GB1152854A - Improvements in or relating to Distance Measuring Apparatus - Google Patents

Improvements in or relating to Distance Measuring Apparatus

Info

Publication number
GB1152854A
GB1152854A GB52601/66A GB5260166A GB1152854A GB 1152854 A GB1152854 A GB 1152854A GB 52601/66 A GB52601/66 A GB 52601/66A GB 5260166 A GB5260166 A GB 5260166A GB 1152854 A GB1152854 A GB 1152854A
Authority
GB
United Kingdom
Prior art keywords
oscillator
phase
modulation
nov
photo
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
Application number
GB52601/66A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Schweiz AG
Albiswerk Zuerich AG
Original Assignee
Siemens Albis AG
Albiswerk Zuerich AG
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 Siemens Albis AG, Albiswerk Zuerich AG filed Critical Siemens Albis AG
Publication of GB1152854A publication Critical patent/GB1152854A/en
Expired legal-status Critical Current

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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1,152,854. Photo-electric distance measurement. ALBISWERK ZURICH A.G. 24 Nov., 1966 [25 Nov., 1965], No. 52601/66. Heading H4D. Relates to photo-electric distance measurement wherein the phase of the amplitude modulation of an echo from the reflector is compared with that of the modulation of the wave on transmission. According to the invention the phase difference measurement is performed at a lower, e.g. audio frequency by mixing the transmitted and echo modulation signals with an oscillator 10. A simple narrow band phase measuring device 13 may be employed if the frequency of oscillator 10 is caused to follow that (F) of modulation oscillator 3 by a known means 14. Oscillator 10 may provide two frequencies at equal frequency differences one above and one below F; by switching between those two frequencies and averaging the phase measurements receiver phase distortion is eliminated.
GB52601/66A 1965-11-25 1966-11-24 Improvements in or relating to Distance Measuring Apparatus Expired GB1152854A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1626565A CH430238A (en) 1965-11-25 1965-11-25 Electro-optical rangefinder

Publications (1)

Publication Number Publication Date
GB1152854A true GB1152854A (en) 1969-05-21

Family

ID=4415824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52601/66A Expired GB1152854A (en) 1965-11-25 1966-11-24 Improvements in or relating to Distance Measuring Apparatus

Country Status (7)

Country Link
CH (1) CH430238A (en)
DE (1) DE1548367A1 (en)
ES (1) ES333635A1 (en)
FR (1) FR1500740A (en)
GB (1) GB1152854A (en)
NL (1) NL6613985A (en)
SE (1) SE329015B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241399A (en) * 1990-02-13 1991-08-28 Optical Metrology Ltd Radar measurement apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE356821B (en) * 1970-03-02 1973-06-04 Bofors Ab

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241399A (en) * 1990-02-13 1991-08-28 Optical Metrology Ltd Radar measurement apparatus

Also Published As

Publication number Publication date
DE1548367A1 (en) 1969-07-17
FR1500740A (en) 1967-11-03
SE329015B (en) 1970-09-28
CH430238A (en) 1967-02-15
NL6613985A (en) 1967-05-26
ES333635A1 (en) 1967-10-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees