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Title: US5150310: Method and apparatus for position detection
[ Derwent Title ]


Country: US United States of America

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14 pages

 
Inventor: Greenspun, Philip G.; Melrose, MA
Baecher, Gregory B.; Wayland, MA

Assignee: Consolve, Inc., Lexington, MA
other patents from CONSOLVE, INC. (686135) (approx. 1)
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Published / Filed: 1992-09-22 / 1989-08-30

Application Number: US1989000400354

IPC Code: Advanced: G01S 5/06;
IPC-7: G01S 3/02;

ECLA Code: G01S5/06;

U.S. Class: Current: 342/451; 701/219; 701/300;
Original: 364/516; 364/460; 364/452; 342/451;

Field of Search: 364/516,559,569,451,443,460,461,450 342/047,147,118,451 340/977,979

Priority Number:
1989-08-30  US1989000400354

Abstract:     Position detection methods and apparatus include transmitters, coupled to each object to be tracked, for transmitting signals uniquely identifying each transmitter. Receivers disposed at known locations receive the transmitted signals and generate received signals representative of the transmitted signals. Arrival-time elements, responsive to a selected zero-crossing or other event in each received signal, determine the respective arrival time of each transmitted signal at each receiver. A processor calculates differences in arrival times of the transmitted signals at each receiver, and determines the spatial position of each object with respect to the known locations of the receivers.

Attorney, Agent or Firm: Lahive & Cockfield ;

Primary / Asst. Examiners: Black, Thomas G.; Ramirez, Ellis B.

Maintenance Status: E1 Expired  Check current status

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 33 claims
Having described the invention, what is claimed as new and secured by Letters Patent is:     1. A system for determining, in real-time, the spatial position of at least one object, the system comprising
  • transmitting means including at least one transmitter coupled to said at least one object for transmitting a modulated electromagnetic radiation signal, said transmitted signal being modulated with a data bitstream including transmitter identification data and having a time-variant waveform including a selected feature,
  • receiving means, including a plurality of receivers disposed at selected known locations, for receiving said transmitted signal and for generating an electrical receive signal representative of said transmitted signal,
  • demodulation means, coupled to said receiving means, for demodulating said electrical receive signal to generate a demodulated electrical signal, and
  • processing means, coupled to said demodulation means, for identifying said at least one transmitter and calculating, in response to said demodulated electrical signal, the spatial position of said at least one object with respect to said selected known positions of said receivers, said processing means including
  • arrival-time means for processing said demodulated electrical signal to generate arrival-time signals, said arrival-time signals being representative of respective arrival times at which said electromagnetic radiation is received at respective receivers,
  • said arrival-time means including means for generating arrival time signals in response to the selected feature in said time-variant waveform, and
  • calculation means, for processing said arrival-time signals associated with said at least one object and corresponding to respective receivers, to calculate the spatial position of said at least one object with respect to said selected positions of said receivers.


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Forward References: Show 104 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (104)   |   Backward references (44)   |   Citation Link

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Foreign References:
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PDF
Publication Date IPC Code Assignee   Title
Buy PDF - 28pp DE2620809 1977-11  E02F 3/42 O & K Orenstein & Koppel AG, 1000 Berlin Einrichtung zur Positionsanzeige und zur automatischen Positionsregulierung des Grabgefaesses fuer hydraulisch betaetigte Erdbewegungsmaschinen 
Buy PDF - 14pp DE2853317 1980-06  G01S 5/00 Licentia Patent-Verwaltungs-GmbH, 6000 Frankfurt Einrichtung zur Standortbestimmung von Fahrzeugen 
Buy PDF - 16pp DE3234446 1984-04  G01S 3/14 Anders, Ruediger, Dr.-Ing., 7777 Salem, DE Mehrkanalpeiler nach dem Phasenzeitdifferenz-Interferometerprinzip 
Buy PDF - 18pp DE3311349 1984-10  G01S 1/00 Messerschmitt-Boelkow-Blohm GmbH, 8012 Ottobrunn, DE Verfahren zur Vermessung eines bewegten Koerpers im Raum 
Buy PDF DD0229866 1985-11  G01S 1/00 VEB FUNKWERK KOEPENICK,DD HYPERBELORTUNGSVERFAHREN UND ANORDNUNG ZUR DURCHFUEHRUNG DES VERFAHRENS 
Buy PDF SU0742844 1978-02  G01S 1/00 VNII GEOFIZICHESKIKH METODOV RAZVEDKI RADIO ENGINEERING SYSTEM FOR MEASURING THE DIFFERENCE IN DISTANCES 
Buy PDF- 8pp GB2076152 1981-11  G01S 3/00 KRUPP FRIED GMBH METHOD FOR DETERMINING DIRECTIONS OF INCIDENCE OF WAVE ENERGY IN A WIDE FREQUENCY RANGE RADIATED BY A PLURALITY OF TARGETS 


Other References:
  • Lee; "The Use of a Minicomputer for On-Line Control of A Taxi Fleet"; IEEE Transaction on Vehicular Technology; vol.-23, No. 3, Aug. 1974.


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