Location information processing system and location information processing method

Abstract

To provide, in one embodiment, a position information processing system, position information processing device and processing method, which make it easy to search for a target object.SOLUTION: According to an embodiment, a position information processing system comprises means of acquiring irradiation point RTK-GNSS position information indicative of a position of an irradiation point irradiated with a laser beam emitted by a measurement device main body, means of computing a differential distance between the position of the irradiation point and a position of a target object using the irradiation point RTK-GNSS position information and a pre-registered target object RTK-GNSS position information of the target object, and means of displaying the state of the difference.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a position information processing system and a position information processing method. [Background technology]

[0002] Work is regularly carried out to inspect and repair cracks and other damage on structures such as highways, buildings, bridges, and overpasses. In such cases, the search workers who find the cracks and damage may be different from the repair workers who repair the cracks and damage.

[0003] In such cases, the search worker will mark the locations of the cracks, scratches, etc. on a map or blueprint and hand it over to the repair worker. The repair worker will then go to the site a few days or weeks later using the map or blueprint as a reference and repair the cracks, scratches, etc. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2008-533479 [Patent Document 2] Special Publication No. 2008-523371 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when repair workers search for areas where cracks, scratches, etc. have occurred, if the surrounding environment has changed (grass growing, dirt accumulates, snow falls, the area is buried in sand, etc.), it may take a long time to search for the area or they may not be able to find it at all.

[0006] Therefore, in one embodiment, an object is to provide a position information processing system and a position information processing method that make it easy to search for an object. [Means for solving the problem]

[0007] According to one embodiment, the measuring device measures a first distance from the measuring device to an object by a laser and indicates a position of the measuring device. RTK-GNSS The measuring device has a means for acquiring position information and second distance information from the position of the measuring device to the position of the measuring device itself by a laser, and further has a means for communicating with a mobile terminal; The mobile terminal or the measuring instrument receives the first distance information and the measuring instrument RTK-GNSS An angle between a first direction indicating the first distance information and a second direction indicating the second distance information can be calculated from the position information, and RTK-GNSS A means for converting and obtaining location information is provided, The portable terminal transmits at least the identification information of the object, the measuring instrument, and RTK-GNSS Position information, the angle information, the object RTK-GNSS A means for transmitting link information to which the position information is linked, a mobile terminal for searching the object, which is different from the mobile terminal, has a means for acquiring the link information from the server; The search instrument for searching the object irradiates a laser to a virtual position near the object to measure third distance information between the virtual position and the search instrument, and also displays a search instrument indicating the position of the search instrument. RTK-GNSS a means capable of acquiring location information and fourth distance information from the position of the measuring device for search to the position of the measuring device for search by a laser, and having a means capable of communicating with the portable terminal for search; The mobile terminal for search or the measuring device for search receives the third distance information and the measuring device for search RTK-GNSS and calculating, from the position information, angle information formed by a third direction indicating the third distance information and a fourth direction indicating the fourth distance information, and calculating a virtual object at the virtual position. RTK-GNSS A means for converting and obtaining location information is provided, The mobile terminal for searching the object included in the link information RTK-GNSS Position information and the virtual object RTK-GNSSA position information processing system is provided, which has a means for displaying an indication of an error with respect to the position information on a display unit. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram for explaining an example of the functions of a measuring instrument used in the embodiment. [Diagram 2] FIG. 2 is a diagram for explaining that a measuring instrument used in the embodiment can communicate with a mobile terminal and register the RTK-GNSS position information of an object in the mobile terminal. [Diagram 3] FIG. 3 is a diagram explaining how to search for an object buried in snow using a measuring instrument and a mobile terminal. [Figure 4] FIG. 4 is an explanatory diagram showing an example of a scene when the system of the embodiment is utilized. [Diagram 5] FIG. 5 is an explanatory diagram showing another example of a scene when the system of the embodiment is utilized. [Figure 6] FIG. 6 is a diagram showing the main block configuration of a measuring instrument and a smartphone (electronic device) according to an embodiment. [Figure 7] FIG. 7 is a flowchart illustrating the operation of a smartphone when registering the GPS position of an object in an embodiment. [Figure 8] FIG. 8 is a flowchart illustrating the operation of a smartphone when searching for an object in an embodiment. [Figure 9] FIG. 9 is an explanatory diagram of a case in which, in an embodiment, before searching for an object, a measuring instrument is first guided to the position at which the object was registered. [Figure 10] FIG. 10 is a diagram showing yet another embodiment. [Figure 11] FIG. 11 is a diagram showing yet another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment will be described with reference to the drawings. Fig. 1 shows a state in which a measuring device 300 used in one embodiment points a target object P1 with a beam of a laser measuring function.

