CA2332578A1 - Systeme et procede de communication entre plusieurs dispositifs de teletransmission et/ou de geolocalisation de ces derniers au moyen d'un filtre adapte ne variant pas dans le temps - Google Patents

Systeme et procede de communication entre plusieurs dispositifs de teletransmission et/ou de geolocalisation de ces derniers au moyen d'un filtre adapte ne variant pas dans le temps Download PDF

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Publication number
CA2332578A1
CA2332578A1 CA002332578A CA2332578A CA2332578A1 CA 2332578 A1 CA2332578 A1 CA 2332578A1 CA 002332578 A CA002332578 A CA 002332578A CA 2332578 A CA2332578 A CA 2332578A CA 2332578 A1 CA2332578 A1 CA 2332578A1
Authority
CA
Canada
Prior art keywords
signal
signals
transmitters
chirp
plural
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002332578A
Other languages
English (en)
Inventor
James C. Otto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Harris Corp
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 Harris Corp filed Critical Harris Corp
Publication of CA2332578A1 publication Critical patent/CA2332578A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/026—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse time characteristics modulation, e.g. width, position, interval
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
    • G08G1/127—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams to a central station ; Indicators in a central station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/103—Chirp modulation
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/003—Address allocation methods and details

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un système et un procédé, selon lesquels plusieurs dispositifs de télétransmission communiquent de manière asynchrone avec une ou plusieurs stations réceptrices. Les émetteurs sont des unités relativement peu onéreuses qui font appel à des circuits de base de temps également peu onéreux pour produire un signal chirp codé par position d'impulsions et utilisé pour moduler un signal de porteuse. Après réception du signal au niveau des stations réceptrices, le signal peut être démodulé et décodé au moyen d'un signal chirp de référence qui a été localement produit de manière asynchrone par rapport à la base de temps de n'importe quel émetteur. Au moyen d'un filtre adapté ne variant pas dans le temps, la station réceptrice obtient le moment d'arrivée des différents signaux transmis et toutes données supplémentaires.
CA002332578A 1998-06-04 1998-06-04 Systeme et procede de communication entre plusieurs dispositifs de teletransmission et/ou de geolocalisation de ces derniers au moyen d'un filtre adapte ne variant pas dans le temps Abandoned CA2332578A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/011475 WO1999063501A1 (fr) 1998-06-04 1998-06-04 Systeme et procede de communication entre plusieurs dispositifs de teletransmission et/ou de geolocalisation de ces derniers au moyen d'un filtre adapte ne variant pas dans le temps

Publications (1)

Publication Number Publication Date
CA2332578A1 true CA2332578A1 (fr) 1999-12-09

Family

ID=22267231

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002332578A Abandoned CA2332578A1 (fr) 1998-06-04 1998-06-04 Systeme et procede de communication entre plusieurs dispositifs de teletransmission et/ou de geolocalisation de ces derniers au moyen d'un filtre adapte ne variant pas dans le temps

Country Status (6)

Country Link
JP (1) JP2002517844A (fr)
KR (1) KR20010106122A (fr)
CN (1) CN1295702A (fr)
AU (1) AU7814898A (fr)
CA (1) CA2332578A1 (fr)
WO (1) WO1999063501A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3687356B2 (ja) * 1998-08-05 2005-08-24 いすゞ自動車株式会社 運行管理装置
DE19961777A1 (de) * 1999-12-21 2001-07-12 Rudolf Bannasch Verfahren und Vorrichtungen zur Informationsübertragung
AU3187500A (en) * 2000-03-05 2001-09-17 Itran Communications Ltd. Spread spectrum communication system utilizing differential code shift keying
GB0130804D0 (en) * 2001-12-22 2002-02-06 Koninkl Philips Electronics Nv Method and apparatus for signal receipt and acquisition
US20060039451A1 (en) * 2004-08-23 2006-02-23 Xiangyang Zhuang Method and apparatus for fast cell search
US8179797B2 (en) * 2009-05-28 2012-05-15 Microsoft Corporation Channel discovery and disconnection in networks over white spaces and other portions of the spectrum
FR3077141B1 (fr) * 2018-01-22 2020-07-03 Kerlink Procede de geolocalisation d'un dispositif emetteur de signal
CN112255467A (zh) * 2019-07-22 2021-01-22 苏州普镭辰光光电有限公司 测量脉冲信号到达时间的装置和方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714573A (en) * 1970-05-06 1973-01-30 Hazeltine Corp Spread-spectrum position monitoring system
US3848231A (en) * 1970-12-31 1974-11-12 Baldwin Electronics Inc Alarm system utilizing pulse position modulation and dual conductor sensor
DD235149A1 (de) * 1985-03-04 1986-04-23 Mittweida Ing Hochschule Verfahren zur gleichzeitigen uebertragung digitaler signale im zweirichtungsverkehr
JPS6488273A (en) * 1987-09-30 1989-04-03 Nec Corp Communication/position-measurement system of moving body by satellites
US5095493A (en) * 1988-11-02 1992-03-10 Axonn Corporation Wireless alarm system
US5278862A (en) * 1992-04-03 1994-01-11 Intellon Corporation Timing for spread-spectrum communication across noisy media
JPH05506505A (ja) * 1990-04-06 1993-09-22 ラッセル，ヴィック 積分変調
IL103976A0 (en) * 1992-12-04 1994-05-30 Mintz Yossi Method and system for iteratively targeting participants according to their priorities

Also Published As

Publication number Publication date
WO1999063501A1 (fr) 1999-12-09
AU7814898A (en) 1999-12-20
KR20010106122A (ko) 2001-11-29
CN1295702A (zh) 2001-05-16
JP2002517844A (ja) 2002-06-18

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Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 20020604