ES444443A1 - Metodo para localizar un ciclo predeterminado en una envol- vente de impulsos de radiofrecuencia. - Google Patents
Metodo para localizar un ciclo predeterminado en una envol- vente de impulsos de radiofrecuencia.Info
- Publication number
- ES444443A1 ES444443A1 ES76444443A ES444443A ES444443A1 ES 444443 A1 ES444443 A1 ES 444443A1 ES 76444443 A ES76444443 A ES 76444443A ES 444443 A ES444443 A ES 444443A ES 444443 A1 ES444443 A1 ES 444443A1
- Authority
- ES
- Spain
- Prior art keywords
- loran
- radio
- leading edge
- pulses
- particularly adapted
- 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.)
- Expired
Links
- 238000005070 sampling Methods 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 1
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
- G01S1/245—Details of receivers cooperating therewith, e.g. determining positive zero crossing of third cycle in LORAN-C
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)
- Radar Systems Or Details Thereof (AREA)
- Networks Using Active Elements (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US339182A US3921076A (en) | 1973-03-08 | 1973-03-08 | 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 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES444443A1 true ES444443A1 (es) | 1977-05-16 |
Family
ID=23327862
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES420800A Expired ES420800A1 (es) | 1973-03-08 | 1973-11-23 | Aparato de seguimiento de envolvente de impulsos de radio- frecuencia. |
ES76444443A Expired ES444443A1 (es) | 1973-03-08 | 1976-01-19 | Metodo para localizar un ciclo predeterminado en una envol- vente de impulsos de radiofrecuencia. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES420800A Expired ES420800A1 (es) | 1973-03-08 | 1973-11-23 | Aparato de seguimiento de envolvente de impulsos de radio- frecuencia. |
Country Status (8)
Country | Link |
---|---|
US (1) | US3921076A (es) |
JP (1) | JPS5318395B2 (es) |
CA (1) | CA1002636A (es) |
DE (1) | DE2405653C3 (es) |
ES (2) | ES420800A1 (es) |
GB (1) | GB1407320A (es) |
IT (1) | IT1008069B (es) |
NO (1) | NO136729C (es) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3995272A (en) * | 1975-03-10 | 1976-11-30 | The Singer Company | Signal conditioning circuit |
DE2527857A1 (de) * | 1975-06-23 | 1977-01-13 | Blaupunkt Werke Gmbh | Decoder fuer frequenzmodulierte steuersignale |
US4110557A (en) * | 1976-12-27 | 1978-08-29 | Sperry Rand Corporation | Phase lock oscillator for use in data processing system |
JPS53123696A (en) * | 1977-04-04 | 1978-10-28 | Koden Electronics Co Ltd | Loral receiver cycle selector |
JPS53135593A (en) * | 1977-04-30 | 1978-11-27 | Koden Electronics Co Ltd | Loral receiver cycle selector |
USRE31962E (en) * | 1977-10-17 | 1985-07-30 | Sanders Associates, Inc. | LORAN-C navigation apparatus |
CA1124820A (en) * | 1977-10-17 | 1982-06-01 | Lester R. Brodeur | Loran-c navigation apparatus |
US4134117A (en) * | 1977-10-19 | 1979-01-09 | Texas Instruments Incorporated | Loran C receiver |
US4215239A (en) * | 1977-12-05 | 1980-07-29 | E-Systems, Inc. | Apparatus for the acquisition of a carrier frequency and symbol timing lock |
US4300139A (en) * | 1978-08-28 | 1981-11-10 | Sanders Associates, Inc. | Loran-C navigation apparatus |
US4328587A (en) * | 1979-02-19 | 1982-05-04 | Kokusai Denshin Denwa Kabushiki Kaisha | Phase slip detector and systems employing the detector |
US4423419A (en) * | 1980-10-20 | 1983-12-27 | Megapulse Incorporated | Pulsed, pseudo random position fixing radio navigation method and system and the like |
JPS5813046A (ja) * | 1981-07-17 | 1983-01-25 | Victor Co Of Japan Ltd | デ−タ読み取り回路 |
JPS631256Y2 (es) * | 1982-02-25 | 1988-01-13 | ||
JPS6339657Y2 (es) * | 1982-02-25 | 1988-10-18 | ||
JPS60237380A (ja) * | 1984-05-11 | 1985-11-26 | Nissan Motor Co Ltd | ロランc信号の位相追尾装置 |
US4595927A (en) * | 1984-07-05 | 1986-06-17 | Motorola, Inc. | Loran C cycle slip reduction technique |
US4743912A (en) * | 1985-06-24 | 1988-05-10 | Megapulse Inc. | Method of and apparatus for reducing cycle slippage errors in Loran-C and similar radio-frequency signal reception, particularly in vehicles undergoing acceleration |