[0010] The measuring instrument 300 uses RTK-GNSS and can recognize its own position information on the GPS (measurement instrument RTK-GNSS position information) with high accuracy. It also has a distance measurement function using a laser beam, and by pointing the target P1 with a laser beam, it can obtain data on the distance S1 between the laser emission position (measurement instrument position) and the target P1. Furthermore, at this time, by providing a gyro sensor (built-in or external), it is also possible to obtain the angle θ1 between the direction of the current standing position P2 of the measuring instrument 300 and the direction of the target P1.

[0011] When the above requirements are met, it is easy to calculate the distance D1 from the standing position P2 to the object P1 using trigonometric functions, assuming that the line in the direction of the standing position P2 and the line passing through the object P1 are perpendicular to each other, and it is also easy to calculate the angle θ2 between the direction from the object P1 to the measuring instrument 300 and the direction from the object P1 to the standing position P2.

[0012] Furthermore, the distance S2 (height H) between the distance S1 and the standing position P2 can also be easily obtained by changing the direction of the measuring device 300 and using the laser measurement function.

[0013] Once the measuring instrument 300 knows the measuring instrument (first) RTK-GNSS position information and the distance D1, it can obtain (convert) the position information of the target P1 on the GPS (target (second) RTK-GNSS position information) by providing the distance D1 as correction data to the position element of the measuring instrument (first) RTK-GNSS position information. In this case, as shown in Fig. 2, the measuring instrument (first) RTK-GNSS position information may be converted to the position of P1', and then the target (second) RTK-GNSS position information may be obtained taking into account the height information.

[0014] Therefore, when some of the above measurement elements are in place, it can be said that it is possible to obtain GPS position information of the target P1 (target (second) RTK-GNSS position information) from GPS position information of the measuring instrument 300 (measuring instrument (first) RTK-GNSS position information).

[0015] Furthermore, the measuring instrument 300 has a communication function, for example, using Bluetooth (registered trademark), which allows the measuring instrument 300 to transmit measurement information to an electronic device, such as a smartphone or a tablet PC.

[0016] 2 shows a state in which the measuring instrument 300 and, for example, the smartphone 100 are in communication with each other. The smartphone 100 has a storage function that stores at least the GPS position information (object RTK-GNSS position information) of the object P1 described above as object (P1) related information. This storage function may store the measuring instrument RTK-GNSS position information.

[0017] As described above, the measuring instrument 300 has a function of communicating with the smartphone 100. Therefore, the measuring instrument 300 may have a function of calculating the (second) RTK-GNSS position information of the object from the various measurement data described above, and transmit the (second) RTK-GNSS position information of the object to the smartphone 100. Alternatively, the function of calculating the (second) RTK-GNSS position information of the object may be left to the smartphone 100, and the measuring instrument 300 may simply transmit the measured data to the smartphone 100 sequentially.

[0018] In this way, the position information processing system can register at least the target (second) RTK-GNSS position information (which may also be referred to as irradiation point RTK-GNSS position information) to, for example, the smartphone 100.

[0019] The smartphone 100 may further transmit the various measurement data received from the measuring instrument 300 to a server. In this case, the server may calculate the GPS position information of the object P1 (object (second) RTK-GNSS position information). Alternatively, the smartphone 100 may calculate the GPS position information of the object P1 (object (second) RTK-GNSS position information) based on the various measurement data received from the measuring instrument 300, transmit the calculation result to the server, and the server may manage the position information (object (second) RTK-GNSS position information). In this case, the position information may include attribute information such as data collection date and time information, weather information, company information, and area name information, in addition to the device ID of the smartphone 100.

