KR101952140B1 - Precision positioning system and method for smart device with automatic adjustment of the gps receiver height - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for measuring a precise position by automatically setting a height of a GPS receiver using a smart device and a precise position measuring method using the same.
The present invention has the following effects.
In other words, without a separate controller, it can contribute to the penetration of precision measurement technology by securing price competitiveness by positioning system that can position VRS by using only user terminal such as GPS receiver and mobile phone.
In addition, by providing a configuration capable of performing position measurement using a mobile phone, it is possible to increase the usability and the weight of the apparatus, and the height of the GPS receiver can be automatically set, thereby improving convenience.
In particular, communication between the GPS receiver, the user terminal, the VRS server and the user terminal can be smoothly performed by the position measuring method of the present invention.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position measuring system and method for a smart device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for measuring a precise position by automatically setting a height of a GPS receiver using a smart device and a precise position measuring method using the same.

The Ministry of Land, Transport and Maritime Affairs has acquired 30 satellite reference points (GPS observation stations) and 2 satellite reference points installed and operated by the former Ministry of Government Administration and Home Affairs (Cadastral Division) and 26 satellite control points of the satellite navigation office As of August 2012, a total of 72 satellite control points are being provided to the general public. In the case of surveying using the position information of the satellite reference point, it is possible to quickly receive data of all the satellite reference points of the nation with one Internet connection (gps.ngii.go.kr), and the virtual Real-time accurate position information can be obtained through the Network-RTK (Real Time Kinematic) system, which is a one-person survey system using VRS (Virtual Reference Station).

The basic equipment for VRS positioning consists of two or more GPS (GNSS) receivers, a controller and a VRS-accessible mobile phone. In other words, a controller 500 for communicating with the GPS receiver as shown on the left side of FIG. 7 is additionally required in addition to a cell phone for transmitting the position of the surveying point to the VRS server and transmitting the correction value to the center. While these controllers are very expensive, the actual hardware performance does not fit into mobile phones, and there is a problem of poor compatibility and usability. Therefore, by solving the configuration as shown in the right side of FIG. 7, the problem associated with the controller is solved.

Registration No. 10-1575848 (Feb. 20, 2015)

The present invention aims to solve the following problems.

In other words, we propose a position measurement system capable of VRS positioning using only a user terminal such as a GPS receiver and a mobile phone without a separate controller.

In particular, a position measurement method capable of smooth communication between a GPS receiver, a user terminal, and a VRS server and a user terminal is proposed.

