IT1025983B - Ricevitore per navigazione con selezionamento a filtri tipo doppler - Google Patents

Ricevitore per navigazione con selezionamento a filtri tipo doppler

Info

Publication number
IT1025983B
IT1025983B IT29800/74A IT2980074A IT1025983B IT 1025983 B IT1025983 B IT 1025983B IT 29800/74 A IT29800/74 A IT 29800/74A IT 2980074 A IT2980074 A IT 2980074A IT 1025983 B IT1025983 B IT 1025983B
Authority
IT
Italy
Prior art keywords
type filter
navigation receiver
filter selection
doppler type
doppler
Prior art date
Application number
IT29800/74A
Other languages
English (en)
Original Assignee
Int Standard Electric 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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Application granted granted Critical
Publication of IT1025983B publication Critical patent/IT1025983B/it

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
    • G01S1/38—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna
    • G01S1/40—Systems for determining direction or position line using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna the apparent movement of the antenna being produced by cyclic sequential energisation of fixed antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
IT29800/74A 1973-11-27 1974-11-26 Ricevitore per navigazione con selezionamento a filtri tipo doppler IT1025983B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5497073A GB1436786A (en) 1973-11-27 1973-11-27 Radio navigatin receiver

Publications (1)

Publication Number Publication Date
IT1025983B true IT1025983B (it) 1978-08-30

Family

ID=10472597

Family Applications (1)

Application Number Title Priority Date Filing Date
IT29800/74A IT1025983B (it) 1973-11-27 1974-11-26 Ricevitore per navigazione con selezionamento a filtri tipo doppler

Country Status (6)

Country Link
US (1) US3946386A (it)
JP (1) JPS5327149B2 (it)
CH (1) CH579781A5 (it)
FR (1) FR2252577A1 (it)
GB (1) GB1436786A (it)
IT (1) IT1025983B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3032277A (en) * 1976-11-10 1979-05-10 Int Standard Electric Corp Radio navigation receivers
US5334984A (en) * 1989-06-02 1994-08-02 Tokyo Keiki Co., Ltd. Method and system for locating direction of transmission source based on wave therefrom
NL1024532C2 (nl) * 2003-10-14 2005-04-15 Thales Nederland Bv RF multipath vermindering voor geleide projectielen.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1234541A (it) * 1969-02-05 1971-06-03
BE759259A (fr) * 1969-11-24 1971-05-24 Int Standard Electric Corp Procede de mesure de frequence

Also Published As

Publication number Publication date
AU7572274A (en) 1976-05-27
GB1436786A (en) 1976-05-26
JPS5327149B2 (it) 1978-08-07
FR2252577A1 (it) 1975-06-20
US3946386A (en) 1976-03-23
JPS50114989A (it) 1975-09-09
CH579781A5 (it) 1976-09-15

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