[0020] FIG. 3 shows a state in which the object P1 is searched for by a user when the object P1 is buried in snow SW due to snowfall, for example. The object P1 cannot be seen by the user from the outside because it is buried in snow SW. Therefore, the user irradiates a laser beam emitted from the measuring device 300 to a position (irradiation point Px) near the location of the object P1. Then, the system can obtain irradiation point (third) RTK-GNSS position information indicating the position of the irradiation point Px. The smartphone 100 can then compare the previously registered object (second) RTK-GNSS position information with the currently acquired irradiation point (third) RTK-GNSS position information, and obtain the distance X of the difference between their positions.

[0021] The smartphone 100 can also visualize and display on the screen of the smartphone 100 the relationship between the target (second) GPS position and the currently acquired irradiation point (third) GPS position. Icon T1 is an image representing the target (second) GPS position, and icon T2 is an image representing the currently pointed irradiation point (third) GPS position. Icon T2 is displayed, for example, as an arrow, and when the irradiation point is changed, the image is processed so that the arrow points in the changed direction. This allows the user to adjust the point of the beam to search for the target position in detail. The current (fourth) RTK-GNSS position information (GPSD4) of the measuring instrument 300 is information that the measuring instrument 300 detects by itself at all times.

[0022] In addition to guidance by images, guidance may be given by voice. For example, as the illuminated point approaches the target, the period of intermittent sounds (e.g., beep, beep, ...) may become shorter, or actual voices such as "far," "close," "closer," and "very close" may be output.

[0023] The above explanation is for the case where the object is buried in snow, but it goes without saying that this system can also be used to search for an object buried in sand or volcanic ash.

[0024] FIG. 4 shows an example where the above-mentioned position information processing system is actually used, in which the guide lights 411a-411n and 421a-421n arranged beside the runway 400 of an airport are the target objects. The guide lights 411a-411n and 421a-421n may be buried by snowfall. Therefore, the positions of the guide lights 411a-411n and 421a-421n are stored in advance in the memory of the smartphone 100 as target object RTK-GNSS position information. Then, when the user searches for the guide lights 411a-411n and 421a-421n buried in snow, the user uses the measuring instrument 300 and the smartphone 100. The user can accurately search for the guide lights 411a-411n and 421a-421n by the procedure described in FIG. 3, and can efficiently remove snow.

[0025] FIG. 5 shows an example where the above-mentioned position information processing system is actually used, and scratches and cracks 501a, 501b, and 501c on a bridge 500 are the target objects. These scratches and cracks 501a, 501b, and 501c are registered in the smartphone 100 as target object RTK-GNSS position information by a searcher in advance in the procedure as described in FIG. 2. After that, a repair worker can accurately search for the positions of each of the scratches and cracks 501a, 501b, and 501c in the procedure as described in FIG. 3, and can efficiently perform repair work. That is, even if the positions of the scratches and cracks 501a, 501b, and 501c are difficult to visually see due to dirt adhesion or grass growth, the system of this embodiment can accurately search for the positions of each of the scratches and cracks 501a, 501b, and 501c.

[0026] The system of this embodiment is not limited to the above applications, but can also be used as a search tool for registering the locations of wild plants, matsutake mushrooms, etc. that sprout every year in mountains and fields, and then harvesting them the following year.

[0027] 6 is a block diagram showing the basic internal configuration of the measuring instrument 300 and the smartphone 100. The measuring instrument 300 includes a power supply unit 311, a controller 312, a laser distance measuring instrument 313, an RTK-GNSS unit 314, a communication unit 315, a gyro sensor 316, and an altimeter 317. It is not necessary to include all of these components, and the purpose can be achieved by providing the power supply unit 311, the controller 312, the laser distance measuring instrument 313, the RTK-GNSS unit 314, and the communication unit 315.

[0028] The smartphone 100 includes a system controller 111. The system controller 111 includes a central processing unit (CPU) 112, a ROM 113 that stores fixed programs and coefficients, and a ROM 114 for writing and reading intermediate data during arithmetic processing. A main bus 115 includes a power line, a data line, a control signal line, and the like. A power supply 130 supplies power to each block inside the smartphone 100. The antenna device 212 includes an antenna for Internet communication, an antenna for short-range communication (Wi-Fi (registered trademark), Bluetooth, etc.), and an antenna for GPS. The antenna device 121 is connected to the transmitting / receiving device 122 and is capable of transmitting and receiving high-frequency signals. The transmitting / receiving device 122 demodulates the received radio waves and supplies the demodulated data to the system controller 111, and also modulates data to be transmitted that is received under the control of the system controller and supplies the data to the antenna device 121.