In order to solve the above problems,

A GPS receiver 100 located at the top of a cradle at a predetermined height vertically installed on the ground, for receiving a GPS signal from a satellite and extracting the NMEA data 111a and transmitting the extracted NMEA data 111a to the user terminal 200; A geographic information source server 300 receiving the GPGGA data 212a from the user terminal 200 and generating VRS data 311a at the position of the GPS receiver 100; Extracts the GPGGA data 212a from the NMEA data 111a received from the GPS receiver 100 and transmits the extracted GPGGA data 212a to the geographic information source server 300 and receives the VRS data 311a from the geographic information source server 300, The VRS data 311a includes a VRS data 311a for generating the correction data 111b corrected by the VRS data 311a and extracting the longitude data 211a, GPGGA is Fix Data which includes GPS time, latitude, longitude, and altitude information. Fix type includes "Single" and "Fixed", and Single has GPS provided by GPS And the correction is a form in which correction signals of the fixed reference station (RTK) and the virtual reference station (VRS) are received in accordance with the precision after calculation, and the correction data (111b) Fixed or unified according to Fix Data, The user terminal 200 includes a setting screen 221 for connecting with the GPS receiver 100 and setting an observation environment and an observation screen 222 for outputting the longitude data 211a corresponding to the GPS receiver 100 position And an observation control module 220. The setting screen 221 outputs a list of devices connectable by the short range communication unit 211 and includes an equipment connection unit 221a for performing a connection by a short distance communication with the selected equipment A coordinate system setting unit 221b for changing a coordinate system setting including a geoid application type, a geoid application type, whether or not the precision is applied, precision, whether or not the critical angle is applied, a critical altitude angle, A GPS setting unit 221c for changing a setting including a measurement solution for selecting a fixed height or a single height, a network setting unit 221d for changing settings including an IP setting, a user ID and a password, , And an observation screen switching unit 221e for switching from the setting screen 221 to the observation screen 222. The equipment connection unit 221a, the coordinate system setting unit 221b, the GPS setting unit 221c, The observation screen switching section 221e is constituted by a button formed on one side of the setting screen 221 and the observation screen 222 is displayed by the user terminal 200 in the GPS receiver 100 And an observation start button 222a for starting communication with the geographic information source server 300 and starting the position observation of the GPS receiver 100 by receiving the correction data 111b, A measurement history confirmation unit 222c for outputting the history of the extracted longitude and latitude data 211a in text form, a storage button 222b for storing the data 211a, a longitude and latitude data 211a ) ≪ RTI ID = 0.0 > map < / RTI > When the communication with the geographical information source server 300 is interrupted by the user terminal 200, the GPGGA data 212a (212a) received by the GPS receiver 100 and the unadjusted GPGGA data 212a And an observation end button 222f for stopping the observation of the position of the GPS receiver 100 by interrupting the communication of the user terminal 200. The measurement details 222a, The display unit 222b and the observation end button 222f are arranged on one screen so that the main function is displayed without entering the other menu in the measurement situation And the observation start button 222a is switched to the observation end button 222f while the user terminal 200 operates the geographic information source server 300 ), Stops the communication with the observation start buffer The NMEA data 111a is transmitted from the GPS receiver 100 to the user terminal 200 while the GPGGA data 212a is transmitted from the user terminal 200 to the geographic information source server 300 The VRS data 311a is transmitted from the geographic information server 300 to the user terminal 200 and the correction data 111b is generated from the user terminal 200. The GPS setting unit 221c sets The NMEA data 111a is configured such that the NMEA data 111a does not store the GPGGA data, the GPGSV data, and the GPRMC data, And the local communication unit 211 of the user terminal 200 and the local communication unit 111 of the GPS receiver 100 are configured as a Bluetooth module and the Internet communication unit 212 is configured as a TCP / IP module, (221b) indicates whether or not geoid application, A datum and a coordinate system can be changed in addition to the type of the GPS receiver 100. In the cradle in which the GPS receiver 100 is installed, a recognition unit composed of a QR code or an NFC module is provided at a position where the user terminal can reach When the information of the recognition unit is read by the user terminal, height information of the cradle is inputted to the user terminal, and the height of the receiver is automatically changed in the observation control module 220,
The GPS receiver 100 includes a communication module 110 for transmitting the NMEA data 111a to the user terminal 200 by the short range communication unit 111,
The user terminal 200 receives the NMEA data 111a from the GPS receiver 100 by the short range communication unit 211 and transmits the NMEA data 111a and the VRS data 311a via the Internet communication unit 212 to the geographic information source And a communication module 210 for transmitting and receiving data to and from the server 300,
The distance to the target point from the current longevity data 211a when the target point for the stakeout of coordinates is entered on the observation screen 222 by numerical values and the direction to the target point is displayed on the observation screen 222 from the current position to the target point The user strikes the coordinates by inducing the user having the user terminal 200 to move to the target point. If the remaining distance is less than the predetermined distance, the circle surrounding the current position and the target point is displayed on the observation screen 222 ) To indicate that it is a precision staking mode, or a precision position measurement system for a smart device of a height automatic setting system, or
The precise position measurement method using the precise position measurement system includes a step (s1) of extracting NMEA data from a GPS signal received from a satellite in a GPS receiver and transmitting the extracted NMEA data to a user terminal through short-distance communication; Extracting GPGGA data from the NMEA data at the user terminal and transmitting the GPGGA data to the VRS server of the geographic information source (s2); Generating VRS data corresponding to the GPGGA received from the VRS server and transmitting the data to the user terminal (s3); A step (s4) of correcting the NMEA data using the VRS data received from the user terminal and calculating correction accuracy to generate corrected NMEA data; Extracting the GPGGA data from the corrected NMEA data in the user terminal and outputting the latitude value to the screen (s5).

The present invention has the following effects.

In other words, without a separate controller, it can contribute to the penetration of precision measurement technology by securing price competitiveness by positioning system that can position VRS by using only user terminal such as GPS receiver and mobile phone.

In addition, by providing a configuration capable of performing position measurement using a mobile phone, it is possible to increase the usability and the weight of the apparatus, and the height of the GPS receiver can be automatically set, thereby improving convenience.

