WO2002013417A1 - Systeme de determination de la position relative - Google Patents

Systeme de determination de la position relative Download PDF

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Publication number
WO2002013417A1
WO2002013417A1 PCT/US2001/022929 US0122929W WO0213417A1 WO 2002013417 A1 WO2002013417 A1 WO 2002013417A1 US 0122929 W US0122929 W US 0122929W WO 0213417 A1 WO0213417 A1 WO 0213417A1
Authority
WO
WIPO (PCT)
Prior art keywords
location
user
relative position
determination service
location determination
Prior art date
Application number
PCT/US2001/022929
Other languages
English (en)
Inventor
William E. Clise
R. Michael Crowson
Original Assignee
Locate Networks, Inc.
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 Locate Networks, Inc. filed Critical Locate Networks, Inc.
Priority to AU2001280666A priority Critical patent/AU2001280666A1/en
Publication of WO2002013417A1 publication Critical patent/WO2002013417A1/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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • G01S19/51—Relative positioning
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/14—Receivers specially adapted for specific applications
    • G01S19/17—Emergency applications
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/40—Correcting position, velocity or attitude
    • G01S19/41—Differential correction, e.g. DGPS [differential GPS]

Definitions

  • the present invention relates to location detection systems in general, and in particular to GPS based location detection systems. Background of the Invention
  • a receiver receives highly accurate timing signals transmitted from three or more overhead satellites. Based on the relative time at which signals are received from each of the satellites, the receiver can compute its location with a high degree of precision. While the GPS system has revolutionized the ability of people to determine their own location, no current GPS system exists that allows a person to determine their relative location with respect to another object or person. For example, rescue personnel cannot currently use a GPS system to accurately inform them how far they are away from a person needing aid. Therefore, there is a need for a system that allows a user to determine the relative location between two GPS receivers or the relative location between a GPS receiver and a known reference point.
  • GPS global positioning satellite
  • a location determination service receives a request to determine a relative position between a first and second user or the relative position between the first or second user and a known reference point.
  • each of the first and second users has a location detection device that receives GPS signals from a number of GPS satellites.
  • the GPS signals received by the location detection devices are forwarded to the location determination service that calculates the position of the location detection devices and calculates the relative position between the two location detection devices.
  • the relative position information is then sent back to the first or second users via a communication link.
  • the location determination system calculates the relative position of a location detection device carried by the second user and a known reference point.
  • the relative location information is transmitted back to the first or second user via a communication link.
  • FIGURE 1 is a block diagram of a location determination system that calculates the relative position of two GPS receivers and forwards the relative position information to a requestor according to a first embodiment of the present invention
  • FIGURE 2 is a block diagram of a location determination system that calculates the relative position of a GPS receiver and a reference point and forwards the relative position information to a requestor in accordance with another embodiment of the present invention.
  • FIGURE 1 illustrates a first embodiment of a relative location determination system according to the present invention.
  • a first user 10 of the system wishes to know their relative location with respect of a second user 12.
  • the first user 10 may be a parent and the second user 12 may be a child who has wandered off in an amusement park.
  • the first user 10 may be an emergency service provider and the second user 12 may be a victim requiring aid.
  • each user has a GPS-based location detection device 14, 16 that includes a GPS satellite receiver and a two-way communication device such as a two-way pager or cellular telephone.
  • a GPS-based location detection device includes a GPS satellite receiver and a two-way communication device such as a two-way pager or cellular telephone.
  • An example of a suitable location detection device is set forth in U.S. Patent Application Serial No. 09/535,932, which is herein incorporated by reference.
  • the location detection devices 14, 16 receive GPS signals from one or more overhead GPS satellites 20 and have the ability to communicate with a location determination service 30 via a wireless communication link such as a two-way paging service 32 or cellular telephone service.
  • the first user 10 When the first user 10 (i.e., a requestor) wishes to determine their relative location with respect to the second user 12, the first user activates their location detection device 14.
  • the location detection device 14 forwards the GPS signals received from the GPS satellites 20 to the location determination service 30 (such as that provided by loc8.net, the assignee of the present application) via the wireless communication link along with an identifier for the second user.
  • the location detection service 30 then generates a page or call to the location detection device 16 carried by the second user 12 asking it to return the GPS signals it receives from the GPS satellites 20.
  • the location determination system 30 calculates the latitude/longitude of the first user 10 and second user 12.
  • the latitude/longitude information is then forwarded to GIS layer and data software 36.
  • the GIS layer and data software 36 such as that provided by Objectfx of St. Paul, Minnesota, calculates the relative position of the first and second users 10, 12 from the latitude/longitude information provided.
  • the relative position information calculated by the GIS software is forwarded by the location determination service 30 to the requestor's location detection device 14, which displays it for the user.
  • the information may be formatted as a written description such as "[the second user] is located 35 feet northwest of your current location.”
  • the location detection device has an electronic compass, the relative position information may be displayed as an arrow or other icon that points in the direction of the second user 12.
  • the location determination service 30 may transmit a message to the location detection device of the second user 12 to alert them that someone is looking for them.
  • the location determination service may communicate with a differential GPS system 34 that corrects for errors in the signals transmitted from the GPS satellites.
  • the location determination service 30 may communicate with a 911 service 38 if it is desirable to forward the relative position information to emergency personnel.
  • An alternate embodiment of the present invention transmits the relative position of a user with respect to the known position of a fixed object.
  • the first user 10 or requestor does not need to have a location detection device that includes a GPS receiver.
  • the first user 10 has a cellular telephone 50 or other communication that allows user to contact the location determination service 30 via a wireless, landline or computer communication link.
  • the user 10 uses the communication device 50 to access a location determination service 30, which generates a wireless message to a second user 12 who does have a location detection device 16.
  • the location detection device 16 Upon receipt of the message from the location determination service 30, the location detection device 16 forwards the GPS signals it receives from the GPS satellites 20 back to the location determination service 30.
  • the location determination service 30 calculates the relative position of the second user 12 with respect to a known position of an object or landmark.
  • the location determination service 30 may calculate the relative location of the second user 12 with respect to the known position of the statue 56. Once the relative position information is calculated, it is transmitted back to the first user 10 via the communication link used to access the location determination system 30. The first user 10 then receives a message such as "[The second user] is located 35 feet northwest of the chicken statue 56 at the entrance of the park.” In this embodiment, the location determination service 30 has access to a database 58 including the known latitude/longitude position of one or more prominent landmarks in the neighborhood of the current position of the user 10.
  • the GPS signals received by the device may be forwarded to the location determination service 30 at the time the relative position information is requested.
  • the GPS signals allow the location determination service 30 to determine which prominent landmarks are near the current location of the user 10.
  • the user will have to use another method of providing this information to the location determination service. This may include selecting a location from a menu or list (if accessing the location determination service with a computer via a data communication link), speaking with a human operator or interacting with a voice response unit (VRU) at the location determination service if accessing the location determination service via a telephonic communication link.
  • VRU voice response unit
  • the nearest land mark can be determined based on the GPS signals received from the location detection device associated with the second user.
  • the location detection devices 14, 16 forward the GPS signals received to the location determination service 30 for calculating the latitude/longitude of their current positions.
  • they may calculate their own latitude/longitude and forward the calculated latitude/longitude to the location determination service in order to calculate the relative positions.
  • the present invention may be used to calculate a user's relative position with respect to more than one other individual or object.
  • the location determination service receives GPS signals from location detection devices carried by each team member and calculates the positions and returns the relative position information to the requestor and the team members, if desired.
  • Another use of the present invention is to track the location of movable objects. For example, a physician may need to know where a particular piece of emergency equipment is located. To provide this information, the equipment includes a location detection device. When the physician needs to know where the equipment is located, he or she contacts the location determination service with an indication of what piece of equipment they are looking for. The location determination system then initiates a page or call to the location detection device associated with the desired piece of equipment. The GPS signals received from the location detection device are used to calculate the position of the equipment with respect to known locations at a hospital etc. The location determination service then returns the relative location information back to the requestor in a form like "The defibrillator is located 10 feet southwest of the ICU entrance.”

