NL295277A - - Google Patents

Info

Publication number
NL295277A
NL295277A NL295277DA NL295277A NL 295277 A NL295277 A NL 295277A NL 295277D A NL295277D A NL 295277DA NL 295277 A NL295277 A NL 295277A
Authority
NL
Netherlands
Prior art keywords
frequency
signal
station
output
oscillator
Prior art date
Application number
Other languages
English (en)
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.)
Publication of NL295277A publication Critical patent/NL295277A/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
    • 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
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/84—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted for distance determination by phase measurement
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/46—Indirect determination of position data
    • G01S2013/466—Indirect determination of position data by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined
NL295277D 1962-08-15 NL295277A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH977062A CH397259A (de) 1962-08-15 1962-08-15 Verfahren zur Distanzmessung

Publications (1)

Publication Number Publication Date
NL295277A true NL295277A (fr)

Family

ID=4355491

Family Applications (1)

Application Number Title Priority Date Filing Date
NL295277D NL295277A (fr) 1962-08-15

Country Status (6)

Country Link
US (1) US3200399A (fr)
CH (1) CH397259A (fr)
DE (1) DE1264796B (fr)
ES (1) ES287045A1 (fr)
GB (1) GB1023843A (fr)
NL (1) NL295277A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH515488A (de) * 1969-08-11 1971-11-15 Aga Ab Entfernungsmesseinrichtung
CH511442A (de) * 1970-07-10 1971-08-15 Siemens Ag Albis Schaltungsanordnung in einem elektrischen Distanzmessgerät zum Ziehen der Frequenz des Messoszillators auf eine um einen bestimmten vorgegebenen Betrag höhere bzw. tiefere Frequenz
US4577150A (en) * 1982-06-09 1986-03-18 Plessey South Africa Limited Phase measuring method and apparatus
EP1555505A1 (fr) * 2004-01-16 2005-07-20 Nomics, société anonyme Dispositif de mesure de distance
CN102751980A (zh) * 2012-07-14 2012-10-24 中科芯集成电路股份有限公司 利用电容延时特性实现有源rc滤波器的自动频率校准电路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL76023C (fr) * 1938-09-30
US2697826A (en) * 1946-05-08 1954-12-21 Robert H Dicke Moving target indicating system
US2528119A (en) * 1947-04-25 1950-10-31 Rca Corp Frequency modulation range finder
CH271980A (de) * 1947-12-04 1950-11-30 Osten Bergstrand Erik Verfahren zur Entfernungsmessung und Vorrichtung zur Ausübung des Verfahrens.
FR1030119A (fr) * 1950-12-26 1953-06-10 Csf Radar à modulation combinée d'amplitude et de fréquence éliminant les échos fixes
FR1210627A (fr) * 1955-11-15 1960-03-09 South African Council Scientif Procédé et appareillage pour déterminer des positions relatives par le temps de transmission d'ondes
CH353540A (de) * 1956-05-12 1961-04-15 Askania Werke Ag Einrichtung zur Entfernungsmessung mittels modulierter elektromagnetischer Strahlung
FR1248549A (fr) * 1959-11-06 1960-12-16 Csf Perfectionnements aux radio-altimètres de haute altitude

Also Published As

Publication number Publication date
ES287045A1 (es) 1963-10-16
US3200399A (en) 1965-08-10
DE1264796B (de) 1968-03-28
GB1023843A (en) 1966-03-30
CH397259A (de) 1965-08-15

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