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WO2008012377A1 - Système de localisation utilisant des radiobalises personnelles - Google Patents

Système de localisation utilisant des radiobalises personnelles Download PDF

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Publication number
WO2008012377A1
WO2008012377A1 PCT/ES2006/070119 ES2006070119W WO2008012377A1 WO 2008012377 A1 WO2008012377 A1 WO 2008012377A1 ES 2006070119 W ES2006070119 W ES 2006070119W WO 2008012377 A1 WO2008012377 A1 WO 2008012377A1
Authority
WO
WIPO (PCT)
Prior art keywords
beacons
radio beacons
personal
locator system
receiver
Prior art date
Application number
PCT/ES2006/070119
Other languages
English (en)
Spanish (es)
Inventor
Juan José DÍAZ MENÉNDEZ
Sebastián RODRÍGUEZ NÚÑEZ
Lucio HERNÁNDEZ GARCÍA
Original Assignee
Indra Sistemas, S.A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Indra Sistemas, S.A filed Critical Indra Sistemas, S.A
Priority to PCT/ES2006/070119 priority Critical patent/WO2008012377A1/fr
Publication of WO2008012377A1 publication Critical patent/WO2008012377A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/68—Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
    • G01S1/685—Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information using pulse modulation, e.g. pulse frequency modulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00—Life-saving in water
    • B63C9/0005—Life-saving in water by means of alarm devices for persons falling into the water, e.g. by signalling, by controlling the propulsion or manoeuvring means of the boat

