ZA817175B - Pulsed,pseudo-random position fixing radio navigation method and systems and the like - Google Patents

Pulsed,pseudo-random position fixing radio navigation method and systems and the like

Info

Publication number
ZA817175B
ZA817175B ZA817175A ZA817175A ZA817175B ZA 817175 B ZA817175 B ZA 817175B ZA 817175 A ZA817175 A ZA 817175A ZA 817175 A ZA817175 A ZA 817175A ZA 817175 B ZA817175 B ZA 817175B
Authority
ZA
South Africa
Prior art keywords
pulsed
pseudo
systems
position fixing
navigation method
Prior art date
Application number
ZA817175A
Other languages
English (en)
Inventor
Paul R Johannessen
Original Assignee
Megapulse 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 Megapulse Inc filed Critical Megapulse Inc
Publication of ZA817175B publication Critical patent/ZA817175B/xx

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
    • 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
    • G01S1/08—Systems for determining direction or position line
    • G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
    • G01S1/24—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being pulses or equivalent modulations on carrier waves and the transit times being compared by measuring the difference in arrival time of a significant part of the modulations, e.g. LORAN systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
ZA817175A 1980-10-20 1981-10-16 Pulsed,pseudo-random position fixing radio navigation method and systems and the like ZA817175B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/198,547 US4423419A (en) 1980-10-20 1980-10-20 Pulsed, pseudo random position fixing radio navigation method and system and the like

Publications (1)

Publication Number Publication Date
ZA817175B true ZA817175B (en) 1982-10-27

Family

ID=22733841

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA817175A ZA817175B (en) 1980-10-20 1981-10-16 Pulsed,pseudo-random position fixing radio navigation method and systems and the like

Country Status (8)

Country Link
US (1) US4423419A (xx)
EP (1) EP0050493B1 (xx)
JP (1) JPS57122370A (xx)
AU (1) AU549824B2 (xx)
CA (1) CA1183590A (xx)
DE (1) DE3176129D1 (xx)
IL (1) IL64127A (xx)
ZA (1) ZA817175B (xx)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5619212A (en) * 1982-03-01 1997-04-08 Western Atlas International, Inc. System for determining position from suppressed carrier radio waves
US4870422A (en) * 1982-03-01 1989-09-26 Western Atlas International, Inc. Method and system for determining position from signals from satellites
US4665404A (en) * 1983-10-24 1987-05-12 Offshore Navigation, Inc. High frequency spread spectrum positioning system and method therefor
US4916455A (en) * 1987-02-20 1990-04-10 Scientific Development Inc. Locating system and method
US4821038A (en) * 1987-11-03 1989-04-11 Megapulse Incorporated Method of and apparatus for Loran-C message communication with reduced skywave navigation location errors and the like
CA1320255C (en) * 1987-11-03 1993-07-13 Megapulse Incorporated Method of and apparatus for message communication on loran-c navigational signal broadcasts and the like with reduced navigation errors and with reduced skywave navigation location errors
US4800391A (en) * 1987-11-03 1989-01-24 Megapulse, Inc. Method of and apparatus for message communication on Loran-C navigational signal broadcasts and the like with reduced navigation errors
US5185762A (en) * 1991-05-15 1993-02-09 Scs Mobilecom, Inc. Spread spectrum microwave overlay with notch filter
US6407989B2 (en) * 1994-01-21 2002-06-18 Interdigital Technology Corporation Spread spectrum microwave overlay with notch filter
US5210770A (en) * 1991-09-27 1993-05-11 Lockheed Missiles & Space Company, Inc. Multiple-signal spread-spectrum transceiver
US5420883A (en) * 1993-05-17 1995-05-30 Hughes Aircraft Company Train location and control using spread spectrum radio communications
US5739969A (en) * 1994-07-26 1998-04-14 Inwave Technologies, Inc. Digital data storage using predetermined increments of time wherein each increment represents a plurality of bits of information
US5594453A (en) * 1994-11-01 1997-01-14 Trimble Navigation, Ltd GPS receiver having a rapid acquisition of GPS satellite signals
US5691723A (en) * 1995-09-11 1997-11-25 E-Systems, Inc. Apparatus and method for encoding and decoding data on tactical air navigation and distance measuring equipment signals
US5854605A (en) * 1996-07-05 1998-12-29 Trimble Navigation Limited GPS receiver using data bit timing to achieve a fast time to first fix
US20040057734A1 (en) * 2002-09-25 2004-03-25 Lucent Technologies, Inc. Method and system for reducing transmission penalties associated with ghost pulses
JP4197307B2 (ja) * 2004-03-30 2008-12-17 インターナショナル・ビジネス・マシーンズ・コーポレーション 電子透かし検出装置、その検出方法及びプログラム
US8462026B2 (en) * 2009-11-13 2013-06-11 Ati Technologies Ulc Pulse code modulation conversion circuit and method
NZ749916A (en) * 2016-06-14 2020-07-31 Rodney Herring Software-defined radio earth atmosphere imager

