KR100902333B1 - Method and apparatus for locating a survivor using a search and rescue terminal equipped with navigation chipset - Google Patents

Abstract

The present invention relates to a method and apparatus for measuring the position of a distress using a search structure terminal equipped with a navigation chip. The method for measuring the distress position according to the present invention includes the steps of receiving a rescue signal from a search rescue terminal via a search rescue satellite, a distance information from a search rescue terminal measured by a navigation chip to a navigation satellite, and information about the corresponding navigation satellite. Extracting the signal from the rescue signal, receiving the distance information from the search structure satellite to the search structure terminal measured in the search structure satellite, and determining the position of the search structure terminal by integrating the distance information and the navigation satellite information. With steps. According to the present invention, even if only one or more navigation satellites enter the visible range, the position of the distress person can be measured immediately.

Description

METHOD AND APPARATUS FOR LOCATING A SURVIVOR USING A SEARCH AND RESCUE TERMINAL EQUIPPED WITH NAVIGATION CHIPSET}

The present invention relates to a method and apparatus for measuring the distress position, and more particularly, to a method and apparatus for measuring the position of a distress using a search structure terminal equipped with a navigation chip.

The present invention is derived from the research conducted as part of the IT new growth engine core technology development project of the Ministry of Information and Communication and the Ministry of Information and Telecommunications Research and Development. Rescue terminal technology].

According to the present invention, a search rescue service operating only by a beacon signal currently in operation receives only a beacon signal of a search rescue terminal from a low-orbit search rescue satellite when a distress signal is generated to determine the location of the distress by measuring a distance by the Doppler effect. It is designed. Therefore, at least two distance measurements are required to measure the two-dimensional position of the distress. The re-visit time of the low-orbit search structure satellite is 1.5 hours, and the actual positioning takes considerable time.

To compensate for these drawbacks, a second generation search and rescue system with navigation chips is being introduced. In this case, since the position of the distress is measured by the navigation chip, precise positioning by the navigation chip is possible compared to the positioning by the low-orbit Doppler. However, there is a limit at high latitudes above 75 degrees south latitude and north latitude. In addition, even in the case of a search structure terminal equipped with a navigation chip, it is difficult to locate the case when the number of visible satellites is less than four.

Accordingly, an object of the present invention is to provide a method and apparatus for providing a location service that enables continuous distress positioning even when a visible satellite is not sufficiently secured in a distress situation.

In addition, the present invention is to provide a positioning service for the distress of the navigation rescue terminal equipped with navigation chip in distress situation, even if the visible satellite is not sufficiently secured, the distance information by the Doppler for the beacon signal of the navigation rescue terminal, and search Another object of the present invention is to provide a method and apparatus for directly determining a distress location without a time delay by receiving and processing distance information by one or more navigation signal processing received by a navigation chip of a rescue terminal.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned above can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

In order to achieve the above object, the present invention provides a method for measuring the position of a distress using a search structure terminal equipped with a navigation chip, the method comprising: receiving a rescue signal from the search structure terminal via a search structure satellite; Extracting the distance information from the search structure terminal to the navigation satellite and the information about the navigation satellite from the rescue signal, and the search structure satellite measured from the search structure satellite to the search structure terminal. And receiving the distance information and determining the position of the search structure terminal by integrating the distance information and the navigation satellite information.

In another aspect, the present invention is a device for measuring the position of the distress using a navigation structure terminal equipped with a navigation chip, receiving a rescue signal from the navigation structure terminal via a search structure satellite, the search structure measured in the search structure satellite A communication unit for receiving the distance information from the satellite to the search structure terminal, and means for extracting the distance information from the search structure terminal to the navigation satellite and information about the corresponding navigation satellite measured by the navigation chip from the rescue signal. And means for determining the position of the search structure terminal by integrating the distance information and the navigation satellite information.

The present invention provides distance information measured from a search structure satellite using a Doppler effect from a beacon signal of a search structure terminal, and distance information measured and transmitted from a navigation chip of a search structure terminal using a Doppler effect from one or more navigation signals received. Integrate to position. The distance information measured by the navigation chip is transmitted by the distress beacon signal together with the information of the corresponding navigation satellite. On the other hand, when the number of visible satellites is four or more, it switches to the normal positioning mode.