Landscapes

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

Abstract

L'invention concerne un système de détermination de la position (30) recevant des informations de position en provenance d'un ou plusieurs appareils de détection de la position tels que des récepteurs GPS. Le système de détermination de la position (30) calcule la position relative entre le ou les appareils de détection de la position (14, 16), et renvoie les informations de position relative à un demandeur. De manière alternative, l'appareil de détermination de la position (30) peut calculer la position relative entre un appareil de détection de la position individuel et un point de référence connu.
PCT/US2001/022929 2000-08-04 2001-07-19 Systeme de determination de la position relative WO2002013417A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001280666A AU2001280666A1 (en) 2000-08-04 2001-07-19 Relative location determination system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63244100A 2000-08-04 2000-08-04
US09/632,441 2000-08-04

Publications (1)

Publication Number Publication Date
WO2002013417A1 true WO2002013417A1 (fr) 2002-02-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/022929 WO2002013417A1 (fr) 2000-08-04 2001-07-19 Systeme de determination de la position relative

Country Status (2)

Country Link
AU (1) AU2001280666A1 (fr)
WO (1) WO2002013417A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014074655A1 (fr) * 2012-11-06 2014-05-15 Michael Gurin Profil de personnalisation dynamique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593273A (en) * 1984-03-16 1986-06-03 Narcisse Bernadine O Out-of-range personnel monitor and alarm
US5021794A (en) * 1989-08-15 1991-06-04 Lawrence Robert A Personal emergency locator system
US5119504A (en) * 1990-07-19 1992-06-02 Motorola, Inc. Position aided subscriber unit for a satellite cellular system
US5146231A (en) * 1991-10-04 1992-09-08 Motorola, Inc. Electronic direction finder
US5587715A (en) * 1993-03-19 1996-12-24 Gps Mobile, Inc. Method and apparatus for tracking a moving object
US5646844A (en) * 1994-04-18 1997-07-08 Caterpillar Inc. Method and apparatus for real-time monitoring and coordination of multiple geography altering machines on a work site
US5952959A (en) * 1995-01-25 1999-09-14 American Technology Corporation GPS relative position detection system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593273A (en) * 1984-03-16 1986-06-03 Narcisse Bernadine O Out-of-range personnel monitor and alarm
US5021794A (en) * 1989-08-15 1991-06-04 Lawrence Robert A Personal emergency locator system
US5119504A (en) * 1990-07-19 1992-06-02 Motorola, Inc. Position aided subscriber unit for a satellite cellular system
US5146231A (en) * 1991-10-04 1992-09-08 Motorola, Inc. Electronic direction finder
US5587715A (en) * 1993-03-19 1996-12-24 Gps Mobile, Inc. Method and apparatus for tracking a moving object
US5646844A (en) * 1994-04-18 1997-07-08 Caterpillar Inc. Method and apparatus for real-time monitoring and coordination of multiple geography altering machines on a work site
US5952959A (en) * 1995-01-25 1999-09-14 American Technology Corporation GPS relative position detection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014074655A1 (fr) * 2012-11-06 2014-05-15 Michael Gurin Profil de personnalisation dynamique

Also Published As

Publication number Publication date
AU2001280666A1 (en) 2002-02-18

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