KR101345591B1 - Rescue signal pattern change type beacon and rescue signal transmitting method thereof - Google Patents

Abstract

A distress signal pattern change type beacon given in the present invention includes a control unit (13) which generates a distress message having a certain transmitting power, frequency, and repeating cycle, receives a response message corresponding to the distress message from a satellite, changes the distress message to a high transmitting power distress message of which the transmitting power and repeating cycle are maximized if the location of the satellite is identified or if not, to a low transmitting power distress message of which the transmitting power and repeating cycle are minimized. By doing so, the transmitting method of a distress message in distress can be changed in various ways, thereby improving the initial distress signal detecting efficiency at a satellite as well as maintaining the distress signal operation around the clock as a second generation beacon (10, beacon). [Reference numerals] (11) Distress message generating unit;(12) Distress signal sending unit;(13) Control unit;(14) GPS receiving unit;(15) Response link message decoding unit;(16) Geographic information unit

Description

Rescue Signal Pattern Change type Beacon and Rescue Signal Transmitting Method

The present invention relates to a beacon for distress signal transmission, and in particular, the performance of the search structure can be greatly improved by improving the initial distress signal detection performance in a distress situation and maintaining the distress signal operating time for at least 24 hours. The present invention relates to a distress signal pattern change type beacon and a distress signal transmitting method thereof.

In general, ships, planes, and individuals have beacons so that distress alert signals of beacons can be sent automatically or manually during distress, and these distress signals are received using satellites to search and rescue. This can be operated.

In general, a search and rescue system (Search and Rescue) is a local user terminal of a terrestrial system that recognizes a distress signal received using a satellite, and information about the position of a beacon calculated or acquired by analyzing a distress signal at a receiving earth station. Together with the Mission Control Center, the Rescue Coordination Center receives information from and receives actual rescue work.

Therefore, the reception of distress signals from ships, airplanes, and individual beacons is important in the operation of the Search and Rescue system. High reception is of paramount importance, especially distress signal transmission operations that can last for at least 24 hours, even in the limited battery capacity of Beacon.

Domestic patent registration 10-0771466 (October 24, 2007)

The patent document discloses a technique in which a frequency can be extended and modulated by using a coupling method between a radio wave and a radio interferometer resulting from a wavelength of an output pulse width transmitted from a disaster relief GPS terminal, from which an ultra wideband frequency band can be generated. For example.

However, the patent document simply expands and modulates the frequency band to generate an ultra wideband frequency, so that the distress signal reception aspect transmitted from the beacon may be improved to some extent, but various conditions are not satisfied when the beacon is satisfied. There are bound to be limits.

For example, the conditions that must be satisfied in Beacon are the most important aspects of improving the reception rate of satellites, especially considering the limited battery capacity, the continuous distress signal transmission of at least 24 hours or more, There is a aspect of Beacon operation.

Therefore, beacons that do not meet the requirements must meet fundamental limitations such as difficulty in positioning during distress and discontinuance of distress signals.

Accordingly, the present invention in view of the above point is to improve the initial distress signal detection performance in the satellite by various changes in the distress signal transmission method in a distress situation, while maintaining the distress signal operating time for at least 24 hours An object of the present invention is to provide a distress signal pattern change type beacon and a distress signal transmitting method thereof, which can significantly improve search structure performance.

In the distress signal pattern change type beacon of the present invention for achieving the above object, a distress message that is transmitted at a specific transmission output, frequency, and repetition period is generated, a reply message corresponding to the distress message is received from the satellite, and the distress When the position of the satellite is confirmed, the output power and the repetition period are changed to a high transmission distress signal message which is transmitted to the maximum, whereas when the position of the satellite is not confirmed, the output and the repetition period are maximized. A controller for converting the low-low distress signal into a lowered distress signal; Is included.

The controller determines whether the satellite is visible, controls the message generator for generating the distress message, controls the signal transmitter for transmitting the distress message, controls the signal receiver for receiving the reply message, and the reply. By decoding the message, the beacon control command message is extracted and the message deciphering unit is extracted, and the terrain information provided from the terrain information unit containing the terrain information is used.

The message generator generates the distress message including the location information of the beacon in a distress situation.