According to the configuration of the present invention as described above, even if only one or more navigation satellites enter the visible range, it is possible to immediately measure the position of the distress. Existing methods require at least 1.5 hours of time for evacuation of the distress, and in the case of the navigation navigation system equipped with the navigation chip, when the number of visible navigation satellites is limited, the speed and accuracy of the evacuation of the distress is limited. Speed and accuracy can be improved.

The above objects, features, and advantages will be described in detail with reference to the accompanying drawings, whereby those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure and network connection relationship of the distress person position measuring apparatus by this invention. As shown, the distress position measurement system to which the present invention is applied is a search rescue terminal 100, a search rescue ground station 110, a navigation satellite 120, a navigation satellite 120, a search rescue satellite 130, a rescue center ( 140).

First, the search structure terminal 100 includes a communication unit 102, a navigation chip 104, a navigation signal processing unit 106, and a search structure message processing unit 108.

The search rescue ground station 110 for measuring the position of the distress includes a communication unit 112, a rescue signal message processing unit 114, and a distress position measuring unit 116. The communication unit 112 receives the rescue signal 154 from the search rescue terminal 100 via the search rescue satellite 130, and searches the search rescue terminal 130 from the search rescue satellite 130 measured by the search rescue satellite 130. Distance information up to 100) is received. The distance information from the search structure satellite 130 to the search structure terminal 100 is measured by the search structure satellite 130 using the Doppler effect on the structure signal of the search structure terminal 100. The rescue signal message processor 114 extracts, from the rescue signal 154, the distance information from the search structure terminal 100 measured by the navigation chip 104 to the navigation satellite 120 and information on the corresponding navigation satellite. The distance information from the search structure terminal 100 to the navigation satellite 120 is measured by the navigation chip 104 using the Doppler effect from the navigation signals 150a and 150b transmitted from the navigation satellite 120. The distress position measuring unit 116 combines the distance information and the navigation satellite information to determine the position of the search rescue terminal 100 (ie, the position of the distress). On the other hand, if the number of visible satellites of the navigation satellite 120 is 4 or more, the mobile terminal 120 is switched to the normal positioning mode and the position of the search structure terminal 100 is determined using the distance information and the navigation satellite information measured by the navigation chip 104. Decide The location of the search and rescue terminal 100 determined in this way is notified to the rescue center 140 via the communication unit 112, so that the rescue operation for the distress is made.

2 is a flowchart of a distress position measurement method according to the present invention.

First, the rescue signal 154 is received from the search rescue terminal 100 via the search rescue satellite 130 (S202).

Next, the distance information from the search structure terminal 100 measured by the navigation chip 104 to the navigation satellite 120 and the information about the corresponding navigation satellite are extracted from the structure signal 154 (S204). The distance information from the search structure terminal 100 to the navigation satellite 120 is measured by the navigation chip 104 using the Doppler effect from the navigation signals 150a and 150b transmitted from the navigation satellite 120.

Next, the distance information from the search structure satellite 130 measured by the search structure satellite 130 to the search structure terminal 100 is received from the search structure satellite 130 (S206). The distance information from the search rescue satellite 130 to the search rescue terminal 100 is measured by the search rescue satellite 130 using the Doppler effect on the rescue signal 152 of the search rescue terminal 100.

Next, the location of the search structure terminal 100 is determined by integrating the distance information and the navigation satellite information (S208). Even when a navigation signal 150 is received from fewer than four navigation satellites 120 by the navigation chip-mounted navigation structure terminal 100 and the position thereof cannot be accurately measured, the present invention provides a navigation structure 130 through the navigation structure satellite 130. At least one navigation using distance information measured from the beacon signal 152 of the search and rescue terminal 100 of the distress and the Doppler of the navigation satellite 120 measured by the search and rescue terminal 100. If only signal 150 is received, two-dimensional positioning is performed immediately.

That is, when the navigation structure terminal 100 in which the navigation chip 104 is embedded is in a distress situation and there are fewer than four visible navigation satellites 120, the navigation signal 150 received from the visible satellite is processed to process the corresponding navigation system. The distance of the satellite is measured using Doppler and sent to the message processing unit 108 to be included in the message and transmitted to the search structure satellite 130 as the beacon signal 152 through the communication unit 102. The received rescue beacon signal 152 is sent to the search rescue ground station 110 and processed by the rescue signal message processing unit 114, and then the signal processing received from the distance information measured by the search rescue satellite 130 and the visible navigation satellite. Process the distance information together to determine the location of the distress. On this basis, the rescue center 140 dispatches a rescue team.

