NL6904621A - - Google Patents

Info

Publication number
NL6904621A
NL6904621A NL6904621A NL6904621A NL6904621A NL 6904621 A NL6904621 A NL 6904621A NL 6904621 A NL6904621 A NL 6904621A NL 6904621 A NL6904621 A NL 6904621A NL 6904621 A NL6904621 A NL 6904621A
Authority
NL
Netherlands
Application number
NL6904621A
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 filed Critical
Priority to NL6904621A priority Critical patent/NL6904621A/xx
Priority to DE19702012946 priority patent/DE2012946C3/de
Priority to GB1348470A priority patent/GB1308957A/en
Priority to BE747836D priority patent/BE747836A/xx
Priority to CH435870A priority patent/CH520319A/de
Priority to FR7010533A priority patent/FR2035878B1/fr
Publication of NL6904621A publication Critical patent/NL6904621A/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02055—Reduction or prevention of errors; Testing; Calibration
    • G01B9/02075—Reduction or prevention of errors; Testing; Calibration of particular errors
    • G01B9/02078—Caused by ambiguity
    • G01B9/02079—Quadrature detection, i.e. detecting relatively phase-shifted signals
    • G01B9/02081—Quadrature detection, i.e. detecting relatively phase-shifted signals simultaneous quadrature detection, e.g. by spatial phase shifting
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S17/34—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/70—Using polarization in the interferometer

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
NL6904621A 1969-03-25 1969-03-25 NL6904621A (enrdf_load_stackoverflow)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL6904621A NL6904621A (enrdf_load_stackoverflow) 1969-03-25 1969-03-25
DE19702012946 DE2012946C3 (de) 1969-03-25 1970-03-18 Vorrichtung zur Bestimmung des Abstandes eines Gegenstandes in Bezug auf eine definierte Lage mit Hilfe eines Interferometers
GB1348470A GB1308957A (en) 1969-03-25 1970-03-20 Methods and apparatus for determining the distance of an object
BE747836D BE747836A (fr) 1969-03-25 1970-03-23 Dispositif permettant de determiner la distance entre un objet et un endroit determine a l'aide de rayons emis par un
CH435870A CH520319A (de) 1969-03-25 1970-03-23 Vorrichtung zur Bestimmung des Abstandes eines Gegenstandes von einem Bezugspunkt mittels einer von einem Sender ausgesandten Strahlung
FR7010533A FR2035878B1 (enrdf_load_stackoverflow) 1969-03-25 1970-03-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6904621A NL6904621A (enrdf_load_stackoverflow) 1969-03-25 1969-03-25

Publications (1)

Publication Number Publication Date
NL6904621A true NL6904621A (enrdf_load_stackoverflow) 1970-09-29

Family

ID=19806529

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6904621A NL6904621A (enrdf_load_stackoverflow) 1969-03-25 1969-03-25

Country Status (5)

Country Link
BE (1) BE747836A (enrdf_load_stackoverflow)
CH (1) CH520319A (enrdf_load_stackoverflow)
FR (1) FR2035878B1 (enrdf_load_stackoverflow)
GB (1) GB1308957A (enrdf_load_stackoverflow)
NL (1) NL6904621A (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468099A1 (fr) * 1979-10-17 1981-04-30 Anvar Procede et appareil d'interferometrie laser a deux longueurs d'ondes
DD201191B1 (de) * 1981-09-24 1987-07-15 Ilmenau Tech Hochschule Kippinvariantes interferometer mit ebenen spiegeln
GB2127960B (en) * 1982-09-29 1985-12-11 British Aerospace Ring laser gyroscope readout arrangements
GB2129124B (en) * 1982-10-16 1985-12-11 Ferranti Plc Aligning mask with body
GB2256480B (en) * 1991-06-05 1995-02-01 Marconi Gec Ltd Improvements to optical sensors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1086053A (fr) * 1953-07-02 1955-02-09 Csf Perfectionnements aux systèmes de télémétrie à modulation de fréquence
US3366954A (en) * 1966-11-04 1968-01-30 Air Force Usa Spectrographical range finder
AU409380B2 (en) * 1966-12-06 1971-01-07 Improvements in or relating to optical mixing devices

Also Published As

Publication number Publication date
GB1308957A (en) 1973-03-07
FR2035878A1 (enrdf_load_stackoverflow) 1970-12-24
CH520319A (de) 1972-03-15
FR2035878B1 (enrdf_load_stackoverflow) 1974-09-20
DE2012946B2 (de) 1975-07-24
DE2012946A1 (de) 1970-10-01
BE747836A (fr) 1970-09-23

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