the CORS station, the CORS station processes the original receiver positioning information to generate differential information, and sends the differential information to the terminal 2, and the terminal 2 sends the differential information to the main control board 13. The control board 13 sends the differential information to the GNSS board 11, and the GNSS board 11 calculates the differential information to generate corrected receiver positioning information. On this basis, the GNSS board 11 can send the corrected receiver positioning information to the main control board 13, and the main control board 13 sends the corrected receiver positioning information to the terminal 2, and the terminal 2 will display the corrected receiver positioning information. Receiver positioning information.

It should be noted that the original receiver positioning information can be displayed on the terminal 2. In addition, the status information of the satellites described in the first embodiment can also be displayed on the terminal 2. As shown in FIG. 2, the terminal 2 displays the original positioning information. Receiver positioning information and satellite status information. Among them, the original receiver positioning information includes longitude information "121°17'16.90881294" (east longitude)", latitude information "31°9'57.32471015" (north latitude)" and altitude information "39.176"; satellite status information includes the number of satellites , satellite number and satellite name. In addition, as shown in FIG. 2 , the terminal 2 may specifically display the type, and the type may specifically include single-point, multi-point, and to-be-tested. Among them, the positioning accuracy of a single point is lower than the positioning accuracy of multiple points, and the to-be-measured can indicate that the original receiver positioning information has not been stabilized. The terminal described here may be a mobile phone or a tablet computer, or the like.

The technical solution of this embodiment, by using the aforementioned GNSS receiver, solves the problems of complex structure, high cost and inconvenience of portability of the GNSS receiver in the prior art, and realizes high-precision positioning while reducing the cost.

Embodiment 3

FIG. 3 is a flowchart of a positioning method based on a GNSS receiver according to Embodiment 3 of the present invention. This embodiment can be applied to a situation where a GNSS receiver is used for positioning. The method can be executed by a GNSS receiver. The receiver can be implemented in software and/or hardware. As shown in Figure 3, the positioning method specifically includes the following steps:

Step 310: Collect the wireless signal of the satellite through the GNSS antenna, and send the wireless signal to the GNSS board.

Step 320 , generating original receiver positioning information according to the wireless signal through the GNSS board.

Step 330: After receiving the positioning request from the terminal through the main control board, obtain the original receiver positioning information from the GNSS board, send the original receiver positioning information to the terminal, and receive the CORS station forwarded by the terminal according to the original receiver positioning information. The differential information generated by the receiver positioning information, and the differential information is sent to the GNSS board.

Step 340: Generate the corrected receiver positioning information according to the differential information through the GNSS board.

In the embodiment of the present invention, the positioning method can be applied to the GNSS receiver described in the embodiment. First, collect the wireless signal of the satellite through the GNSS antenna, and send the wireless signal to the GNSS board; secondly, generate the original receiver positioning information according to the wireless signal through the GNSS board; then, receive the positioning request from the terminal through the main control board Then, obtain the original receiver positioning information from the GNSS board, send the original receiver positioning information to the terminal, and receive the differential information generated by the CORS station forwarded by the terminal based on the original receiver positioning information, and send the differential information to the terminal. Send it to the GNSS board; finally, the GNSS board generates the corrected receiver positioning information according to the differential information.

In the technical solution of this embodiment, the wireless signal of the satellite is collected through the GNSS antenna, and the wireless signal is sent to the GNSS board, the original receiver positioning information is generated by the GNSS board according to the wireless signal, and the positioning from the terminal is received through the main control board. After the request, the original receiver positioning information is obtained from the GNSS board, and the original receiver positioning information is sent to the terminal, and the differential information generated by the CORS station forwarded by the terminal based on the original receiver positioning information is received, and the differential The information is sent to the GNSS board, and the corrected receiver positioning information is generated by the GNSS board according to the differential information, which solves the problems of complex structure, high cost and inconvenience of the GNSS receiver in the prior art, and realizes high-precision positioning. At the same time reduce costs.

Optionally, on the basis of the above technical solution, after the positioning method of generating the corrected receiver positioning information according to the differential information through the GNSS board card, the positioning method may further include: using the GNSS board card to generate the corrected receiver positioning information. sent to the main control board. The corrected receiver positioning information is sent to the terminal through the main control board and displayed on the terminal.

In the embodiment of the present invention, in order to enable the user to know the corrected receiver positioning information through the terminal, the following method can be adopted: the generated corrected receiver positioning information is sent to the main control board through the GNSS board, and the main control The board then sends the corrected receiver positioning information to the terminal, so that the terminal can display the corrected receiver positioning information after obtaining the corrected receiver positioning information.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (10)

1. A GNSS receiver, comprising: the GNSS board card is respectively in communication connection with the GNSS antenna and the main control board; wherein,

the GNSS antenna collects wireless signals of satellites and sends the wireless signals to the GNSS board card; the GNSS board card generates original receiver positioning information according to the wireless signals;

after receiving a positioning request from a terminal, the main control board sends the original receiver positioning information to the terminal; the main control board receives differential information generated by the CORS station forwarded by the terminal according to the original receiver positioning information, and sends the differential information to the GNSS board card;

and the GNSS board card generates corrected receiver positioning information according to the difference information.

2. The GNSS receiver of claim 1, further comprising:

and the GNSS board card sends the corrected receiver positioning information to the terminal through the main control board.

3. The GNSS receiver of claim 1, further comprising a communication module, wherein the communication module is configured to establish a communication connection between the main control board and a terminal.

4. The GNSS receiver of claim 3, wherein the communication module comprises a Bluetooth unit, and the Bluetooth unit is configured to establish a wireless communication connection between the main control board and a terminal.

5. The GNSS receiver of claim 4, wherein the communication module further comprises a USB unit, and the USB unit is configured to establish a wired communication connection between the main control board and a terminal.

6. The GNSS receiver of claim 3, further comprising a power module, wherein the power module is respectively connected to the GNSS board, the GNSS antenna, the main control board and the communication module and provides power thereto.

7. A GNSS receiver based positioning system, characterized in that it comprises a GNSS receiver according to any of claims 1-6.

8. The positioning system according to claim 7, further comprising a terminal, wherein the terminal is in communication connection with the main control board;

the terminal sends a positioning request to the main control board, receives original receiver positioning information generated by the GNSS board card forwarded by the main control board according to received wireless signals of satellites acquired by the GNSS antenna, sends the original receiver positioning information to the CORS station, receives differential information generated by the CORS station according to the original receiver positioning information, and sends the differential information to the main control board.

9. A positioning method based on GNSS receiver, applied to the GNSS receiver of any of claims 1 to 6, characterized by comprising:

acquiring a wireless signal of a satellite through a GNSS antenna, and sending the wireless signal to a GNSS board card;

generating original receiver positioning information according to the wireless signals through the GNSS board card;

after receiving a positioning request from a terminal through a main control board, acquiring original receiver positioning information from the GNSS board card, sending the original receiver positioning information to the terminal, receiving differential information generated by a CORS station forwarded by the terminal according to the original receiver positioning information, and sending the differential information to the GNSS board card;

and generating corrected receiver positioning information according to the difference information through the GNSS board card.

10. The method according to claim 9, wherein after generating, by the GNSS board, the corrected receiver positioning information from the differential information, further comprising:

sending the corrected receiver positioning information to the main control board through the GNSS board card;

and sending the corrected receiver positioning information to the terminal through the main control board and displaying the receiver positioning information on the terminal.