KR20050030423A - Multilateral positioning system using dgps and method thereof - Google Patents

Abstract

A system for measuring the multilateral positions by using DGPS and a method thereof are provided to indicate the current position of the user and the position of the hole corresponding to the current position in the golf game. A system for measuring the multilateral positions by using DGPS(Differential Global Positioning System) includes a reference station, a moving reference station and a plurality of client terminals(150). The reference station calculates the coordinate from the GPS signal by receiving the GPS signal periodically and obtains the accurate position information by calculating the error between the reference coordinate and the calculated coordinate. The moving reference station receives the GPS signal from the GPS satellite(140) and obtains the accurate position information by receiving the DGPS signal to correct the position from the reference station. The plurality of client terminals(150) communicates with the moving reference station through RF, receives the specific position, the position information adjacent to the specific position, the angle information and the position correction data, and displays the detected the direction and the distance.

Description

MULTILATERAL POSITIONING SYSTEM USING DGPS AND METHOD THEREOF}

The present invention relates to a multi-party position measuring system and method using the DIFERENTIAL GLOBAL POSITIONING SYSTEM (DGPS), the distance and orientation of the desired place using a mobile reference station in sports or local surveying, such as golf, where the relative position is important. The present invention relates to a multi-party position measuring system and method using digital PS.

Relative position is very important in sports where golf ball is inserted into the hole in the natural state such as golf. In particular, sports such as golf often do not see their position and the position where the hole is placed, in this case, go to the hole in advance to see and measure the position and then put the golf ball in the hole.

If you are a golf player and you are not familiar with the golf course in order to complete the 18 holes, you need to travel to places where you can't see the hole beforehand. In many cases, the location is incorrect, there is a problem that often does not find a golf ball due to obi.

The present invention is to solve the problems of the prior art as described above, in the sport where the relative position is important in the nature, such as golf, the current position and orientation of the corresponding hole and the corresponding hole of the Digi-PS It is an object of the present invention to provide a multi-party position measuring system and method using.

The configuration of the present invention for achieving this technical problem is described. The present invention uses a DGPS system for the accuracy of obtaining the coordinates of a particular point. In order to compensate for GPS signals that may be caused by various factors, the reference point coordinates are set by precise surveying, and the reference station is installed at the set reference point coordinates so that the mobile reference station communicates with the reference station. The GPS coordinates of the mobile reference station are compensated based on the error of the signal, and such information is stored in the memory of the mobile reference station.

Another technical feature of the present invention is to receive a GPS correction signal including time from a mobile reference station by short-range wireless communication such as RF communication and receive a GPS signal including time information from a GPS satellite at the same time. The GPS position and the GPS correction signal are calculated to find the correct position. At this time, such a position may be each hole of golf and other clubhouses.

Hereinafter, preferred embodiments of the present invention will be described. 1 is a system block diagram showing a multi-party position measurement system using a digital PS according to the present invention. Referring to FIG. 1, the reference station 110 is a device that is installed at a reference point set through precision survey, receives a GPS signal received from the GPS satellite 140, and wirelessly communicates with the mobile reference station 130.

Reference station 110 is a GPS receiver 112 that receives GPS signals from GPS satellites 140, a wireless communication device 114 that communicates with mobile reference station 130, and a control device 116 that controls these devices as a whole. It consists of. The reference station 110 including the GPS receiver 112 periodically receives the GPS signal and simultaneously receives the position information of the mobile reference station 130 that has received its location signal from the mobile reference station to generate the DGPS signal. do. In this case, the DGPS signal also includes time information, and the time information included in this way allows the GPS signal and the DGPS signal to be processed at the same time to calculate an accurate position.

The control device 120 in the reference station 110 consists essentially of a computer system with a mapping program. The mapping program receives a coordinate of the reference station 110 and the current position coordinates of the mobile reference station 130 measured at predetermined intervals from a communication link with the reference station 110. A topographic map of the golf course searched by 130 may be created. Since the mobile reference station 130 can measure the position from the GPS satellites 140, the control device receives the location information, the orientation information, and the time information received from the GPS satellites 140, and is included in the GPS signal from the reference station. Receive a DGPS signal capable of correcting position and orientation. The DGPS signal also includes time information. Computation of GPS and DGPS signals enables the detection of very small positions with a 1-2 M radius. The detected position is stored in the mobile reference station 130. When a plurality of positions are stored and their relative positions are known, a two-dimensional plan of a predetermined region can be created.

The mobile reference station 130 includes a GPS receiver 132, an RF communication unit 136, a wireless communication device 134, and a control device 138. GPS information and DGPS information are acquired from the reference station 130 to calculate the location of the predetermined point, and the location information of the point is obtained and stored in the memory (). The mobile reference station 130 performs RF communication with the client terminal 150 through the RF communication unit 136, and transmits correction data on a location of a predetermined point to the client terminal 150 through RF communication.