When the number of visible satellites of the navigation satellite is four or more, the mobile terminal 100 is switched to the normal mode to determine the position of the search structure terminal 100 using the distance information and the navigation satellite information measured by the navigation chip 104. Positioning of the terminal 100 is performed by the navigation chip 104 which receives and processes the navigation signal 150 from the navigation satellite 120 in the search structure terminal 100. The information is transmitted to the search structure satellite 130 in the beacon signal 152 of the terminal. Thus, the location of the distress is immediately confirmed and a rescue team is dispatched to rescue the distress.

Next, the determined location of the search rescue terminal 100 is notified to the rescue center 140 (S210). The rescue center 140 refers to the location of the notified search rescue terminal 100 (ie, the location of the distress) to perform rescue operations for the distress.

On the other hand, the method of the present invention as described above can be written in a computer program. And the code and code segments constituting the program can be easily inferred by a computer programmer in the art. In addition, the written program is stored in a computer-readable recording medium (information storage medium), and read and executed by a computer to implement the method of the present invention. The recording medium includes all types of computer-readable recording media (tangible media such as CD and DVD as well as intangible media such as carrier waves).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure and network connection relationship of the distress person position measuring apparatus by this invention.

2 is a flowchart of a distress position measurement method according to the present invention.

Claims (11)

In the method for measuring the position of the distress using a search rescue terminal equipped with a navigation chip, Receiving a rescue signal from the search rescue terminal via a search rescue satellite; Extracting the distance information from the search structure terminal to the navigation satellite and the information about the corresponding navigation satellite measured by the navigation chip from the structure signal; Receiving distance information from the search structure satellite to the search structure terminal measured in the search structure satellite; Determining the location of the search structure terminal by integrating the distance information and the navigation satellite information; Measuring method of distress position, characterized in that provided. The method of claim 1, The rescue signal of the search rescue terminal is a method of measuring the distress position, characterized in that consisting of a beacon signal. The method of claim 1, The distance information from the search structure satellite to the search structure terminal is measured by the search structure satellite using the Doppler effect on the rescue signal of the search structure terminal. The method of claim 1, The distance information from the search structure terminal to the navigation satellite is measured by the navigation chip using the Doppler effect from the navigation signal transmitted from the navigation satellite. The method of claim 1, And determining the position of the search and rescue terminal using the distance information measured by the navigation chip and the navigation satellite information when the number of visible satellites of the navigation satellite is four or more. The method of claim 1, And distributing the determined location of the search and rescue terminal to a rescue center. In the device for measuring the position of the distress using a search rescue terminal equipped with a navigation chip, A communication unit for receiving a rescue signal from the search structure terminal via a search structure satellite and receiving distance information from the search structure satellite to the search structure terminal measured by the search structure satellite; Means for extracting distance information from the search structure terminal to the navigation satellite and information about the navigation satellite measured by the navigation chip from the rescue signal; Means for integrating the distance information and the navigation satellite information to determine the position of the search and rescue terminal; A device for measuring the distress position, which is provided. The method of claim 7, wherein The distress signal of the search rescue terminal is a device for measuring the distress position, characterized in that the beacon signal. The method of claim 7, wherein The distance information from the search structure satellite to the search structure terminal is measured by the search structure satellite using the Doppler effect on the rescue signal of the search structure terminal. The method of claim 7, wherein The distance information from the search structure terminal to the navigation satellite is measured by the navigation chip using the Doppler effect from the navigation signal transmitted from the navigation satellite. A computer-readable recording medium for recording a program in which a method for measuring the location of a distress using a navigation rescue terminal equipped with a navigation chip is implemented. Receiving a rescue signal from the search rescue terminal via a search rescue satellite; Extracting the distance information from the search structure terminal to the navigation satellite and the information about the corresponding navigation satellite measured by the navigation chip from the structure signal; Receiving distance information from the search structure satellite to the search structure terminal measured by the search structure satellite; Determining the location of the search structure terminal by integrating the distance information and the navigation satellite information; The recording medium, characterized in that performed.

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