The controller controls the operation of the beacon according to an external reply link control command received through the satellite, and determines the presence of a visible satellite using the location and time information of the beacon.

The information extracted by the signal receiver includes a beacon control command message included in the position information calculation and navigation message of the beacon.

In addition, the distress signal transmission method using the distress signal pattern change type beacon of the present invention for achieving the above object is an initial message transmission step of distress message generated in the distress situation is sent with a specific transmission output, frequency and repetition period;

A rescue message sending step of sending a distress message changed to information of the reply message when a reply message corresponding to the distress message is received;

If the reply message is not received, a satellite checking step of checking availability of a satellite capable of receiving the distress message generated in a distress situation by using an information output of a beacon;

When the availability check of the satellite is normal, the distress message generated in the distress situation is continuously transmitted, whereas when the availability check of the satellite is abnormal, two types of new distress messages in which the transmission output and the repetition period are changed. Emergency message sending step is sent; Is included.

In the rescue message sending step, the reply message includes a beacon control command, a sending output and a repetition period, from which the modified distress message is generated and sent.

The satellite checking step may further include a satellite determination step of checking whether there is a satellite signal currently reachable from a known satellite orbit using the information, when the information is checked.

In the emergency message sending step, the new distress message is a high distress distress signal message sent out with the maximum output and the repetition period as maximum, and a low distress signal signal with the discharging output and the repetition period lowered to the maximum. .

The high distress distress message is a case where the position of the satellite is confirmed, and the low distress distress signal message is a case where the position of the satellite is not confirmed.

The low dispatch distress signal message is sent out such that the battery capacity of the beacon is maintained for at least 24 hours.

After the raw outgoing distress signal message is sent, whether the reply message is received is checked, and when the reply message is received, the process returns to the rescue message sending step, and if the reply message is not received, the sending is continued.

The high distress distress message is transmitted when the position of the satellite is confirmed while the low distress distress message is transmitted.

The high outgoing distress signal message is transmitted for a predetermined time, the reception of the reply message is checked, and when the reply message is received, the rescue message is sent back to the rescue step, while the transmission time lasts for a predetermined time, If the reply message is not received, the call is sent to the row distress distress message transmission.

The present invention improves the initial distress signal detection performance of the satellite by varying the beacon distress signal transmission method in a distress situation, the search and rescue system (Search and Rescue) can be operated quickly and efficiently It has an effect.

 In addition, the present invention is operated so that the distress signal transmission of the beacon (Beacon) in distress situation is maintained for at least 24 hours in consideration of the limited battery capacity, the search and rescue system (Search and Rescue) can be continuously operated, in particular rescue time By greatly increasing the life saving probability is also greatly improved.

In addition, the beacon of the present invention improves initial distress signal detection performance in a distress situation and simultaneously maintains the distress signal operating time for at least 24 hours, thereby overcoming all the limitations of the first generation beacon. It can be upgraded to the second generation Beacon.

In addition, since the operation method applied to the beacon of the present invention is applied to the first generation beacon, it is also easy to secure backward compatibility with the first generation beacon.

1 is a block diagram of a distress signal pattern change type beacon according to the present invention, Figures 2 and 3 is a flow chart of a distress signal transmission method using a beacon (Beacon) according to the present invention, Figure 4 is a present invention According to the present invention, a smooth reception and rescue operation of the distress signal is progressed. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.

1 shows a configuration of a distress signal pattern change type beacon according to the present embodiment.

As shown, the beacon 10 (Beacon) is a message generator 11 for generating a distress message, a signal transmitter 12 for transmitting the generated distress message, and functions as an upper controller to determine whether or not visible satellite A control unit 13, a signal receiving unit 14 for extracting a beacon control command message, a message decoding unit 15 for decoding the extracted message, and a terrain information unit 16 incorporating terrain information.

The beacon 10 (Beacon) is provided by the ship (A), the plane (B) and the individual (C), respectively.

The distress message generated by the message generator 11 includes location information of the beacon 10 in a distress situation. The signal transmitter 12 transmits the generated distress message at a predetermined output and repetition period. The controller 13 controls the operation of the beacon according to an external reply link control command while controlling the transmission output and the operation of the repetition period of the beacon 10, and whether the presence of the visible satellite is present using the location and time information of the beacon To judge.

The signal receiver 14 extracts the beacon control command message included in the position information calculation and navigation message of the beacon 10 from the reply link message. The message decryption unit 15 decrypts the beacon control command and external information using the message extracted from the reply link message. The terrain information unit 16 has built-in terrain information that can use the terrain information when the control unit 13 checks the visible satellite of the beacon.

2 and 3 illustrate a procedure of a distress signal transmitting method using a beacon according to the present embodiment.

Referring to FIG. 2, when the beacon recognizes a distress situation in S10, the beacon creates a distress signal message to be sent, selects a pattern to send the distress signal as shown in S20, and sends a distress signal message generated as in S30. .

Referring to FIG. 4, the control unit 13 controls the beacon 10 so that the message generator 11 generates a distress message and transmits a distress message generated by the signal transmitter 12. After selecting the output and the repetition period, the distress signal message pattern (a) is transmitted accordingly.

At this time, the distress signal message pattern (a) transmitted from the signal transmitter 12 has a frequency of 406 MHz and has a repeated period.

After checking the discharging time of the distress signal message sent from the beacon as in S40, it is checked whether the beacon has received a reply message for the distress signal message made during the predetermined discharging time as in S50.

At this time, the transmission time (TT) of the distress signal message pattern is a specific transmission stop time (ET, Expired Time), and the condition is ET> TT.

If the reply message of the beacon is not received, the beacon stops transmitting the distress signal message pattern (a) and switches to the step of S100. The steps of S100 are described in detail later.

On the other hand, if the reply message of the beacon is made, the beacon decrypts the information contained in the received reply message, such as S60.

As a result of decrypting the reply message information, when a change to the distress signal message pattern (a) is required, the reply message information is changed from the existing distress signal message pattern (a) as shown in S70, and the changed message is rescued as shown in S80. Send again until this is done.

In general, the reply message information includes a transmission output and a repetition period, which are beacon control commands, and by decoding the beacon, the beacon transmits a distress signal at the transmission output and repetition period specified in the control command.

As described above, a series of processes performed when the reply message of the beacon is made can be seen through FIG. 4.

As shown, when the satellite 20 receives the distress signal message pattern (a) transmitted from the beacon 10, the satellite 20 transmits the received distress signal message to the terrestrial receiving earth station 30, The receiving earth station 30 calculates or obtains the position of the beacon 10 from the distress signal message received from the satellite 20 and transmits it to the mission control headquarters 40.

The mission control center 40 loads the position and other related information of the acquired beacon 10 and sends it to the uplink transmitter 50 as a reply message, and the uplink transmitter 50 is provided by the mission control center 40. The reply message (b) is sent to the satellite 20, and the satellite 20 sends the reply message (b) received from the uplink transmitter 50 to the reply message (b) through its return-link. After the adjustment is sent to the beacon 10, the reply message (b) is received from the beacon (10).

At the same time, the mission control headquarters 40 sends the rescue command message c to the restructuring headquarters 60, and the restructuring headquarters 60 sends the rescuer 70 in accordance with the contents of the rescue command message c. Send out the necessary distress rescue.

As such a process is performed, a quick rescue operation using the beacon 10 may be performed in a search and rescue system.

 On the other hand, S100 is a process of checking the availability of the receiving satellite when the reply message is not received in the beacon, it can be determined whether the distress signal message sent through the satellite.

It is first determined whether the distress message information PVT transmitted from the beacon is normally output as S110.

In this case, the information PVT is a position, a speed, and a time of the beacon, which can be grasped by the controller 13 of FIG. 1 checking the signal receiver 14. The information PVT is used to determine whether there is a satellite signal currently reachable from a known satellite orbit using the position and time information of the beacon 10.

If the beacon output is not normal, as determined by S110, the S200 is switched to change the distress signal pattern. The steps of S200 are described in detail later.

On the other hand, if the beacon output is normal as a result of the determination, the presence of a satellite signal that can reach or receive the distress signal output of the beacon, such as S120 is checked.