[0029] The smartphone 100 has a display 131 and a touch operation unit 132 integrated with the display 131. A signal generated when the touch operation unit 132 is operated is picked up by an operation input processing unit 141 and analyzed by the system controller 111. Received monitor image (moving image or still image) data and internally generated image data are input from the image data processing unit 142 to the display 131 and displayed as an image.

[0030] The smartphone 100 also includes a camera 143, and can store captured still images and videos in a main memory 146. The smartphone 100 also includes a microphone 144, and can store picked-up audio data in the main memory 146.

[0031] Furthermore, the smartphone 100 includes a GPS unit 145 and can acquire location information. The smartphone 100 can then display the current location information on the stored map data.

[0032] The smartphone 100 also outputs a ringtone through a speaker 147 and controls a telephone function unit 148 to enable the user to answer telephone calls.

[0033] 7 shows the operation flow of the smartphone 100 when registering the position of an object through the cooperative operation of the measuring instrument 300 and the smartphone 100. The user carries the measuring instrument 300 and the smartphone 100. The smartphone 100 has a registration function for registering the position of an object. The user operates the registration mode button to put the smartphone 100 into the object registration mode.

[0034] The user aims the measuring instrument 300 at the object and irradiates a laser (AS1). If the measuring instrument 300 has a function for calculating the object RTK-GNSS position information, it transmits the object RTK-GNSS position information and the measuring instrument RTK-GNSS position information indicating the position of the measuring instrument 300 itself to the smartphone 100. If the measuring instrument 300 does not have a function for calculating the object RTK-GNSS position information, it may transmit various measured data to the smartphone 100, and the smartphone 100 may calculate the object RTK-GNSS position information. In this example, it is assumed that the smartphone 100 calculates the object RTK-GNSS position information.

[0035] When the smartphone 100 captures radio waves from the measuring instrument 300, it starts receiving data (AS2). At this time, the smartphone 100 notifies that data is being received by sound or colored light (AS3). The smartphone 100 determines whether or not it has received the measuring instrument RTK-GNSS position information (GPSD1) and the data of the distance S1, angle θ1, and height H (see FIG. 2) from the measuring instrument 300, or whether or not it has received the data of the distance S1, angle θ1, and distance S2 (see FIG. 2) (AS4).

[0036] If the received data is sufficient, the distance D1 from the position P2 of the measuring instrument 300 to the object P1 is calculated. Then, from this distance D1 and the measuring instrument RTK-GNSS position information (GPSD1), the object P1 RTK-GNSS position information (GPSD2) indicating the position of the object P1 is calculated (converted) (AS5).

[0037] Then, identification data (P1ID) is attached to the object P1, and the identification data (P1ID) is linked to the previous measuring instrument RTK-GNSS position information (GPSD1) and the object P1 RTK-GNSS position information (GPSD2) and registered in the storage unit (AS6). If the user wants to register the next object, the user operates the operation button for object registration (AS7). Then, the user holds the measuring instrument 300 and the smartphone 100, moves close to the next object, and operates, for example, the start button of the measuring instrument 300 (AS11). In step AS7, when the user operates the operation end button on the smartphone, the smartphone 100 stores the data registered so far in memory as a file. At this time, the user is requested to input a file name.

[0038] FIG. 8 is a flowchart showing the operation of the smartphone 100 when searching for an object. The user holds the measuring instrument 300 and the smartphone 100, moves to an area where the object is located, and selects the operation mode button of the smartphone 100. The user then aims the measuring instrument 300 at the area where the object is thought to be located and irradiates a laser (BS1). When the smartphone 100 receives radio waves from the measuring instrument 300, it starts receiving data (BS2). At this time, the smartphone 100 notifies that data is being received by sound or colored light emission (BS3). The smartphone 100 receives the measuring instrument's current (fourth) RTK-GNSS position information (GPSD4) and the distance S from the measuring instrument 300. 3 , angle θ 3 , height H 2 (See Figure 3) data was received, or the distance S 3 , angle θ 3 , distance S 4 It is determined whether the data (see FIG. 3) has been received (BS4).