Definitions

  • the present invention relates to a location system that uses personal radio beacons, and that has a special application in the tasks of search and rescue of people and objects.
  • the waveform of the distress signal at 121.5 MHz or 243 MHz is defined by the recommendation of the International Telecommunication Union ITU-R M.690-1 ("Technical characteristics ⁇ e the ⁇ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
  • ETSI EN 300 152-1 “Electromagnetic compatibility and Radio spectrum Matters (ERM); Maritime Emergency Position Indicating Radio Beacons (EPIRBs) intended for use on the frequency 121.5 MHz or the frequencies 121.5 MHz and 243 MHz for homing purposes only; Part 1: Technical characteristics and methods of measurement ") is an example of how the international community is adopting the waveform defined by ITU-R recommendation M.690-1 for" man-in-the-water "incidents.
  • radio-beacon locator systems that use digital signals and have substantial differences with respect to the systems described above for incidents of the ⁇ man-to-water ”type (also called“ proximity ”locator systems.)
  • claims beacons. (such as shipwrecks) are also used in the maritime field and are designed to be released by themselves in case of sinking of the ship.
  • the distress signal is transmitted with the power necessary to reach the CORPAS-SARSAT satellite system, which it picks up the distress signal and relays it later when it passes over certain stations on the ground.
  • the distress signal is emitted at 406 MHz ⁇ there are also satellites operating at 121.5 MHz that are expected to cease their service at this frequency).
  • Relief of this type ⁇ e sinister differ from the actions in ios man-to-water incidents, since In these, the incident must be resolved by the ship itself without warning the CORPAS-SARSAT satellite system (reserved for the resolution of claims), whose speed of response is substantially less than that of the ship itself.
  • EPIRB beacons (emergency position indicating beacon: "Emergency Position Information Radio Beacon”).
  • EPIRB radio beacons transmit data information in 406 MHz to CORPAS-SARSAT satellites using a digital signal other than the analog distress signal of personal radio beacons.
  • This signal from EPIRB radio beacons is defined by the recommendation of the International Telecommunication Union ITU-R M.633-2 ("Transmission characteristics of a satellite emergency position-indicating radio beacon ⁇ satellite EPIRB) system operating through a satellite system in the 406 MHz band ").
  • U.S. Pat. US 6388617 provides an EPIRB type beacon, of those used to send an emergency signal from a ship to the satellite system when it is in trouble and requires help.
  • Said patent which, as indicated, is oriented towards EPIRB type beacons, instead of personal beacons (also known by its acronym in English as PLB: "Personal Locator Beacon”), makes use of the GPS navigation system (" Global positioning system ", or global positioning system) to obtain information geographical posi ⁇ tion.
  • GPS navigation system Global positioning system
  • This patent proposes a system that reduces the consumption of the beacon battery while retaining recent data from the information obtained by GPS in the beacon's memory, which allows the battery life to be extended.
  • radio beacons in 4ub ivihiz / 121.5 MHz, which are preferably used in terrestrial applications for assistance in mountain climbing or hiking incidents. These are radio beacons that are manually activated by the user, and that transmit the signal from 406 MHz relief to be captured by the CORPAS-SARSAT satellite system. This type of radio beacon also emits, with less power, a 121.5 MHz signal that is used for the final location in proximity. To make use of this service it is necessary to register the bearer of the radio beacon with the NESDIS (National Environmental Satellite, Data and Information Device). It is a service of the US government. through NOAA (National Oceanic & Atmospheric Administration).
  • radio beacons in general, are not suitable for "man-to-water” applications, since their signal is not received on the ship's bridge and they are not usually equipped with an automatic activation mechanism in case of immersion .
  • radio beacons personal or EPIRB
  • EPIRB electronic photometric beacon
  • the analog distress signal does not carry more information than a characteristic audio signal, allowing receivers in 121.5 MHz or 243 MHz to demodulate an alarm signal at the time of the "man in the water” incident.
  • this type of auditory signal only allows the alert without facilitate search and location tasks
  • the Spanish patent ES 2014359 (“Alarm system and location by radio signals”) is an example of a transmitter-receiver system with acoustic and / or optical alarm signal and which allows to know in which direction the castaway is.
  • the object of the present invention is to provide a localization system in proximity by means of personal beacons that allows to identify and position separately, and without interference, the emissions of several simultaneously active beacons, all immediately.
  • the invention relates to a locator system that uses personal radio beacons, which also comprises at least one controller-receiver device comprising an antenna and a GPS antenna-receiver and is associated with a visualization means, in which each of said Personal radio beacons comprise an antenna and a GPS antenna-receiver, so that the personal radio beacons, when activated, can emit an analog distress signal whose modulating wave consists of audio sweeps.
  • each beacon By inserting binary modulating signals into the silence zones of the analog distress signal and the fact that the moment of transmission of said signals for each radio beacon is governed by the GPS system, it is achieved that each beacon transmits the corresponding additional signal at a designated instant, thereby avoiding interference between the emissions of several simultaneously active radio beacons.
  • the analog distress signal may be 121.5 MHz or 243 MHz.
  • an additional advantage of the system is that it can be used with the receivers currently in service at the frequencies of 121.5 MHz or 243 MHz.
  • the binary modulating signals comprise geogratic position coordinate data and the instant of the radio beacon activation.
  • the binary modulating signals are FSK ("Frequency Shift Keying") signals.
  • the binary modulating signals are PSK ("Phase Shift Keying") signals.
  • the shape of the modulating wave of the analog distress signal consists of a descending audio frequency sweep in a range not less than 700 Hz, between 1600 Hz and 300 Hz, and with a sweep repetition frequency of 2 to 4 times per second.
  • the descending audio frequency scan is performed between 1200 Hz and 400 Hz.
  • the display means is a radar screen.
  • the display means is a screen with user interface.
  • the radio beacons are integrated into a garment of a vest or similar type.
  • the radio beacons are activated by an automatic water immersion activation mechanism.
  • Figure 1 shows a basic scheme of the locator system of the invention, with a personal beacon.
  • Figure 2 shows a graph of the frequency as a function of time, corresponding to the analog distress signal and the inserts of the data signals in the silence zones of the analog distress signal.
  • Figure 1 illustrates in a very schematic way the locator system of the invention, in which a personal radio beacon and a receiver have been represented.
  • the controller-receiver device may consist of a panel computer that integrates the receiver capable of receiving the analog signal from the radio beacons.
  • Said device may further comprise an antenna, a GPS antenna-receiver (which, in marine salvage applications, allows to know the position of the vessel) and be associated with a display means (which can be, for example, a screen with user interface) . In this screen you can locate, for example, the geographical position information transmitted by the radio beacons.
  • the controller-receiving device can also, for ahem ⁇ ple, provide the information received by the personal radar screen beacon boat, allowing to concentrate all the graphic representation on a ma ⁇ sists.
  • each of the personal radio beacons comprises an antenna and a GPS antenna-receiver.
  • personal radio beacons When personal radio beacons are activated, they emit an analog distress signal whose modulating wave consists of descending audio frequency sweeps (they are represented graphically in Figure 2 with the indication "Audio") separated by zones of silence. That analog signal is received and demodulated by the controller-receiver device.
  • the radio beacon's GPS antenna receiver allows obtaining various additional information, such as the precise Instances of occurrence (or "tics") of the seconds (that is, the PPS signal, in English "Pulse Per Second", of the GPS system).
  • binary modulating signals (represented as DATA 1, DATA 2, etc.) are inserted, respectively, from radio beacons 1, 2 , etc. These signals carry data with the various additional information obtained through the GPS antenna-receiver of the corresponding radio beacon.
  • the transmission time for each radio beacon is governed by the time information provided by the GPS system.
  • Said binary modulator signals are also transmitted to the controller-receiver device, which can also receive and demodulate them.
  • the analog distress signal is transmitted in 121.5 MHz or 243 MHz, as established by ITÜ-R M.690-1.
  • the data comprising the binary modulating signals can be the coordinates of geographical position (longitude and latitude) and the instant of activation of the beacon. In the case of marine rescue applications, this instant of activation of the beacon must coincide with the moment of immersion of the beacon in the water.
  • the binary modulating signals (or data signals) indicated above may be, for example FSK ("Frequency Shift Keying") signals, PSK ("Phase Shift Keying") signals, etc.
  • FSK Frequency Shift Keying
  • PSK Phase Shift Keying
  • the modulating waveform signal in consis relief ⁇ will sweep downward audio not less than 700 Hz range between 1600 and 300 Hz, and a repeat sweep frequency of 2 to 4 times according to do.
  • a typical multiplexing of this modulating waveform is said sweeps separated by zones of silence, as can be seen in Figure 2.
  • said descending audio-frequency scan is performed between 1200 Hz and 400 Hz
  • the locator system of the invention has multiple applications, such as the search and rescue of people who accidentally fall into the sea from a vessel (maritime rescue), the search and retrieval of objects (in military applications, for example, training torpedoes), the control of the members of forest patrols in firefighting mission and, in general, the simultaneous control of the position of the components of any group of mobile elements.
  • the personal radio beacon would be integrated into a garment of the castaway, usually the life jacket.
  • the controller-receiver device would be located on the ship's bridge, which could receive both the 121.5 MHz or 243 MHz analog distress signal and personal radio beacon data signals, such as its geographical position or the instant of falling into the water.
  • personal radio beacons would be activated by means of an automatic water immersion activation mechanism of those commonly used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Transmitters (AREA)

