WO1999013352A2 - Systeme de telemetrie - Google Patents

Systeme de telemetrie Download PDF

Info

Publication number
WO1999013352A2
WO1999013352A2 PCT/US1998/016530 US9816530W WO9913352A2 WO 1999013352 A2 WO1999013352 A2 WO 1999013352A2 US 9816530 W US9816530 W US 9816530W WO 9913352 A2 WO9913352 A2 WO 9913352A2
Authority
WO
WIPO (PCT)
Prior art keywords
transmitters
receiver
information
transmitter
positioning
Prior art date
Application number
PCT/US1998/016530
Other languages
English (en)
Other versions
WO1999013352A3 (fr
Inventor
Randolph G. Hartman
Original Assignee
Honeywell 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 Honeywell Inc. filed Critical Honeywell Inc.
Priority to AU14489/99A priority Critical patent/AU1448999A/en
Publication of WO1999013352A2 publication Critical patent/WO1999013352A2/fr
Publication of WO1999013352A3 publication Critical patent/WO1999013352A3/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
    • 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
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems

Definitions

  • the present invention relates to range positioning systems and more particularly to range positioning systems utilizing a plurality of RF transmitters which broadcast their known position to a remote receiver which can utilize the transmitted data to calculate the position of the receiver.
  • GPS Global Positioning Systems
  • ground based receivers whose position is accurately known may be also utilized to detect any errors that exist in the satellite signals and to broadcast error signals to the receiver for use in correcting the satellite signal errors.
  • DGPS Differential Global Positioning Systems
  • GPS and DGPS have great utility for determining the position of a receiver that can receive signals from at least four of the satellites at one time (for GPS) or can receive signals from at least four of the satellites and at least one ground error calculating receiver (for DGPS), there are situations where this is not possible.
  • the present invention fulfills the need for a simple, low cost positioning system for use in a predetermined location such as remote or confined areas and that will always be able to receive transmissions from at least four transmitters simultaneously. This is achieved by mounting the plurality of receivers around the predetermined location at selected positions and encoding them with their exact location and supplying them with a common clock. The selected positions are chosen so that regardless of the receiver's position within the predetermined area, it will always be able receive signals from at least four of the transmitters.
  • the transmitters may be positioned at or near the four corners and, perhaps, placed in high positions so when the farmer with a receiver moves about the farm, he will always have a line of sight to four transmitters and thereby be able to determine his exact location.
  • the transmitters may be most anywhere so long as their transmissions are not blocked by large metal structures.
  • Figure 1 shows a conceptualized area in which a receiver is surrounded by four transmitters.
  • FIG. 1 In Figure 1, four RF transmitters, E, , E 2 , E 3 and E 4 are shown identified by reference numerals 10, 12, 14 and 16 respectively each having a transmitting antenna identified by reference numerals 20, 22, 24 and 26 respectively. While five or more transmitters may be used to assure reception, only four have been shown for simplicity.
  • a receiver 30, which may be mounted on or proximate an object, such as a tractor, whose position is desired to be known or controlled, is shown in an area, such as a farm, where the transmitters are mounted.
  • the receiver includes a receiving antenna 32 and a position monitor box 34 which will contain the necessary computer programmed to determine position from the received signals.
  • a single signal generator 50 Connected to the four transmitters 10, 12, 14 and 16 by lines 40, 42. 44 and 46 respectively is a single signal generator 50 which receives a common time based data signal from a data generator 52 connected to a single common clock 54. While the connections from the signal generator to the transmitters has been shown as hard wired, the signals may be broadcast. Several unobvious advantages accrue by the use of a single clock and signal generator. The only time differences between the various emitters is the transmission delay from the signal generator 50 to the transmitters and, since the positions of the transmitters are fixed with respect to the signal generator, these may be easily calibrated out by moving the receiver 30 to several known locations and calculating the time delays associated with each transmitter. Furthermore, using a single common clock removes any errors that might otherwise occur due to clock performance since such errors are common to all transmitters and the error is thus removed from the solution.
  • Each transmitter receives the common time based signal from signal generator 50 and operates to create a spread spectrum signal similar in characteristics to the prior art GPS satellite signals.
  • Each transmitter has a unique code to identify it and transmits its signals at a low level so as not to interfere with other RF signals in the area.
  • the program for computing the position of receiver 30 can be the same as the prior art GPS programs but may be simplified with minor modifications since there is no need to try to adjust to a common time base or compensate for clock errors nor is there normally any need to try to compensate for atmospheric aberrations.
  • the receiver 30 After setting the system up, the receiver 30 will track the transmitted signals and determine a three dimensional solution to its own position relative to the transmitters.
  • the system is easily calibrated by feeding back the position information when the receiver 30 is at, say, four known locations relative to the transmitters. For example, by moving the receiver to the four transmitter locations and taking a reading at each, any errors between the calculated position and the actual position will be known and the receiver may be calibrated to correct for them.
  • the calibration also determines the signal delay between the signal generator and the emitters and validates the location data on the signal. Once calibrated, the position information should be accurate to within very close tolerances, e.g. a decimeter. It may be desirable for the position sensor receiver to be not sensitive to the
  • near far problem i.e. the overloading from a near transmitter compared to the signal from a remote transmitter. This problem is usually considered in the design of the GPS receivers which interface to pseudolites.
  • a discussion of the "near/far” situation may be found , for example, in an paper entitled “Precision Landing Tests With Improved Integrity Beacon Pseudolites” by Stewart Cobb et al, given at the 8th International