The client terminal 150 communicates with the mobile reference station 130 by RF, receives correction data of a predetermined point designated by the mobile reference station 130 through RF communication, and receives a GPS signal from the GPS satellite 140. Know your bearing and distance. For example, when the mobile reference station 130 sets the point once in the 8th hole and the adjacent 7th and 9th holes, the mobile reference station 130 is provided with the correct orientation information of the 8th hole from the reference station 110 and Relative distances between adjacent holes 7 and 9 and angle information between the respective distances and holes 7, 8 and 9 are obtained. Therefore, when the user having the client terminal 150 rounds at the 8th hole, since the distance between the 7, 8, and 9 holes is known, the orientation between the 8th hole and the user having the client terminal 150 is calculated. Can be obtained, in particular, through calculations used in triangulation and other surveying.

The mobile reference station 130 may be a person, a GPS receiver 132, an RF communication unit 136, a wireless communication device 134, a control device mounted on a mobile vehicle, preferably a motorcycle or an unmanned vehicle controlled by a wireless vehicle. 138 and a memory 139.

The GPS receiver 132 is small enough to be mounted on the mobile reference station 130 and performs a function of receiving the current position information of the current mobile reference station 130 from the conventional GPS satellite 140.

The radio communication device 134 periodically communicates with the reference station 110 for a predetermined period of time. Receives the DGPS signal, which is the error data of the GPS signal, from the reference station 110 and transmits the compensation to the control device 138 to perform compensation for the current location coordinates, and receives the compensated current location information from the control device 138. Retransmit to reference station 110.

The control device 138 performs a function of managing the operation of the mobile reference station 130 as a whole. It controls the function of the wireless communication device 134, and based on the information received from the GPS receiver 132 and the GPS signal error information received from the reference station 110 at the same time the GPS receiving coordinates of the mobile reference station 130 Perform a compensating process. The control device 138 transmits the information for measuring the position and orientation to the client terminal 150 through the RF communication unit 136.

2 is a flowchart illustrating a step of measuring a position in the mobile reference station 130 according to FIG. 1 of the present invention. Referring to FIG. 2, the mobile reference station 130 receives a GPS signal including location information from a plurality of GPS satellites 140, and at the same time receives a DGPS signal, which is position correction data, from the reference station 110. (Step 202).

Receiving the above-described GPS signal and DGPS signal, the position of the mobile reference station 130 is calculated and the position of the mobile reference station 130 is determined (step 204).

The position determined as described above stores the position of the mobile reference station 130 in the memory 139 as information using the longitude and latitude information (step 206).

The mobile base station 130 configures the position correction data to be transmitted to the client terminal 150 in accordance with the RF format (step 208). Such position correction data generates one DGPS signal at a predetermined position, for example, at a position corresponding to the position of each hole or clubhouse in the case of golf.

In addition, the position correction data of the RF format configured as described above is transmitted to the client terminal 150 through the RF communication unit 136 (step 210).

Check if client terminal 150 is off (step 212) and if it is off, return to step 202. If the client terminal 150 is turned on, it ends.

3 is a block diagram schematically showing the configuration of the client terminal 150 according to FIG. 1 of the present invention. Referring to FIG. 3, the client terminal 150 includes a GPS receiver 152, an RF communication unit 154, an input unit 156, a control unit 160, and a display unit 158.

The GPS receiver 152 receives the position information of the client terminal 150 from the GPS satellite 140, and at the same time, the RF communicator 154 receives the position correction data in RF format from the RF communicator 136. And position information of two holes adjacent to the predetermined hole.

The control device 138 calculates and obtains distance information between the client terminal 150 itself and a predetermined hole based on the location information received through the mobile reference station 130 and the RF communication unit 136, and the distance between each hole. And the angle of the inner side of the two lines connecting the three holes by a virtual straight line is calculated and calculated again to obtain the orientation information between the hole and the client terminal 150 through the calculation.

The client terminal 150 has an input unit 156 in the form of a numeric pad that allows a client to input a desired hole.

The distance and orientation with respect to the hole calculated as described above are displayed on the display unit 158 in GUI form and / or character form on the display unit.

4 is a flowchart illustrating a position measurement in the client terminal 150 according to FIG. 1 of the present invention. Referring to Figure 3 will be described the operating procedure of the present invention.

The client terminal 150 receives a GPS signal including its location information from the GPS satellite 140 and at the same time the RF communication unit 154 receives the position correction data and two adjacent holes from the RF communication unit 136 in the mobile base station 130. Receive accurate location data (step 302).

An accurate position of the client terminal 150 is calculated by using the position correction data received from the mobile reference station 130 and the position received from the GPS satellite 140 (step 304).

In this way, since we know the exact coordinates of two points, we can find the distance between two points. In this way, the distance between the predetermined hole of golf and the predetermined terminal interval or the distance between the client terminal 150 and the client terminal 150 whose distance is known by the client's request is calculated (step 306).