[0039] If the received data is sufficient, the distance D2 from the standing position P2 of the measuring instrument 300 to the irradiation position Px is calculated. Then, from this distance D2 and the measuring instrument current (fourth) RTK-GNSS position information (GPSD4), the irradiation position (third) RTK-GNSS position information (GPSD5) indicating the position of the irradiation point Px is calculated (converted). Furthermore, the distance X of the difference between this irradiation position (third) RTK-GNSS position information (GPSD5) and the target (second) RTK-GNSS position information (GPSD2) registered in advance is calculated (BS5).

[0040] Furthermore, the smartphone 100 can provide guidance as described in Fig. 3 using the display screen and / or audio (BS6). If there is another object to be searched, the user operates the operation button for searching the object (BS7). Then, the user holds the measuring device 300 and the smartphone 100, moves close to the next object, and operates, for example, the start button of the measuring device 300 (BS11). In step BS7, when the user operates the operation end button on the smartphone 100, the process ends (SB8).

[0041] As described above, the system and / or device includes a means for obtaining irradiation point RTK-GNSS position information indicating the position of the irradiation point irradiated by the laser beam emitted by the measuring instrument 300 body. The system and / or device also includes a means for calculating the difference distance between the position of the irradiation point and the position of the object by using the irradiation point RTK-GNSS position information and the object RTK-GNSS position information of the object registered in advance. Here, the means for obtaining the irradiation point RTK-GNSS position information may obtain the irradiation point RTK-GNSS position information by performing calculation using a plurality of measurement data transmitted from the measuring instrument body. Alternatively, the means for obtaining the irradiation point RTK-GNSS position information may obtain the irradiation point RTK-GNSS position information by receiving the irradiation point RTK-GNSS position information transmitted from the measuring instrument body. The system and / or device may also include a means for displaying the state of the difference distance on a display. Furthermore, the above features are also effective as a position information processing method.

[0042] FIG. 9 shows an embodiment in which, when a user searches for an object, the user is guided to a registered area so that the user searches from the registered position of the object as much as possible. The user operates the registered position return button of the smartphone 100 before operating the object. This button is operated, for example, after step BS1 and in step BS11 of FIG. 8. First, the measuring instrument current (fourth) RTK-GNSS position information from the measuring instrument 300 is transmitted to the smartphone 100. The smartphone 100 receives the current (fourth) RTK-GNSS position information from the measuring instrument 300, searches for the pre-registered measuring instrument (first) RTK-GNSS position information closest to this position, and starts guidance. In this case, too, an icon T11 indicating the measuring instrument (first) GPS position and an icon T12 indicating the current (fourth) GPS position are displayed on the screen to support the user's movement.

[0043] With the above functions, the search location of the searched item will be the same as when the location information of the searched item was registered, which is expected to make searches easier.

[0044] Fig. 10 shows yet another embodiment. The basic operation is the same as that of the configurations of Figs. 2 and 3, but in this embodiment, the system is configured so that the RTK-GNSS position information of the object is recorded in the data file 601 of the server 600 via the network NET. Therefore, when searching for an object, the information is downloaded from the data file 601 by the smartphone 100 and used. However, with this system, for example, even if a searcher who finds the location of cracks, scratches, etc. and a repair worker who repairs the cracks, scratches, etc. use different smartphones, the system can be used without any problems.

[0045] Fig. 11 shows yet another embodiment. The basic operation is the same as that of the configurations of Fig. 2 and Fig. 3, but in this embodiment, the target RTK-GNSS position information is recorded in a data file 601 of a server 600 via a network NET.

[0046] In addition, when using the recorded object RTK-GNSS position information, it is possible to share it among multiple smartphones 100a, . . . 100n. For example, when repairing scratches or cracks on a bridge Bri or a tunnel Tunn, multiple workers may repair the bridge Bri or the tunnel Tunn. In such a case, the system displays a map based on the GPS function on each worker's smartphone 100a, . . . 100n, and can display the repair points p11-p13, p21 on the map. This composite map information may be created in the server 600 or may be created in the smartphone. When the composite map information is created in the smartphone, the smartphone downloads the map information and the RTK-GNSS position information. When the composite map information is created in the server 600, each smartphone can download the composite map information.

[0047] By combining object position information with map information as described above, a manager can devise an efficient deployment strategy for workers.