As a result of checking the satellite signal, if there is no satellite signal that can be reached or received, it is not possible to check whether the satellite is visible, so that the S200 is switched to change the distress signal pattern. The steps of S200 are described in detail later.

However, as a result of the satellite signal check, if there is a satellite signal that can be reached or received, the distress signal message pattern is continuously transmitted and then returned to S50 to check whether the beacon reply message is received. Is repeated.

At this time, the determination as to whether the satellite exists in the visible region is confirmed from the terrain information embedded in the terrain information unit 16 of FIG.

On the other hand, Figure 3 shows another operation logic of the beacon is performed when the rescue operation is not performed for the distress signal of the beacon, through which the beacon maintains a limited battery for at least 24 hours or more distress signal message at least 24 Can be sent out more than time.

S200 is a state in which the beacon distress signal message is changed to the mixed distress distress signal, and the mixed distress distress signal has a low distress distress message pattern of S2010 and a high distress distress signal message pattern of S250.

The low transmission distress signal message pattern of S210 corresponds to the case where there is no satellite signal that can be reached or received from the checked satellite, which is a low transmission distress signal message pattern (a-1) transmitted from the beacon 10 as shown in FIG. It can be seen that the state is transmitted toward any satellite 20, the reception possibility is not known.

Therefore, the low output distress signal message pattern (a-1) can reduce the battery consumption of the beacon 10 by reducing the output power and the repetition period can be maintained for at least 24 hours.

S220 is a process of determining whether a reply message is received after the low distress signal is sent. If a reply message is received, step S220 returns to step S60 and subsequent steps are sequentially performed. Outgoing distress signal transmission continues.

On the other hand, S240 checks again whether there is a satellite signal that can be reached or received from the checked satellite, and if there is a satellite signal, the S240 converts the distress signal pattern into a high distress distress signal pattern and transmits the signal as shown in S250. give.

In this case, the high transmission distress signal message pattern is composed of the maximum transmission power and repetition period of the beacon to increase the reception rate of the satellite in the visible region, the determination of whether the satellite is in the visible region is determined by the topographic information unit of FIG. It is confirmed from the terrain information embedded in (16).

As shown in S260, the high distress distress message pattern is transmitted from the beacon and lasts for a predetermined time. At this time, the transmission duration time (TT) of the high transmission distress signal message pattern is a constant period time (PT, Period Time), the condition is PT> TT.

As shown in FIG. 5, it can be seen that the high transmission distress signal message pattern (a-2) transmitted from the beacon 10 is transmitted toward a specific satellite 20-1 in which the reception possibility is known, and from this the high transmission distress The signal message pattern (a-2) may maximize the satellite reception rate of the distress signal message.

S270 is a process of determining whether a reply message is received after the high outgoing distress signal message is sent. When the reply message is received, the process returns to step S60 and subsequent steps are sequentially performed. By returning to the distress signal sending step, the beacon can reduce battery consumption as much as possible.

As described above, in the distress signal pattern change type beacon according to the present embodiment, a distress message transmitted at a specific transmission output, frequency, and repetition period is generated, a reply message corresponding to the distress message is received from the satellite, and the distress message is When the position of the satellite is confirmed, the output power and the repetition period are changed to the high transmission distress signal message which is sent out to the maximum, whereas when the position of the satellite is not confirmed, the output power and the repetition period are lowered to the maximum. By including a control unit 13 for changing the true low distress signal to distress signal, various changes in the distress signal transmission method in the distress situation, while improving the initial distress signal detection performance in the satellite while the distress signal operating time for at least 24 hours Can function as a second generation beacon 10 that can be maintained.