In particular, communication between the GPS receiver, the user terminal, the VRS server and the user terminal can be smoothly performed by the position measuring method of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram showing the overall configuration and data flow of the present invention.
2 is an exemplary view of a setting screen of a user terminal;
FIG. 3 is an exemplary view of a screen displayed when a configuration is selected in the setting screen of FIG. 2; FIG.
4 is an exemplary view of an observation screen of a user terminal;
5 is an exemplary view of an observation screen when coordinate staking is performed;
6 is an exemplary view of a screen (left side) by a measurement history verifying unit and a screen (right side) by a map screen switching unit;
Fig. 7 is a diagram showing a comparison of the configuration of a VRS positioning apparatus according to the conventional method (left side) and the present invention (right side).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the scope of the present invention should be understood from the description of the claims. Further, the description of known technology which obscures the gist of the present invention is omitted.

Prior to the description, the terms referred to in the present invention are summarized as follows.

The National Marine Electronics Association (NMEA) means a signal format used in GPS, and includes data such as GPGGA, GPGSV, and GPRMC.

GPGGA (Global Positioning System Fixed Data) is fix data that GPS sends, and the most common ones are time, latitude, longitude, and altitude.

The fix type of fix includes "single", "fixed", "flow", and the meaning is as follows.

&Quot; Single " means a case where the calculation is performed only with the satellite provided by the GPS.

&Quot; Fixed " is a form that is received according to the correction signal of the fixed reference station (RTK) or the virtual reference station (VRS) and expressed according to the precision after calculation. Mainly this data is recognized as accurate and necessary data.

&Quot; Flow " is a form that is received according to the correction signal of the fixed reference station (RTK) or the virtual reference station (VRS) and expressed according to the precision after calculation.

GPS Satellites in View (GPGSV) is not the satellite used for the calculation, but is all the satellite information (number of visible satellites, etc.) visible at the current location.

GPRMC is the minimum recommended data, also referred to as Recommended Minimum data, which may include time, latitude and longitude as well as GPGGA.

The present invention relates to a VRS-based precision position measurement system, and is composed of a GPS receiver 100, a user terminal 200 and a geographical information source server 300 as shown in FIG.

The GPS receiver 100 is located at the upper end of the cradle at a predetermined height vertically installed on the ground. The GPS receiver 100 receives the GPS signal from the satellite and extracts the NMEA data 111a and transmits the NMEA data 111a to the user terminal 200. It is installed at the position to be measured.

The height of the cradle can be input and changed in the observation control module 220, which will be described later, and input to calculate a more accurate altitude. On the other hand, when a recognition unit such as a QR code or an NFC module is preliminarily provided at a position where the user terminal can reach, and the user can read the information of the recognition unit, such as photographing a QR code or touching an NFC module, May be input to the user terminal and automatically changed by the observation control module 220. [

The NMEA data 111a is unprocessed data including all the data such as GPGGA, GPGSV, and GPRMC.

The GPS receiver 100 includes a communication module 110 for transmitting the NMEA data 111a to the user terminal 200 by the short range communication unit 111. [

The geographic information server 300 receives the NMEA data 111a or the GPGGA data 212a extracted from the NMEA data 111a from the user terminal 200 and generates the VRS data 311a at the GPS receiver 100 position.

However, if the entire NMEA data 111a is to be transmitted to the geographic information source server 300 in the form of packets, the uploading operation may not be performed smoothly because a large amount of data and unnecessary information are included. Therefore, it is preferable to extract GPGGA data 212a from the NMEA data 111a from the user terminal 200, and then transmit the GPGGA data 212a to the geospatial information server 300. [

The VRS data 311a is used to correct the position of the NMEA data 111a extracted by the GPS receiver 100 including the virtual reference station position of the GPS receiver 100. [

The user terminal 200 is a terminal carried by a user carrying the GPS receiver 100 or measuring the position of the GPS receiver 100 in the vicinity of the fixed GPS receiver 100 and may be a smart phone, The same is true for smart devices.

The user terminal 200 receives the NMEA data 111a from the GPS receiver 100 and transmits the NMEA data 111a to the geographic information source server 300 or extracts the GPGGA data 212a from the NMEA data 111a, Receives the VRS data 311a from the geographic information source server 300 and generates correction data 111b corrected by the VRS data 311a and extracts the longitude data 211a. A communication module 210 and an observation control module 220. At this time, the correction data 111b is characterized in that the correction precision is calculated and fixed, flowed, or unified according to the fix data of the GPGGA data.

The communication module 210 receives the NMEA data 111a from the GPS receiver 100 and transmits the NMEA data 111a or the GPGGA data 212a extracted therefrom to the VRS data 311a To and from the geographic information server 300. [

(In this case, the local communication unit 111 of the GPS receiver 100 may also be a Bluetooth module), and the Internet communication unit 212 may be a TCP / IP module.

2 and 4, the observation control module 220 outputs a setting screen 221 for connecting with the GPS receiver 100 and setting an observation environment and the lunarity data 211a corresponding to the position of the GPS receiver 100 And an observation screen 222 in which an image is displayed. An application may be installed in the user terminal 200 and the application may be implemented.

2, the setting screen 221 includes an equipment connection unit 221a, a coordinate system setting unit 221b, a GPS setting unit 221c, a network setting unit 221d, and an observation screen switching unit 221e.

The screen displayed when each configuration is selected is shown in FIG.

The device connection unit 221a outputs a list of devices connectable by the device connection unit 221a and performs a connection by a short distance communication with the selected device. For example, in the case of the Bluetooth communication method, a nearby GPS receiver 100 capable of Bluetooth communication is outputted as shown in FIG. 3A, and performs a pairing operation with the GPS receiver 100 selected here. For details, a normal Bluetooth connection method can be applied.

The coordinate system setting unit 221b is configured to change the setting of the projection origin, the datum, the coordinate system, the application of the geoid, and the type of the geoid as shown in FIG. 3 (b).

The GPS setting unit 221c is configured to change settings such as accuracy application, accuracy, application of the critical altitude angle, critical altitude angle, receiver height, survey solution, and satellite type as shown in Fig. The accuracy set by the GPS setting unit 221c is a criterion for data storage on the observation screen 222. [ The critical altitude angle refers to the angle at which the satellite signal is received, and the receiver height is the height of the mount where the GPS receiver 100 is installed. Survey solution is fixed / flow / single, and it is possible to prevent user error by making it impossible to try to make a flow or a single settlement by measuring the whole after it is set as fixed as necessary but fixed.

The network setting unit 221d is configured to change one or more of the IP setting, the user ID, and the password as shown in Fig. 3 (d). Since the user must use the ID after joining the ID of the National Territorial Geographic Information Service, the user ID and the password for accessing the VRS server of the geographic information server can be set.

The observation screen switching section 221e is a button for switching from the setting screen 221 to the observation screen 222. When the observation screen switching section 221e is touched on the setting screen 221 of FIG. 2, The screen 222 is switched to.

The equipment connection unit 221a, the coordinate system setting unit 221b, the GPS setting unit 221c and the network setting unit 221d are menus configured as tabs. When the respective components are implemented on one screen, it is possible to provide an intuitive interface and improve the user's operational convenience.

4, the observation screen 222 includes an observation start button 222a, a storage button 222b, a measurement history confirmation unit 222c, a map screen switching unit 222d, a coordinate output unit 222e, And an end button 222f. However, each configuration can be selectively arranged on one screen, such as a configuration in which the observation start button 222a is switched to the observation end button 222f. That is, the measurement history confirmation unit 222c, the map screen switching unit 222d, the coordinate output unit 222e, the storage button 222b, and the observation end button 222f are arranged on one screen as shown in the right side of Fig. 4 It is to increase the usability by manipulating the main functions in one screen without entering the other menu in the situation.

The observation start button 222a allows the user terminal 200 to start communication with the GPS receiver 100 and the geographic information source server 300 and start the position observation of the GPS receiver 100 by receiving the correction data 111b Button. That is, the NMEA data 111a is transmitted from the GPS receiver 100 to the user terminal 200 while the observation start button 222a is touched, and the GPGGA data (data) is transmitted from the user terminal 200 to the geographic information source server 300 The VRS data 311a is transmitted from the geographic information source server 300 to the user terminal 200 and the correction data 111b is generated from the user terminal 200. [

The storage button 222b is a button for storing the longevity data 211a extracted from the current correction data 111b. If the accuracy setting is set in the GPS setting unit 221c as described above, It is possible to configure not to perform the storage even if the button 222b is pressed. Therefore, it is possible to reduce a portion in which a user may cause an error when storing data.

The measurement history confirmation unit 222c outputs a history of the extracted longitude data 211a in the form of a text. When the measurement history confirmation unit 222c is selected, the measurement history confirmation unit 222c outputs a text list as shown in FIG. 6, can confirm.

The map screen switching unit 222d outputs a map photograph corresponding to the position of the longitude and latitude data 211a on the background of the observation screen 222. The current position can be confirmed together with the satellite map as shown in the right side of FIG. For example, Google maps.