Abstract

Un système de localisation utilisant des radiobalises personnelles comprend au moins un dispositif de commande réception dotée d'une antenne et d'une antenne de réception GPS, associé à un moyen de visionnement. Chaque radiobalise personnelle comprenant une antenne et une antenne de réception GPS émet un signal analogique de secours dont l'ondede modulation est formée de balayages d'audiofréquence descendante séparés par des zones de silence que l'on peut recevoir et moduler moyennant le dispositif de commande réception. Dans les zones de silence du signal analogique de secours, sont insérés respectivement des signaux de modulation binaires provenant des radiobalises respectives qui transportent des données à informations supplémentaires obtenues par l'antenne de réception GPS de la radiobalise. Le moment de la transmission pour chaque radiobalise dépendra de l'information temporelle du système GPS. On peut les recevoir et les moduler avec le dispositif de commande réception.
PCT/ES2006/070119 2006-07-28 2006-07-28 Système de localisation utilisant des radiobalises personnelles WO2008012377A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2006/070119 WO2008012377A1 (fr) 2006-07-28 2006-07-28 Système de localisation utilisant des radiobalises personnelles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2006/070119 WO2008012377A1 (fr) 2006-07-28 2006-07-28 Système de localisation utilisant des radiobalises personnelles

Publications (1)

Publication Number Publication Date
WO2008012377A1 true WO2008012377A1 (fr) 2008-01-31

