FR2370290A1 - Dispositif pour la mesure de la visibilite - Google Patents
Dispositif pour la mesure de la visibiliteInfo
- Publication number
- FR2370290A1 FR2370290A1 FR7730977A FR7730977A FR2370290A1 FR 2370290 A1 FR2370290 A1 FR 2370290A1 FR 7730977 A FR7730977 A FR 7730977A FR 7730977 A FR7730977 A FR 7730977A FR 2370290 A1 FR2370290 A1 FR 2370290A1
- Authority
- FR
- France
- Prior art keywords
- receiver
- radiation source
- measuring
- viewing range
- measuring visibility
- 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
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)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7612218A SE404848B (sv) | 1976-11-03 | 1976-11-03 | Anordning for siktmetning |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2370290A1 true FR2370290A1 (fr) | 1978-06-02 |
FR2370290B1 FR2370290B1 (US08066781-20111129-C00013.png) | 1982-09-17 |
Family
ID=20329324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7730977A Granted FR2370290A1 (fr) | 1976-11-03 | 1977-10-14 | Dispositif pour la mesure de la visibilite |
Country Status (6)
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE427501B (sv) * | 1982-03-30 | 1983-04-11 | Foerenade Fabriksverken | Sett att meta en roks ir-kamouflerande formaga |
US4614429A (en) * | 1984-05-14 | 1986-09-30 | The United States Of America As Represented By The Secretary Of The Air Force | Atmospheric contrast transmittance monitor |
US7016045B2 (en) * | 1999-03-12 | 2006-03-21 | Regents Of The University Of Minnesota | Video camera-based visibility measurement system |
US6853453B2 (en) * | 1999-03-12 | 2005-02-08 | Regents Of The University Of Minnesota | Video camera-based visibility measurement system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3572949A (en) * | 1964-10-14 | 1971-03-30 | Acec | An installation for measuring the maximum visual distance in the fog including a series of signal lights |
FR2114462A5 (US08066781-20111129-C00013.png) * | 1970-11-16 | 1972-06-30 | Asea Ab | |
FR2261542A1 (en) * | 1974-02-20 | 1975-09-12 | Aerazur Constr Aeronaut | Aircraft guidance system for landing strip - determines real visibility at all given points in predetermined spatial domain |
FR2266895A1 (US08066781-20111129-C00013.png) * | 1974-04-08 | 1975-10-31 | Asea Ab |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1241639B (de) * | 1964-07-18 | 1967-06-01 | Impulsphysik Gmbh | Verfahren und Vorrichtung zur Bestimmung der Sichtweite auf Landebahnen |
US3985452A (en) * | 1974-04-30 | 1976-10-12 | Allmanna Svenska Elektriska Aktiebolaget | Arrangement for determining visibility in the glide path of an aircraft |
-
1976
- 1976-11-03 SE SE7612218A patent/SE404848B/xx not_active IP Right Cessation
-
1977
- 1977-10-14 FR FR7730977A patent/FR2370290A1/fr active Granted
- 1977-10-19 DE DE19772746905 patent/DE2746905A1/de not_active Withdrawn
- 1977-11-01 US US05/847,442 patent/US4200398A/en not_active Expired - Lifetime
- 1977-11-01 JP JP13038777A patent/JPS5357884A/ja active Granted
- 1977-11-02 GB GB45512/77A patent/GB1587429A/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3572949A (en) * | 1964-10-14 | 1971-03-30 | Acec | An installation for measuring the maximum visual distance in the fog including a series of signal lights |
FR2114462A5 (US08066781-20111129-C00013.png) * | 1970-11-16 | 1972-06-30 | Asea Ab | |
FR2261542A1 (en) * | 1974-02-20 | 1975-09-12 | Aerazur Constr Aeronaut | Aircraft guidance system for landing strip - determines real visibility at all given points in predetermined spatial domain |
FR2266895A1 (US08066781-20111129-C00013.png) * | 1974-04-08 | 1975-10-31 | Asea Ab |
Also Published As
Publication number | Publication date |
---|---|
US4200398A (en) | 1980-04-29 |
JPS5357884A (en) | 1978-05-25 |
DE2746905A1 (de) | 1978-05-11 |
SE404848B (sv) | 1978-10-30 |
FR2370290B1 (US08066781-20111129-C00013.png) | 1982-09-17 |
JPS6159455B2 (US08066781-20111129-C00013.png) | 1986-12-16 |
GB1587429A (en) | 1981-04-01 |
SE7612218L (sv) | 1978-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |