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WO2003036934A2 - Localisation de position au moyen de signaux de television analogiques d'emission - Google Patents

Localisation de position au moyen de signaux de television analogiques d'emission Download PDF

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Publication number
WO2003036934A2
WO2003036934A2 PCT/US2002/033656 US0233656W WO03036934A2 WO 2003036934 A2 WO2003036934 A2 WO 2003036934A2 US 0233656 W US0233656 W US 0233656W WO 03036934 A2 WO03036934 A2 WO 03036934A2
Authority
WO
WIPO (PCT)
Prior art keywords
pseudorange
user terminal
analog television
producing
predetermined reference
Prior art date
Application number
PCT/US2002/033656
Other languages
English (en)
Other versions
WO2003036934A3 (fr
Inventor
Matthew Rabinowitz
James J. Spilker, Jr.
Original Assignee
The Rosum Corporation
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 The Rosum Corporation filed Critical The Rosum Corporation
Priority to AU2002347988A priority Critical patent/AU2002347988A1/en
Priority to KR10-2004-7005421A priority patent/KR20040089073A/ko
Priority to JP2003539296A priority patent/JP2005507084A/ja
Priority to EP02784198A priority patent/EP1446940A2/fr
Publication of WO2003036934A2 publication Critical patent/WO2003036934A2/fr
Publication of WO2003036934A3 publication Critical patent/WO2003036934A3/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
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • G01S5/145—Using a supplementary range measurement, e.g. based on pseudo-range 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
    • G01S5/0205—Details
    • G01S5/021—Calibration, monitoring or correction
    • 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
    • G01S19/45—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
    • G01S19/46—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being of a radio-wave signal type
    • 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
    • G01S5/0205—Details
    • G01S5/0218—Multipath in signal reception
    • 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

Definitions

  • Serial No. 60/265,675 "System and Method for Navigation and/or Data Communication Using Satellite and/or Terrestrial Infrastructure," by Matthew Rabinowitz and James J. Spilker, filed February 2, 2001
  • Serial No. 60/281,270 "Use of the ETSI DVB Terrestrial Digital TV Broadcast Signals For High Accuracy Position Location in Mobile Radio Links," by James J. Spilker, filed April 3, 2001
  • Serial No. 60/281 ,269 "An ATSC Standard DTV Channel For Low Data Rate Broadcast to Mobile Receivers” by James J. Spilker and Matthew Rabinowitz, filed April 3, 2001
  • Serial No. 60/293,812 "DTV Monitor System Unit (MSU)," by James J.
  • Implementations of the present invention describe signal processing techniques for position location using analog broadcast television (TV) Signals. These techniques can track signals which are below the noise floor, and for which a conventional television signal receiver would be unable to acquire timing information. These techniques extract timing information in a manner far more precise than a typical television receiver. These techniques also accommodate all the variable characteristics of the analog TV signal, such that these variations do not affect the precision of position location.
  • TV broadcast television
  • FIG. 9 shows the signals generated by taking a linear sum of even horizontal segments of the baseband signal, and a linear sum of odd horizontal segments of the baseband signal, plotted on top of one another.
  • FIG. 16 shows an approximation to the derivative of the sum signal on the same axes as a normalized replica of the sum signal.
  • FIG. 17 shows the correlation result for the sum signal and the approximation of the derivative of the sum signal.
  • FIG. 18 shows a process performed by a user terminal according to one implementation.
  • FIG. 22 shows the result of the correlation between the chrominance burst and its correlation reference signal at a user terminal.
  • the leading digit(s) of each reference numeral used in this specification indicates the number of the drawing in which the reference numeral first appears.
  • FIG. 2 illustrates an operation of implementation 100.
  • User terminal 102 receives TV signals from a plurality of TV transmitters 106A and 106B through 106N (step 202). Various methods can be used to select which TV channels to use in position location.
  • a TV location server 110 tells user terminal 102 of the best TV channels to range from.
  • user terminal 102 exchanges messages with TV location server 110 by way of base station 104.
  • user terminal 102 selects TV channels to monitor based on the identity of base station 104 and a stored table correlating base stations and TV channels.
  • Each monitor unit 108 measures the TV signals it receives, and generates a set of parameters that characterize those signals.
  • the monitor stations transmit these parameters to the user terminals 102, which use the parameters to generate reference signals.
  • the user terminals correlate the TV signals they receive with the reference signals to obtain a pseudorange to each TV transmitter.
  • the pseudoranges are used, either by user terminal 102 or by a TV location server 110, to determine the location of the user terminal 102.
  • Each monitor unit 108 measures, for each of the TV transmitters 106 from which it receives TV signals, a time offset between the local clock of that TV transmitter and a reference clock.
  • the reference clock is derived from GPS signals.
  • each measured time offset is transmitted periodically to the TV location server using the Internet, a secured modem connection or the like.
  • the location of each monitor unit 108 is determined using GPS receivers.
  • T represents a timing offset multiplied by the speed of light.
  • the three ranges can be expressed as
  • XI represents the two-dimensional vector position (xl, yl) of DTV transmitter 106A
  • X2 represents the two-dimensional vector position (x2, y2) of DTV transmitter 106B
  • XN represents the two-dimensional vector position (xN,yN) of DTV transmitter 106N.
  • T(t+ A) T(t)+— ⁇ dt
  • the user terminal 102 commences with an additional set of pseudorange measurements at some time ⁇ after the initial set of measurements. These measurements may be described:
  • user terminal 102 obtains a pseudorange by correlating received TV signals with a reference signal based on the chrominance burst.
  • Processor 520 generates parameters that user terminal 102 uses to resolve the cycle ambiguity in the chrominance burst.
  • processor 520 replicates this theoretically optimal approach by characterizing the derivative of sum signal s sum (t) . That derivative is referred to herein as s sum dem (t) .
  • FIG. 16 shows the resulting approximation 1602 to s sum dem (t) on the same axes as a normalized replica 1604 of s sum (t) .
  • each pulse of waveform s mm dmv (t) is implemented with 3 points. If the pulse widths are known a priori, the entire waveform sum _ denv (t) can be characterized by 4 integers that specify the mid-point of each pulse.
  • these parameters are sent to user terminal 102.
  • user terminal 102 constructs a reference signal based on the parameters, and correlates the reference signal with a received TV signal to generate one or more pseudoranges.
  • Processor 520 correlates the derivative approximation s sum dem (t) with the sum signal s sum (t) to produce a correlation result r ⁇ f ( ⁇ ) .
  • the correlation result is shown in FIG. 17.
  • Processor 520 performs the correlation only over a limited subsection of s sum (t) based on the coarse timing information extracted previously.
  • the user and reference pseudoranges are then processed to determine a position for the user terminal, as described above. This includes resolving the phase ambiguity introduced by the horizontal synchronization pulse period H. [0212]
  • the color encoding scheme for PAL is similar to that of NTSC. However, one notable difference is that the carrier frequency is related to the horizontal synchronization frequency, ⁇ H , and vertical synchronization frequency, ⁇ v , by the formula
  • Storage devices suitable for tangibly embodying computer program instructions and data include all forms of non-volatile memory, including by way of example semiconductor memory devices, such as EPROM, EEPROM, and flash memory devices; magnetic disks such as internal hard disks and removable disks; magneto-optical disks; and CD-ROM disks. Any of the foregoing can be supplemented by, or inco ⁇ orated in, ASICs (application-specific integrated circuits). [0227] A number of implementations of the invention have been described.

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)
  • Synchronizing For Television (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

L'invention concerne un produit de programme informatique, un appareil, et un procédé destinés à déterminer la position d'un terminal utilisateur. Cette invention permet de recevoir, au niveau du terminal utilisateur, un signal de télévision analogique d'émission à composante périodique; et à corréler ce signal avec un signal de référence prédéterminé basé sur cette composante périodique, produisant ainsi une pseudo-distance. L'emplacement du terminal utilisateur est déterminé sur la base de cette pseudo-distance et d'un emplacement de l'émetteur du signal de télévision analogique d'émission.
PCT/US2002/033656 2001-10-23 2002-10-15 Localisation de position au moyen de signaux de television analogiques d'emission WO2003036934A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2002347988A AU2002347988A1 (en) 2001-10-23 2002-10-15 Position location using broadcast analog television signals
KR10-2004-7005421A KR20040089073A (ko) 2001-10-23 2002-10-15 방송 아날로그 텔레비전 신호들을 이용한 위치 선정
JP2003539296A JP2005507084A (ja) 2001-10-23 2002-10-15 アナログ放送テレビ信号を利用した位置標定
EP02784198A EP1446940A2 (fr) 2001-10-23 2002-10-15 Localisation de position au moyen de signaux de television analogiques d'emission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34381901P 2001-10-23 2001-10-23
US60/343,819 2001-10-23

Publications (2)

Publication Number Publication Date
WO2003036934A2 true WO2003036934A2 (fr) 2003-05-01
WO2003036934A3 WO2003036934A3 (fr) 2003-10-30

Family

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Family Applications (1)

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PCT/US2002/033656 WO2003036934A2 (fr) 2001-10-23 2002-10-15 Localisation de position au moyen de signaux de television analogiques d'emission

Country Status (6)

Country Link
EP (1) EP1446940A2 (fr)
JP (1) JP2005507084A (fr)
KR (1) KR20040089073A (fr)
CN (1) CN1568434A (fr)
AU (1) AU2002347988A1 (fr)
WO (1) WO2003036934A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007044352A1 (fr) 2005-10-05 2007-04-19 Honeywell International Inc. Système d’identification de localisation pour dipositif sans fil
CN101806907A (zh) * 2010-03-12 2010-08-18 清华大学 多站多平台体系下基于相干与非相干混合的飞行器定位法
US9857452B2 (en) 2014-10-16 2018-01-02 Henry H. Liao Method for locating and positioning using broadcast FM signals and phase difference computation technique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7990314B2 (en) * 2008-06-30 2011-08-02 Liao Henry H Method and system for locating a geographical position using broadcast frequency modulation signals
KR101593548B1 (ko) 2014-05-23 2016-02-15 주식회사 미디어포유 전신주 위치 정보 제공 시스템 및 방법
CN111190344B (zh) * 2018-11-15 2022-01-11 北京自动化控制设备研究所 一种卫星导航军码授时设备的设计方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5510801A (en) * 1994-03-01 1996-04-23 Stanford Telecommunications, Inc. Location determination system and method using television broadcast signals

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007044352A1 (fr) 2005-10-05 2007-04-19 Honeywell International Inc. Système d’identification de localisation pour dipositif sans fil
US7603129B2 (en) 2005-10-05 2009-10-13 Honeywell International Inc. Localization identification system for wireless devices
CN101806907A (zh) * 2010-03-12 2010-08-18 清华大学 多站多平台体系下基于相干与非相干混合的飞行器定位法
US9857452B2 (en) 2014-10-16 2018-01-02 Henry H. Liao Method for locating and positioning using broadcast FM signals and phase difference computation technique

Also Published As

Publication number Publication date
WO2003036934A3 (fr) 2003-10-30
EP1446940A2 (fr) 2004-08-18
CN1568434A (zh) 2005-01-19
KR20040089073A (ko) 2004-10-20
AU2002347988A1 (en) 2003-05-06
JP2005507084A (ja) 2005-03-10

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