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7612716B2 (en) 1999-03-05 2009-11-03 Era Systems Corporation Correlation of flight track data with other data sources
US7667647B2 (en) 1999-03-05 2010-02-23 Era Systems Corporation Extension of aircraft tracking and positive identification from movement areas into non-movement areas
US7739167B2 (en) 1999-03-05 2010-06-15 Era Systems Corporation Automated management of airport revenues
US7777675B2 (en) 1999-03-05 2010-08-17 Era Systems Corporation Deployable passive broadband aircraft tracking
US7782256B2 (en) 1999-03-05 2010-08-24 Era Systems Corporation Enhanced passive coherent location techniques to track and identify UAVs, UCAVs, MAVs, and other objects
US7889133B2 (en) 1999-03-05 2011-02-15 Itt Manufacturing Enterprises, Inc. Multilateration enhancements for noise and operations management
US7908077B2 (en) 2003-06-10 2011-03-15 Itt Manufacturing Enterprises, Inc. Land use compatibility planning software
US7965227B2 (en) 2006-05-08 2011-06-21 Era Systems, Inc. Aircraft tracking using low cost tagging as a discriminator
US8072382B2 (en) 1999-03-05 2011-12-06 Sra International, Inc. Method and apparatus for ADS-B validation, active and passive multilateration, and elliptical surveillance
US8203486B1 (en) 1999-03-05 2012-06-19 Omnipol A.S. Transmitter independent techniques to extend the performance of passive coherent location
US8446321B2 (en) 1999-03-05 2013-05-21 Omnipol A.S. Deployable intelligence and tracking system for homeland security and search and rescue

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Publication number Priority date Publication date Assignee Title
EP0107596A1 (fr) * 1982-10-25 1984-05-02 Société d'Etudes, de Recherches, de Travaux d'Organisation et de Gestion S.E.R.T.O.G. Balise de détresse pour naufrage
US4888595A (en) * 1986-11-13 1989-12-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Acquisition signal transmitter
US20020097157A1 (en) * 2001-01-25 2002-07-25 Piri John L. Device and method for alerting to the need to recover something, identifying it, and determining its location for purposes of recovery

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EP0107596A1 (fr) * 1982-10-25 1984-05-02 Société d'Etudes, de Recherches, de Travaux d'Organisation et de Gestion S.E.R.T.O.G. Balise de détresse pour naufrage
US4888595A (en) * 1986-11-13 1989-12-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Acquisition signal transmitter
US20020097157A1 (en) * 2001-01-25 2002-07-25 Piri John L. Device and method for alerting to the need to recover something, identifying it, and determining its location for purposes of recovery

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Title
"Airborne Decoder Enhances SAR Effectiveness", FARNBOROUGH INTERNATIONAL AIRSHOW, 2006, Retrieved from the Internet <URL:http://www.farnborough.com/media/news/news-article.asp?n=2288> *
"Emergency Beacon Evaluation Summary", EQUIPPED TO SURVIVE FOUNDATION, 2005, Retrieved from the Internet <URL:http://www.equipped.com/406_GPS_beacon_test_2005_summary.htm> *
"Specification for COSPAS-SARSAT 406 MHz Distress Beacons", COSPAS-SARSAT, no. 3, November 2005 (2005-11-01) *
"Vecta 2 Direction Finder", ACR ELECTRONICS, Retrieved from the Internet <URL:http://www.acrelectronics.com/vecta2/vecta2.html> *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7612716B2 (en) 1999-03-05 2009-11-03 Era Systems Corporation Correlation of flight track data with other data sources
US7667647B2 (en) 1999-03-05 2010-02-23 Era Systems Corporation Extension of aircraft tracking and positive identification from movement areas into non-movement areas
US7739167B2 (en) 1999-03-05 2010-06-15 Era Systems Corporation Automated management of airport revenues
US7777675B2 (en) 1999-03-05 2010-08-17 Era Systems Corporation Deployable passive broadband aircraft tracking
US7782256B2 (en) 1999-03-05 2010-08-24 Era Systems Corporation Enhanced passive coherent location techniques to track and identify UAVs, UCAVs, MAVs, and other objects
US7889133B2 (en) 1999-03-05 2011-02-15 Itt Manufacturing Enterprises, Inc. Multilateration enhancements for noise and operations management
US8072382B2 (en) 1999-03-05 2011-12-06 Sra International, Inc. Method and apparatus for ADS-B validation, active and passive multilateration, and elliptical surveillance
US8203486B1 (en) 1999-03-05 2012-06-19 Omnipol A.S. Transmitter independent techniques to extend the performance of passive coherent location
US8446321B2 (en) 1999-03-05 2013-05-21 Omnipol A.S. Deployable intelligence and tracking system for homeland security and search and rescue
US7908077B2 (en) 2003-06-10 2011-03-15 Itt Manufacturing Enterprises, Inc. Land use compatibility planning software
US7965227B2 (en) 2006-05-08 2011-06-21 Era Systems, Inc. Aircraft tracking using low cost tagging as a discriminator

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