FI77341C - Foerfarande vid oeverfoering av signaler genom anvaendning av smalbandskanal. - Google Patents

Foerfarande vid oeverfoering av signaler genom anvaendning av smalbandskanal. Download PDF

Info

Publication number
FI77341C
FI77341C FI872201A FI872201A FI77341C FI 77341 C FI77341 C FI 77341C FI 872201 A FI872201 A FI 872201A FI 872201 A FI872201 A FI 872201A FI 77341 C FI77341 C FI 77341C
Authority
FI
Finland
Prior art keywords
signal
frequency
information
unit
khz
Prior art date
Application number
FI872201A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI77341B (fi
FI872201A0 (fi
Inventor
Kari Kallio-Koennoe
Original Assignee
Vaisala Oy
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 Vaisala Oy filed Critical Vaisala Oy
Priority to FI872201A priority Critical patent/FI77341C/fi
Publication of FI872201A0 publication Critical patent/FI872201A0/fi
Priority to DE19883816462 priority patent/DE3816462C2/de
Application granted granted Critical
Publication of FI77341B publication Critical patent/FI77341B/fi
Publication of FI77341C publication Critical patent/FI77341C/fi

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
    • G01S1/30—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 continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference
    • G01S1/308—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 continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference particularly adapted to Omega systems
    • 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
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/767—Responders; Transponders
    • 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
    • G01S5/0009—Transmission of position information to remote stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
FI872201A 1987-05-19 1987-05-19 Foerfarande vid oeverfoering av signaler genom anvaendning av smalbandskanal. FI77341C (fi)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI872201A FI77341C (fi) 1987-05-19 1987-05-19 Foerfarande vid oeverfoering av signaler genom anvaendning av smalbandskanal.
DE19883816462 DE3816462C2 (de) 1987-05-19 1988-05-13 Vorrichtung zum Aufbereiten von über einen Schmalbandsignal zu übertragenen Signalen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI872201 1987-05-19
FI872201A FI77341C (fi) 1987-05-19 1987-05-19 Foerfarande vid oeverfoering av signaler genom anvaendning av smalbandskanal.

Publications (3)

Publication Number Publication Date
FI872201A0 FI872201A0 (fi) 1987-05-19
FI77341B FI77341B (fi) 1988-10-31
FI77341C true FI77341C (fi) 1989-02-10

Family

ID=8524508

Family Applications (1)

Application Number Title Priority Date Filing Date
FI872201A FI77341C (fi) 1987-05-19 1987-05-19 Foerfarande vid oeverfoering av signaler genom anvaendning av smalbandskanal.

Country Status (2)

Country Link
DE (1) DE3816462C2 (de)
FI (1) FI77341C (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909758A1 (de) * 1989-03-23 1990-10-04 Fraunhofer Ges Forschung Verfahren zur eigenortung bewegter objekte aufgrund von langwelligen, gegenseitigen phasenstarren signalen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052216B (en) * 1979-06-08 1983-09-21 Plessey Co Ltd Duplex transceivers
GB2063020B (en) * 1979-06-29 1983-08-10 Plessey Co Ltd Transceivers
GB2064271B (en) * 1979-07-06 1983-09-28 Plessey Co Ltd Transceivers

Also Published As

Publication number Publication date
FI77341B (fi) 1988-10-31
FI872201A0 (fi) 1987-05-19
DE3816462A1 (de) 1988-12-01
DE3816462C2 (de) 1995-11-23

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Legal Events

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MM Patent lapsed

Owner name: VAISALA OY