WO2006009955A3 - Self-calibrated path loss position estimation process, device and system - Google Patents

Self-calibrated path loss position estimation process, device and system Download PDF

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Publication number
WO2006009955A3
WO2006009955A3 PCT/US2005/021666 US2005021666W WO2006009955A3 WO 2006009955 A3 WO2006009955 A3 WO 2006009955A3 US 2005021666 W US2005021666 W US 2005021666W WO 2006009955 A3 WO2006009955 A3 WO 2006009955A3
Authority
WO
WIPO (PCT)
Prior art keywords
received
target device
signal strength
receive signal
self
Prior art date
Application number
PCT/US2005/021666
Other languages
French (fr)
Other versions
WO2006009955A2 (en
Inventor
Gary L Sugar
Tesfai Yohannes
Original Assignee
Cognio Inc
Gary L Sugar
Tesfai Yohannes
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
Priority claimed from US10/976,509 external-priority patent/US7236128B2/en
Application filed by Cognio Inc, Gary L Sugar, Tesfai Yohannes filed Critical Cognio Inc
Publication of WO2006009955A2 publication Critical patent/WO2006009955A2/en
Publication of WO2006009955A3 publication Critical patent/WO2006009955A3/en

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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements
    • 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
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0252—Radio frequency fingerprinting
    • G01S5/02521—Radio frequency fingerprinting using a radio-map
    • G01S5/02524—Creating or updating the radio-map
    • G01S5/02525—Gathering the radio frequency fingerprints
    • 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
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location

Abstract

A system, device and method (10) are provided for estimating a position of a target device (100) based on data pertaining to strength of an emission received from the target device (100). Emissions are received from the target device at each of a plurality of positions to produce receive signal strength data representative thereof. In addition, signals are received from each of a plurality of reference devices at corresponding known positions (200, 210, 220, 230) (and transmitted with known transmit powers) to produce receive signal strength data representative thereof. The position of the target device is estimated (420) based on receive signal strength data associated with received emissions from the target device and receive signal strength data associated with received signals from the reference devices. The emissions from the target device and the signals from the reference devices may be received by sensor devices (200, 210, 220, 230) at known positions.
PCT/US2005/021666 2004-06-23 2005-06-21 Self-calibrated path loss position estimation process, device and system WO2006009955A2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US58231704P 2004-06-23 2004-06-23
US60/582,317 2004-06-23
US10/976,509 US7236128B2 (en) 2004-06-23 2004-10-29 System and method for locating radio emitters using self-calibrated path loss computation
US10/976,509 2004-10-29
US64899305P 2005-01-31 2005-01-31
US60/648,993 2005-01-31
US68496605P 2005-05-27 2005-05-27
US60/684,966 2005-05-27

Publications (2)

Publication Number Publication Date
WO2006009955A2 WO2006009955A2 (en) 2006-01-26
WO2006009955A3 true WO2006009955A3 (en) 2006-04-27

Family

ID=35505126

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/021666 WO2006009955A2 (en) 2004-06-23 2005-06-21 Self-calibrated path loss position estimation process, device and system

Country Status (2)

Country Link
US (1) US7317419B2 (en)
WO (1) WO2006009955A2 (en)

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WO2006009955A2 (en) 2006-01-26
US20050285793A1 (en) 2005-12-29

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