The coordinate output unit 222e outputs the latitude and longitude data 211a in real time. When the communication with the geographical information source server 300 is interrupted by the user terminal 200, It is also possible to extract and output the longitude / latitude data from the GPGGA data 212a.

The observation end button 222f is a button for stopping the observation of the position of the GPS receiver 100 by stopping the communication of the user terminal 200. [ Thus, the user terminal 200 interrupts the communication with the geographic information source server 300.

In the observation screen 222, coordinate stakeout may be performed as shown in FIG. In other words, the distance remained from the current lengtness data 211a to the target point is input as a numerical value when the target point is input for the stakeout of coordinates, and the direction to the target point is displayed on the observation screen 222 from the current position to the target point To guide the user having the user terminal 200 to move to the target point.

On the other hand, when the remaining distance is equal to or less than a certain distance (for example, 1 m), a circle surrounding the current position and the target point is displayed on the observation screen 222 as shown in the right side of FIG.

The VRS-based precision position measurement method of the present invention is performed as follows.

s1 - The GPS receiver extracts the NMEA data from the GPS signal received from the satellite and transmits it to the user terminal through short-range communication.

s2 - The user terminal extracts the GPGGA data from the NMEA data and transmits it to the VRS server of the geographic information source.

s3 - The VRS server generates VRS data corresponding to GPGGA received from the VRS server and transmits it to the user terminal.

s4 - The NMEA data is corrected using the VRS data received from the user terminal, the correction precision is calculated, and the corrected NMEA data is generated.

s5 - The user terminal extracts the GPGGA data from the corrected NMEA data and outputs the latitude value to the screen.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be clear to those who have knowledge.

100: GPS receiver
110: communication module
111:
111a: NMEA data
111b: correction data
200: User terminal
210: Communication module
211:
211a: longitude and latitude data
212:
212a: GPGGA data
220: Observation control module
221: Setting screen
221a: Equipment connection
221b: coordinate system setting unit
221c: GPS setting unit
221d: Network setting section
221e: observation screen switching section
222: Observation screen
222a: Start observation button
222b: Save button
222c: Measurement history confirmation unit
222d: map screen switching section
222e: coordinate output section
222f: Observation end button
300: Geographic Information Server
310: VRS server
311a: VRS data

Claims (5)

A GPS receiver 100 located at the top of a cradle at a predetermined height vertically installed on the ground, for receiving a GPS signal from a satellite and extracting the NMEA data 111a and transmitting the extracted NMEA data 111a to the user terminal 200;
A geographic information source server 300 receiving the GPGGA data 212a from the user terminal 200 and generating VRS data 311a at the position of the GPS receiver 100;
Extracts the GPGGA data 212a from the NMEA data 111a received from the GPS receiver 100 and transmits the extracted GPGGA data 212a to the geographic information source server 300 and receives the VRS data 311a from the geographic information source server 300, And a user terminal (200) for generating correction data (111b) corrected by the correction data (311a) and extracting the longitude data (211a)

The VRS data 311a includes a virtual reference station location of the GPS receiver 100,

GPGGA is Fix Data that includes GPS time, latitude, longitude, and altitude information,
The fix type of fix includes "single", "fixed"
Single is calculated only with GPS provided by GPS,
Fixation is a form that is received according to the correction signal of the fixed reference station (RTK) and the virtual reference station (VRS) and expressed according to the precision after calculation,

The correction data 111b is a fixed or single processed according to the fix data of the GPGGA data by calculating the correction precision,

The user terminal 200
A setting screen 221 for connecting with the GPS receiver 100 and setting an observation environment,
And an observing screen (222) for outputting lunarity data (211a) corresponding to the position of the GPS receiver (100)

The setting screen 221 displays
A device connection unit 221a for outputting a list of devices connectable by the short-range communication unit 211 and performing a short-range communication connection with the selected device,
A coordinate system setting unit 221b for changing the coordinate system setting including the geoid application state and the geoid type,
GPS settings for changing settings, including whether or not the accuracy is applied, precision, critical altitude angle, critical altitude angle, receiver height that is the height of the mount where the GPS receiver 100 is installed, A portion 221c,
A network setting unit 221d for changing settings including an IP setting, a user ID, and a password,
And an observation screen switching unit (221e) for switching from the setting screen (221) to the observation screen (222)
The equipment connection unit 221a, the coordinate system setting unit 221b, the GPS setting unit 221c, and the network setting unit 221d are tab-
The observation screen switching section 221e is constituted by buttons formed on one side of the setting screen 221,