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB935694A (en) * 1959-12-18 1963-09-04 Standard Telephones Cables Ltd Radar system
US3327219A (en) * 1963-08-26 1967-06-20 Collins Radio Co Detector circuits for directly strobing radio frequency signals
US3378847A (en) * 1966-06-13 1968-04-16 Lear Siegler Inc Combination sky wave and direct wave communications
US3480956A (en) * 1968-03-29 1969-11-25 Us Army Cross-correlation radar
US3786334A (en) * 1971-08-12 1974-01-15 Megapulse Inc Magnetic pulse compression radio-frequency generator apparatus
US3711725A (en) * 1971-08-23 1973-01-16 Megapulse Inc Apparatus and method for radio-frequency pulse generation in tuned radio-frequency loads
US3921076A (en) * 1973-03-08 1975-11-18 Int Navigation Corp Method of and apparatus for locating predetermined portions of a radio-frequency pulse, particularly adapted for leading edge location of loran and similar navigational pulses
US3868691A (en) * 1973-04-13 1975-02-25 Epsco Inc Loran receiver automated master search
US3882504A (en) * 1973-11-02 1975-05-06 Int Navigation Corp Process of and apparatus for providing filter discrimination between received direct impulses and delayed pulses as in pulse navigation and related applications
US3889263A (en) * 1973-11-15 1975-06-10 Megapulse Inc Radio-frequency pulse generation system and method
US3947849A (en) * 1974-06-20 1976-03-30 The Johns Hopkins University Loran receiver-navigator
US4161696A (en) * 1975-11-21 1979-07-17 International Telephone And Telegraph Corporation Pulse transmitter reference networks supplying ECD capability
US4104635A (en) * 1976-11-12 1978-08-01 Sanders Associates, Inc. LORAN-C navigation apparatus
US4151528A (en) * 1977-04-07 1979-04-24 Megapulse, Incorporated Method of and apparatus for unambiguous radio navigation
US4166275A (en) * 1977-08-18 1979-08-28 Digital Marine Electronics Corporation Loran receiver system
CA1124820A (en) * 1977-10-17 1982-06-01 Lester R. Brodeur Loran-c navigation apparatus
FR2425776A1 (fr) * 1978-05-09 1979-12-07 Sercel Rech Const Elect Transmission radio-electrique d'un repere temporel, notamment pour mesures de distances transhorizon
US4291410A (en) * 1979-10-24 1981-09-22 Rockwell International Corporation Multipath diversity spread spectrum receiver

Also Published As

Publication number Publication date
IL64127A (en) 1984-09-30
JPH0129270B2 (xx) 1989-06-08
CA1183590A (en) 1985-03-05
AU549824B2 (en) 1986-02-13
JPS57122370A (en) 1982-07-30
US4423419A (en) 1983-12-27
EP0050493B1 (en) 1987-04-22
AU7652981A (en) 1982-04-29
EP0050493A1 (en) 1982-04-28
DE3176129D1 (en) 1987-05-27

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