US4791422A (en) * | 1986-07-14 | 1988-12-13 | Megapulse Incorporated | Methods of and apparatus for measuring time of arrival of remote Loran-C and related signals and effective time of transmission of local signals at transmitter sites |
US4812852A (en) * | 1987-02-20 | 1989-03-14 | Scientific Development Corporation | Locating system and method |
US4789864A (en) * | 1987-04-22 | 1988-12-06 | Eaton Corporation | Low elevation guidance system |
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 |
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 |
US5121413A (en) * | 1990-03-05 | 1992-06-09 | Motorola, Inc. | Digital pulse processor for determining leading and trailing time-of-arrival |
US5303262A (en) * | 1992-02-21 | 1994-04-12 | Hewlett-Packard Company | Method and apparatus for triggering measurements from a TDMA signal |
US6646604B2 (en) | 1999-01-08 | 2003-11-11 | Trueposition, Inc. | Automatic synchronous tuning of narrowband receivers of a wireless location system for voice/traffic channel tracking |
US7783299B2 (en) | 1999-01-08 | 2010-08-24 | Trueposition, Inc. | Advanced triggers for location-based service applications in a wireless location system |
WO2000041402A2 (en) | 1999-01-08 | 2000-07-13 | Trueposition, Inc. | A signal collection system |
US6873290B2 (en) * | 1999-01-08 | 2005-03-29 | Trueposition, Inc. | Multiple pass location processor |
US6765531B2 (en) | 1999-01-08 | 2004-07-20 | Trueposition, Inc. | System and method for interference cancellation in a location calculation, for use in a wireless location system |
WO2000040992A1 (en) * | 1999-01-08 | 2000-07-13 | Trueposition, Inc. | Location method for a wireless location system |
US6463290B1 (en) | 1999-01-08 | 2002-10-08 | Trueposition, Inc. | Mobile-assisted network based techniques for improving accuracy of wireless location system |
US6782264B2 (en) * | 1999-01-08 | 2004-08-24 | Trueposition, Inc. | Monitoring of call information in a wireless location system |
US6334059B1 (en) | 1999-01-08 | 2001-12-25 | Trueposition, Inc. | Modified transmission method for improving accuracy for e-911 calls |
US6184829B1 (en) * | 1999-01-08 | 2001-02-06 | Trueposition, Inc. | Calibration for wireless location system |
US8213957B2 (en) | 2009-04-22 | 2012-07-03 | Trueposition, Inc. | Network autonomous wireless location system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3337723A (en) * | 1963-08-29 | 1967-08-22 | Lee M Etnyre | Integrating data converter to provide continuous representation of aircraft position |
US3597539A (en) * | 1968-12-04 | 1971-08-03 | Itt | Frame synchronization system |
US3594502A (en) * | 1968-12-04 | 1971-07-20 | Itt | A rapid frame synchronization system |
US3812430A (en) * | 1971-08-11 | 1974-05-21 | Communications Satellite Corp | Tdma satellite communications system with improved acquisition |
US3798378A (en) * | 1972-11-07 | 1974-03-19 | Itt | Frame synchronization system |
-
1973
- 1973-03-08 US US339182A patent/US3921076A/en not_active Expired - Lifetime
- 1973-10-31 CA CA184,683A patent/CA1002636A/en not_active Expired
- 1973-11-05 GB GB5123673A patent/GB1407320A/en not_active Expired
- 1973-11-07 NO NO4292/73A patent/NO136729C/no unknown
- 1973-11-21 IT IT53797/73A patent/IT1008069B/it active
- 1973-11-23 ES ES420800A patent/ES420800A1/es not_active Expired
- 1973-11-26 JP JP13253273A patent/JPS5318395B2/ja not_active Expired
-
1974
- 1974-02-04 DE DE2405653A patent/DE2405653C3/de not_active Expired
-
1976
- 1976-01-19 ES ES76444443A patent/ES444443A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NO136729C (no) | 1977-10-26 |
DE2405653B2 (de) | 1978-03-09 |
NO136729B (es) | 1977-07-18 |
DE2405653C3 (de) | 1978-11-02 |
US3921076A (en) | 1975-11-18 |
CA1002636A (en) | 1976-12-28 |
ES420800A1 (es) | 1976-09-01 |
GB1407320A (en) | 1975-09-24 |
IT1008069B (it) | 1976-11-10 |
DE2405653A1 (de) | 1974-09-19 |
JPS5318395B2 (es) | 1978-06-14 |
JPS49122688A (es) | 1974-11-22 |
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