The observation screen 222 includes
An observation start button 222a for allowing the user terminal 200 to start the position observation of the GPS receiver 100 by starting communication with the GPS receiver 100 and the geographic information source server 300 and receiving the correction data 111b,
A storage button 222b for storing the longevity data 211a extracted from the current correction data 111b,
A measurement history confirmation unit 222c for outputting the history of the extracted longitude / latitude data 211a in a text form,
A map screen switching section 222d for outputting a map photograph corresponding to the position of the longitude / latitude data 211a in the background of the observation screen 222,
When the user terminal 200 stops communicating with the geographical information source server 300, it extracts the longitude / latitude data from the uncorrected GPGGA data 212a received by the GPS receiver 100 A coordinate output unit 222e for outputting,
And an observation end button (222f) for stopping the position observation of the GPS receiver (100) by stopping the communication of the user terminal (200)

It is possible to arrange the measurement history confirmation unit 222c, the map screen switching unit 222d, the coordinate output unit 222e, the storage button 222b and the observation end button 222f on one screen, Function within a single screen,
The observation start button 222a is switched to the observation end button 222f,
The user terminal 200 stops communication with the geographic information source server 300 by the observation end button 222f,

The NMEA data 111a is transmitted from the GPS receiver 100 to the user terminal 200 while touching the observation start button 222a,
The GPGGA data 212a is transmitted from the user terminal 200 to the geographic information source server 300,
The VRS data 311a is transmitted from the geographic information server 300 to the user terminal 200,
The user terminal 200 generates the correction data 111b,

When the accuracy setting is set in the GPS setting unit 221c, the storage is not performed even if the storage button 222b is pressed when the set precision is exceeded,

The NMEA data 111a is unprocessed data including GPGGA data, GPGSV data, and GPRMC data,
The local communication unit 211 of the user terminal 200 and the local communication unit 111 of the GPS receiver 100 are configured as a Bluetooth module,
The Internet communication unit 212 is composed of a TCP / IP module,
The coordinate system setting unit 221b is configured to change the setting of the projection origin, the datum, and the coordinate system in addition to the geoid application state and the geoid type.

In the cradle in which the GPS receiver 100 is installed, a recognition unit composed of a QR code or an NFC module is provided at a position where the user terminal can reach,
When the information of the recognition unit is read by the user terminal, the height information of the cradle is inputted to the user terminal, and the height of the receiver is automatically changed in the observation control module 220
Precise position measurement system for smart devices with height automatic setting method.
The method according to claim 1,
The GPS receiver (100)
And a communication module (110) for transmitting the NMEA data (111a) to the user terminal (200) by the short range communication unit (111)
Precise position measurement system for smart devices with height automatic setting method.
3. The method of claim 2,
The user terminal 200
The short distance communication unit 211 receives the NMEA data 111a from the GPS receiver 100,
And a communication module 210 for transmitting and receiving the NMEA data 111a and the VRS data 311a to and from the geographical information source server 300 by the Internet communication unit 212
Precise position measurement system for smart devices with height automatic setting method.
The method of claim 3,
On the observation screen 222
The distance remained from the current lengtness degree data 211a to the target point at the time of entry of the target point for coordinate staking is expressed by a numerical value,
The direction to the target point is displayed on the observation screen 222 as an arrow from the current position to the target point to induce the user carrying the user terminal 200 to move to the target point,
When the remaining distance is equal to or smaller than a predetermined distance, a circle surrounding the current position and the target point is displayed on the observation screen 222 to inform that it is a precision staking mode
Precise position measurement system for smart devices with height automatic setting method.
A method of precision position measurement using the precision position measurement system of any one of claims 1 to 4,
A step (s1) of extracting NMEA data from a GPS signal received from a GPS receiver in a GPS receiver and transmitting the extracted NMEA data to a user terminal through short-range communication;
Extracting GPGGA data from the NMEA data at the user terminal and transmitting the GPGGA data to the VRS server of the geographic information source (s2);
Generating VRS data corresponding to the GPGGA received from the VRS server and transmitting the data to the user terminal (s3);
A step (s4) of correcting the NMEA data using the VRS data received from the user terminal and calculating correction accuracy to generate corrected NMEA data;
Extracting the GPGGA data from the corrected NMEA data in the user terminal and outputting the GPGGA data to the screen (s5)
Precise position measurement method for smart devices with automatic height setting method.

Images