[0048] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims. Furthermore, even if each component of the claims is expressed by dividing the components, or expressing a plurality of components together, or expressing them in combination, it is within the scope of the present invention. In addition, multiple embodiments may be combined, and examples composed of this combination are also within the scope of the invention.

[0049] The present invention is also applicable when the claims are expressed as a control logic, a program including instructions for causing a computer to execute the control logic, or a computer-readable recording medium having the instructions written thereon. The names and terms used are not intended to be limiting, and other expressions that have substantially the same content and intent are also included in the present invention. [Explanation of symbols]

[0050] 100···Smartphone, 111···System controller, 122···Transmitter / receiver, 131···Display, 141···Operation input processing unit, 142···Image data processing unit, 146···Main memory, 148···Telephone function unit, 300...measuring instrument, 312...controller, 313...laser distance measuring instrument, 314...RTK-GNSS section, 315...communication device, 316...gyro sensor, 317...altimeter.

Claims

1. the measuring instrument is capable of measuring a first distance information from the measuring instrument to an object by a laser, and acquiring measuring instrument RTK-GNSS position information indicating a position of the measuring instrument, and second distance information from the position of the measuring instrument to its own position by a laser, and further has a means capable of communicating with a portable terminal; The mobile terminal or the measuring instrument has a means for calculating angle information between a first direction indicating the first distance information and a second direction indicating the second distance information from the first distance information and the measuring instrument RTK-GNSS position information, and converting the angle information to obtain the target RTK-GNSS position information of the target, The mobile terminal has a means for transmitting link information linking at least the identification information of the object, the measuring instrument RTK-GNSS position information, the angle information, and the object RTK-GNSS position information to a server; a plurality of search portable terminals for searching the object, each of which is different from the portable terminal, each of which has a means for acquiring the link information from the server; a search instrument for searching the target, which irradiates a laser onto a virtual position near the target to measure third distance information between the virtual position and the search instrument, and is capable of acquiring search instrument RTK-GNSS position information indicating the position of the search instrument and fourth distance information from the position of the search instrument to the position of the search instrument by a laser, and has a means for communicating with the search portable terminal; The search mobile terminal or the search measuring instrument has a means for calculating angle information between a third direction indicating the third distance information and a fourth direction indicating the fourth distance information from the third distance information and the search measuring instrument RTK-GNSS position information, and converting the angle information to obtain virtual object RTK-GNSS position information of the virtual position; A location information processing system in which the search portable terminal has a means for displaying on a display unit an indication of the error between the target RTK-GNSS location information contained in the link information and the virtual target RTK-GNSS location information.

2. 2. The position information processing system according to claim 1, wherein the portable terminal is for a searcher, and the portable terminal for searching is for a repair worker.

3. The measuring instrument measures first distance information from the measuring instrument to an object by a laser, and also acquires measuring instrument RTK-GNSS position information indicating the position of the measuring instrument and second distance information from the position of the measuring instrument to its own position by a laser, and further communicates with a portable terminal; The mobile terminal or the measuring instrument calculates angle information between a first direction indicating the first distance information and a second direction indicating the second distance information from the first distance information and the measuring instrument RTK-GNSS position information, and converts it to obtain target RTK-GNSS position information of the target; The mobile terminal transmits link information to a server, the link information linking at least the identification information of the object, the measuring instrument RTK-GNSS position information, the angle information, and the object RTK-GNSS position information; a plurality of search portable terminals that search for the object, different from the portable terminal, acquire the link information from the server; a search instrument for searching the target irradiates a laser at a virtual position near the target to measure third distance information between the virtual position and the search instrument, and acquires search instrument RTK-GNSS position information indicating the position of the search instrument and fourth distance information from the position of the search instrument to the position of the search instrument by using a laser, and communicates with the search portable terminal; The search mobile terminal or the search measuring instrument calculates angle information between a third direction indicating the third distance information and a fourth direction indicating the fourth distance information from the third distance information and the search measuring instrument RTK-GNSS position information, and converts it to obtain virtual object RTK-GNSS position information of the virtual position; The mobile terminal for searching displays on a display unit a display indicating an error between the target RTK-GNSS position information included in the link information and the virtual target RTK-GNSS position information. Location information processing method.

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