WO2002027348A3 - Short range spread-spectrum radiolocation system and method - Google Patents

Short range spread-spectrum radiolocation system and method Download PDF

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Publication number
WO2002027348A3
WO2002027348A3 PCT/US2001/030884 US0130884W WO0227348A3 WO 2002027348 A3 WO2002027348 A3 WO 2002027348A3 US 0130884 W US0130884 W US 0130884W WO 0227348 A3 WO0227348 A3 WO 0227348A3
Authority
WO
WIPO (PCT)
Prior art keywords
spread
spectrum
tag
item
positioning information
Prior art date
Application number
PCT/US2001/030884
Other languages
French (fr)
Other versions
WO2002027348A2 (en
Inventor
Stephen F Smith
Original Assignee
Ut Battelle Llc
Stephen F Smith
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 Ut Battelle Llc, Stephen F Smith filed Critical Ut Battelle Llc
Priority to EP01979404A priority Critical patent/EP1325347A2/en
Priority to CA002424040A priority patent/CA2424040C/en
Priority to AU1137502A priority patent/AU1137502A/en
Priority to MXPA03002680A priority patent/MXPA03002680A/en
Priority to AU2002211375A priority patent/AU2002211375B2/en
Publication of WO2002027348A2 publication Critical patent/WO2002027348A2/en
Publication of WO2002027348A3 publication Critical patent/WO2002027348A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • G01C21/206—Instruments for performing navigational calculations specially adapted for indoor navigation
    • 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
    • G01S1/04—Details
    • G01S1/06—Means for providing multiple indication, e.g. coarse and fine indications
    • 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
    • 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 short range radiolocation system and associated methods that allow the location of an item, such as equipment, containers, pallets, vehicles, or personnel, within a defined area. A small, battery powered, self-contained tag is provided to an item to be located. The tag includes a spread-spectrum transmitter that transmits a spread-spectrum code and identification information. A plurality of receivers positioned about the area receive signals from a transmitting tag. The position of the tag, and hence the item, is located by triangulation. The system employs three different ranging techniques for providing coarse, intermediate, and fine spatial position resolution. Coarse positioning information is provided by use of direct-sequence code phase transmitted as a spread-spectrum signal. Intermediate positioning information is provided by the use of a difference signal transmitted with the direct-sequence spread-spectrum code. Fine positioning information is provided by use of carrier phase measurements. An algorithm is employed to combine the three data sets to provide accurate location measurements.
PCT/US2001/030884 2000-09-29 2001-09-26 Short range spread-spectrum radiolocation system and method WO2002027348A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01979404A EP1325347A2 (en) 2000-09-29 2001-09-26 Short range spread-spectrum radiolocation system and method
CA002424040A CA2424040C (en) 2000-09-29 2001-09-26 Short range spread-spectrum radiolocation system and method
AU1137502A AU1137502A (en) 2000-09-29 2001-09-26 Short range spread-spectrum radiolocation system and method
MXPA03002680A MXPA03002680A (en) 2000-09-29 2001-09-26 Short range spread-spectrum radiolocation system and method.
AU2002211375A AU2002211375B2 (en) 2000-09-29 2001-09-26 Short range spread-spectrum radiolocation system and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/676,401 US6556942B1 (en) 2000-09-29 2000-09-29 Short range spread-spectrum radiolocation system and method
US09/676,401 2000-09-29

Publications (2)

Publication Number Publication Date
WO2002027348A2 WO2002027348A2 (en) 2002-04-04
WO2002027348A3 true WO2002027348A3 (en) 2002-08-22

Family

ID=24714356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/030884 WO2002027348A2 (en) 2000-09-29 2001-09-26 Short range spread-spectrum radiolocation system and method

Country Status (6)

Country Link
US (1) US6556942B1 (en)
EP (1) EP1325347A2 (en)
AU (2) AU2002211375B2 (en)
CA (1) CA2424040C (en)
MX (1) MXPA03002680A (en)
WO (1) WO2002027348A2 (en)

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Also Published As

Publication number Publication date
WO2002027348A2 (en) 2002-04-04
CA2424040C (en) 2005-05-17
EP1325347A2 (en) 2003-07-09
AU2002211375B2 (en) 2006-04-13
US6556942B1 (en) 2003-04-29
MXPA03002680A (en) 2003-10-15
CA2424040A1 (en) 2002-04-04
AU1137502A (en) 2002-04-08

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