FR2264279A2 - Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor - Google Patents

Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor

Info

Publication number
FR2264279A2
FR2264279A2 FR7408381A FR7408381A FR2264279A2 FR 2264279 A2 FR2264279 A2 FR 2264279A2 FR 7408381 A FR7408381 A FR 7408381A FR 7408381 A FR7408381 A FR 7408381A FR 2264279 A2 FR2264279 A2 FR 2264279A2
Authority
FR
France
Prior art keywords
visibility
transmission factor
measurer
ambient light
determining
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.)
Granted
Application number
FR7408381A
Other languages
English (en)
French (fr)
Other versions
FR2264279B2 (online.php
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.)
Safran Aerosystems SAS
Original Assignee
Aerazur Constructions Aeronautiques SA
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 Aerazur Constructions Aeronautiques SA filed Critical Aerazur Constructions Aeronautiques SA
Priority to FR7408381A priority Critical patent/FR2264279A2/fr
Priority to CA196,274A priority patent/CA1000964A/en
Priority to US05/459,435 priority patent/US3931526A/en
Priority to BR2915/74A priority patent/BR7402915D0/pt
Publication of FR2264279A2 publication Critical patent/FR2264279A2/fr
Application granted granted Critical
Publication of FR2264279B2 publication Critical patent/FR2264279B2/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/538—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke for determining atmospheric attenuation and visibility
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Optical Communication System (AREA)
FR7408381A 1973-04-13 1974-03-12 Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor Granted FR2264279A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7408381A FR2264279A2 (en) 1974-03-12 1974-03-12 Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor
CA196,274A CA1000964A (en) 1973-04-13 1974-03-28 Measurement of atmospheric transmission factors and intensity of ambient light
US05/459,435 US3931526A (en) 1973-04-13 1974-04-09 Process and a device for measuring transmission factors
BR2915/74A BR7402915D0 (pt) 1973-04-13 1974-04-10 Processo para medida de fatores de transmissao e transmissiometro

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7408381A FR2264279A2 (en) 1974-03-12 1974-03-12 Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor

Publications (2)

Publication Number Publication Date
FR2264279A2 true FR2264279A2 (en) 1975-10-10
FR2264279B2 FR2264279B2 (online.php) 1977-09-23

Family

ID=9136195

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7408381A Granted FR2264279A2 (en) 1973-04-13 1974-03-12 Visibility measurer with ambient light corrections - has numerical calculators determining visibility from transmission factor

Country Status (1)

Country Link
FR (1) FR2264279A2 (online.php)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419333A (en) * 1965-09-01 1968-12-31 Ind Res Associates Inc Runway visual range computer system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419333A (en) * 1965-09-01 1968-12-31 Ind Res Associates Inc Runway visual range computer system

Also Published As

Publication number Publication date
FR2264279B2 (online.php) 1977-09-23

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Legal Events

Date Code Title Description
DJ Final judicial decision determining the rights related to a patent