10: Beacon 11: Message generator
12 signal transmission unit 13 control unit
14: signal receiving unit 15: message decoding unit
16: topographic information department 20, 20-1: satellite
30: receiving earth station 40: mission control headquarters
50: uplink transmitter 60: restructuring headquarters
70: rescue

Claims (18)

A distress message which is transmitted at a specific transmission power, frequency and repetition period is generated, and a reply message corresponding to the distress message is received from the satellite, and the distress message has a maximum output power and repetition period when the position of the satellite is confirmed. A control unit for changing to a high outgoing distress signal message which is sent up and out, whereas the position of the satellite is not confirmed, a low outgoing distress signal message having the lowest output power and the repetition period;
Distress signal pattern change type beacon which comprises a.
The signal receiver of claim 1, wherein the controller determines whether the satellite is visible, controls a message generator that generates the distress message, controls a signal transmitter that transmits the distress message, and receives the reply message. And controlling the message decryption unit from which the beacon control command message is extracted by decoding the reply message, and using the terrain information provided from the terrain information unit including the terrain information.
The distress signal pattern change type beacon according to claim 2, wherein the message generating unit generates the distress message including location information of a beacon in a distress situation.
The method of claim 2, wherein the controller controls the operation of the beacon according to an external reply link control command received through the satellite, and determines whether there is a visible satellite using the location and time information of the beacon. SOS pattern change type beacon.
The distress signal pattern change type beacon of claim 2, wherein the information extracted by the signal receiver includes a beacon control command message included in the position information calculation and navigation message of the beacon.
An initial message sending step in which a distress message generated in a distress situation is sent at a specific transmission output, frequency, and repetition period;
A rescue message sending step of sending a distress message changed to information of the reply message when a reply message corresponding to the distress message is received;
If the reply message is not received, a satellite checking step of checking availability of a satellite capable of receiving the distress message generated in a distress situation by using an information output of a beacon;
When the availability check of the satellite is normal, the distress message generated in the distress situation is continuously transmitted, whereas when the availability check of the satellite is abnormal, two types of new distress messages in which the transmission output and the repetition period are changed. Emergency message sending step is sent;
Distress signal transmission method using a distress signal pattern change type beacon comprising a.
The distress signal transmitting method using distress signal pattern change type beacon according to claim 6, wherein, in the initial message transmitting step, the frequency of the distress message is a frequency of 406 MHz.
The distress using the distress signal pattern change type beacon according to claim 6, wherein in the initial message sending step, the repetition period of the distress message is a transmission time (TT), and the transmission time is a constant time. Signal transmission method.
The distress signal pattern change type beacon according to claim 6, wherein, in the discharging message sending step, the reply message includes a beacon control command transmission output and a repetition period, from which the modified distress message is generated and sent. Distress signal transmission method using.
The method of claim 6, wherein the satellite checking step comprises: a satellite judging step of checking whether there is a satellite signal currently reachable from a known satellite orbit using the information, when the information is checked;
Distress signal transmission method using a distress signal pattern change type beacon further comprising a.
The method of claim 10, wherein the information includes the position, speed, and time of the beacon.
The method of claim 6, wherein in the emergency message sending step, the new distress message is a high distress distress signal message sent out with the maximum output and the repetition period, and the row with the output output and the repetition period lowered to the maximum. Distress signal transmission method using a distress signal pattern change type beacon, characterized in that the distress signal message.
The distress signal pattern change type beacon according to claim 12, wherein the high distress distress signal is a case where the position of the satellite is confirmed and the low distress signal is a case where the position of the satellite is not identified. Distress signal transmission method.
The distress signal transmitting method using a distress signal pattern change type beacon according to claim 13, wherein the low distress signal is transmitted such that the battery capacity of the beacon is maintained for at least 24 hours.
The method according to claim 12, wherein the raw outgoing distress signal message is sent after receiving the reply message is checked, and if the reply message is received returns to the rescue message sending step, if the reply message is not received the transmission is continued Distress signal transmission method using a distress signal pattern change type beacon, characterized in that.
The distress signal transmitting method using the distress signal pattern change type beacon according to claim 12, wherein the high distress distress signal message is transmitted when the position of the satellite is confirmed while the low distress signal message is transmitted.
17. The distress signal of claim 16, wherein the high distress distress signal message is transmitted for a predetermined time, the reception of the reply message is checked, and the distress signal is returned to the distress message sending step when the reply message is received. Distress signal transmission method using pattern change type beacon.
17. The distress signal pattern change type beacon according to claim 16, wherein the high distress distress signal message is transmitted for a predetermined time, and when the reply message is not received, the high distress distress signal message is switched to the discharging of the low distress signal message. Distress signal transmission method.

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