In this way, the angle information, or orientation information, of the predetermined hole measured by the position correction data and the GPS signal and also two adjacent holes of the point measured by the DGPS is known, and the client terminal 150 is obtained from all three points described above. Since the distance of the furnace is calculated, the client terminal 150 receives a distance and azimuth information of a hole and an adjacent hole measured by the DGPS by a method such as a triangular method, and calculates a direction of a predetermined point. The orientation of the predetermined hole and the client terminal 150 is found (step 308).

The client terminal 150 displays the distance and azimuth information with the predetermined hole measured in this way on the client terminal 150 (step 310).

Check if client terminal 150 is off (step 212) and if it is off, return to step 202. If the client terminal 150 is turned on, it ends.

If the mobile reference station 130 establishes the point once in the adjacent holes 7 and 9, the mobile reference station 130 is provided with the correct orientation information of the hole 8 from the reference station 110 and the adjacent points 7 and 9 The relative distances of the holes and the angle information between the respective distances and the holes 7, 8 and 9 are obtained. Therefore, when the user having the client terminal 150 rounds at the 8th hole, since the distance between the 7, 8, and 9 holes is known, the orientation between the 8th hole and the user having the client terminal 150 is calculated. In particular, it can be obtained through trigonometric and other calculations.

The present invention has the effect that can be displayed by tracking the current position and the position of the hole corresponding to the current position in the sport where the relative position is important, such as golf on the stage.

1 is a system block diagram showing a multi-party position measuring system using a digital PS according to the present invention.

2 is a flow chart showing the step of measuring the position in the mobile reference station according to FIG. 1 of the present invention.

3 is a block diagram schematically showing the configuration of the client terminal 150 according to FIG. 1 of the present invention.

4 is a flowchart illustrating a step of measuring a position in a user terminal according to FIG. 1 of the present invention.

<Brief description of symbols for the main parts of the drawings>

110: reference station 112, 132, 152: GPS receiver

114, 134: wireless communication device 116, 138: control device

130: mobile reference station 136: RF communication unit

140: GPS satellite 150: client terminal

152: GPS receiver 154: RF communication unit

156: input unit 158: display unit

160: control unit

Claims (3)

In the system for measuring the multi-party position using the GPS satellite 140, A reference station 110 that periodically receives a GPS signal, calculates coordinates by its GPS signal, and first calculates an error with a reference coordinate of a reference point set through precise surveying to obtain accurate geographic information; A mobile reference station (130) moving to receive GPS signals from the GPS satellites (140) and receiving DGPS signals for correcting positions from the reference station (110) to obtain accurate position information; In RF communication with the mobile reference station 130, the mobile station receives a specific point designated by the mobile reference station 130, location information of the adjacent point, angle information of the adjacent point and the specific point, and its own position correction data. Receiving its own location information from the GPS satellite 140, calculates and finds the exact location of its own, and again finds the bearing and distance to a specific point, characterized in that it comprises a client terminal 150 for displaying it Multi-party position measuring system using Digi PS. In the method for measuring the multi-party location using the GPS satellite 140, The mobile reference station 130 receives the location information from the plurality of GPS satellites 140 and receives the position correction data for correcting the position from the reference station 110 to determine the exact position of the mobile reference station 130. Measuring; The mobile base station (130) storing the measured position in a memory (139), generating position correction data in RF format, and transmitting the position correction data to the client terminal (150); The client terminal 150 receives its location information from the GPS satellite 140 and at the same time the RF communication unit 154 receives the position correction data from the RF communication unit 136 in the mobile base station 130 and the exact position of two adjacent holes. Calculating the exact position of the client terminal 150 by receiving the received; Obtaining a distance between a predetermined hole for knowing a distance and the client terminal (150); The predetermined terminal and the client terminal 150 having respective distance information between two adjacent holes of the point measured by the GPS signal and two adjacent holes of the point measured by DGPS, and angle information formed by the three adjacent holes. Obtaining an orientation with; The client terminal 150 displays the distance and azimuth information with respect to the predetermined hole measured in this way on the client terminal 150. The method of claim 1, The client terminal 150, A GPS receiver 152 for receiving location information of the client terminal 150 from a GPS satellite 140; Receives distance information of a predetermined hole by communicating with the mobile reference station 130 and the RF communication unit 136, and the distance information of two holes adjacent to the predetermined hole and two lines of three holes connected by a virtual straight line. An RF communication unit 136 for receiving inside angle information; An input unit 156 of a numeric pad type capable of inputting a desired hole by the client; Receives the position information received from the GPS receiver 152 and the distance information, the position information, and the angle information between each hole received by the RF communication unit 154, and the distance and orientation of the hole input by the client through the input unit 156. A controller 160 for calculating a; And a display unit (158) for displaying the calculated distance and orientation with respect to the hole in a GUI format and / or a text format.