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un système qui permet de déterminer la position tridimensionnelle d'un objet en utilisant au moins quatre émetteurs HF, dont les positions sont connues avec précision. Chaque émetteur envoie un signal de base de temps commun à un récepteur à distance situé sur ou près dudit objet. Le récepteur utilise les informations contenues dans les signaux de données pour déterminer la position de l'objet.
PCT/US1998/016530 1997-08-07 1998-08-07 Systeme de telemetrie WO1999013352A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU14489/99A AU1448999A (en) 1997-08-07 1998-08-07 Range positioning system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US90848597A 1997-08-07 1997-08-07
US08/908,485 1997-08-07

Publications (2)

Publication Number Publication Date
WO1999013352A2 true WO1999013352A2 (fr) 1999-03-18
WO1999013352A3 WO1999013352A3 (fr) 1999-05-06

Family

ID=25425883

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/016530 WO1999013352A2 (fr) 1997-08-07 1998-08-07 Systeme de telemetrie

Country Status (2)

Country Link
AU (1) AU1448999A (fr)
WO (1) WO1999013352A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008085532A2 (fr) * 2006-04-28 2008-07-17 Loctronix Corporation Système et procédé pour le positionnement dans des environnements configurés
US9455762B2 (en) 2006-04-28 2016-09-27 Telecommunication Systems, Inc. System and method for positioning using hybrid spectral compression and cross correlation signal processing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107632286A (zh) * 2017-08-07 2018-01-26 上海斐讯数据通信技术有限公司 一种移动终端的定位方法及系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004451A1 (fr) * 1982-06-07 1983-12-22 Storno A/S Systeme de controle de position
US5056106A (en) * 1990-08-02 1991-10-08 Wang James J Golf course ranging and direction-finding system using spread-spectrum radiolocation techniques
EP0502312A2 (fr) * 1991-03-06 1992-09-09 Robert Bosch Gmbh Procédé pour déterminer la position d'un récepteur radio mobile
WO1995000821A1 (fr) * 1993-06-25 1995-01-05 Omniplex, Inc. Determination de la position a l'aide d'emissions de sites cellulaires a synchronisation temporelle
US5530440A (en) * 1992-12-15 1996-06-25 Westinghouse Norden Systems, Inc Airport surface aircraft locator
US5686924A (en) * 1995-05-30 1997-11-11 Trimble Navigation Limited Local-area position navigation system with fixed pseudolite reference transmitters

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004451A1 (fr) * 1982-06-07 1983-12-22 Storno A/S Systeme de controle de position
US5056106A (en) * 1990-08-02 1991-10-08 Wang James J Golf course ranging and direction-finding system using spread-spectrum radiolocation techniques
EP0502312A2 (fr) * 1991-03-06 1992-09-09 Robert Bosch Gmbh Procédé pour déterminer la position d'un récepteur radio mobile
US5530440A (en) * 1992-12-15 1996-06-25 Westinghouse Norden Systems, Inc Airport surface aircraft locator
WO1995000821A1 (fr) * 1993-06-25 1995-01-05 Omniplex, Inc. Determination de la position a l'aide d'emissions de sites cellulaires a synchronisation temporelle
US5686924A (en) * 1995-05-30 1997-11-11 Trimble Navigation Limited Local-area position navigation system with fixed pseudolite reference transmitters

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008085532A2 (fr) * 2006-04-28 2008-07-17 Loctronix Corporation Système et procédé pour le positionnement dans des environnements configurés
WO2008085532A3 (fr) * 2006-04-28 2008-11-06 Loctronix Corp Système et procédé pour le positionnement dans des environnements configurés
US7511662B2 (en) 2006-04-28 2009-03-31 Loctronix Corporation System and method for positioning in configured environments
CN101479622A (zh) * 2006-04-28 2009-07-08 卢克卓尼克斯有限公司 用于在配置环境中定位的系统和方法
EA013169B1 (ru) * 2006-04-28 2010-02-26 Локтроникс Корпорейшн Система и способ для определения местоположения в конфигурированных средах
US7916074B2 (en) 2006-04-28 2011-03-29 Loctronix Corporation System and method for positioning in configured environments
KR101106387B1 (ko) * 2006-04-28 2012-01-17 록트로닉스 코포레이션 설정되는 환경에서의 위치확인을 위한 시스템 및 방법
US9455762B2 (en) 2006-04-28 2016-09-27 Telecommunication Systems, Inc. System and method for positioning using hybrid spectral compression and cross correlation signal processing

Also Published As

Publication number Publication date
AU1448999A (en) 1999-03-29
WO1999013352A3 (fr) 1999-05-06

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