FR2248520A1 - Evaluation of atmospheric dispersion measurements - to determine coefficient of extinction and visual range - Google Patents

Evaluation of atmospheric dispersion measurements - to determine coefficient of extinction and visual range

Info

Publication number
FR2248520A1
FR2248520A1 FR7433894A FR7433894A FR2248520A1 FR 2248520 A1 FR2248520 A1 FR 2248520A1 FR 7433894 A FR7433894 A FR 7433894A FR 7433894 A FR7433894 A FR 7433894A FR 2248520 A1 FR2248520 A1 FR 2248520A1
Authority
FR
France
Prior art keywords
extinction
evaluation
visual range
determine coefficient
dispersion measurements
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
FR7433894A
Other languages
French (fr)
Other versions
FR2248520B1 (en
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.)
Eltro GmbH and Co
Original Assignee
Eltro GmbH and Co
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
Priority claimed from DE19732351972 external-priority patent/DE2351972C3/en
Application filed by Eltro GmbH and Co filed Critical Eltro GmbH and Co
Publication of FR2248520A1 publication Critical patent/FR2248520A1/en
Application granted granted Critical
Publication of FR2248520B1 publication Critical patent/FR2248520B1/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
    • 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
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
    • 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
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

The signal into which the energy of the pulse is converted is transformed at the output of a LOG amplifier into digital values by means of an analogue-digital transducer. Predetermined ranges are assigned to control pulses derived from a pulse generator which is modulated by a logic circuit via a delay line in such a way that the digital values are conveyed to the analogue-digital transducer and via a store to a computer, whereupon the result is shown on a display unit. The computer corrects wrong test data and then computes the result with the corrected data.
FR7433894A 1973-10-17 1974-10-09 Evaluation of atmospheric dispersion measurements - to determine coefficient of extinction and visual range Granted FR2248520A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732351972 DE2351972C3 (en) 1973-10-17 Device for determining the extinction coefficient

Publications (2)

Publication Number Publication Date
FR2248520A1 true FR2248520A1 (en) 1975-05-16
FR2248520B1 FR2248520B1 (en) 1979-04-27

Family

ID=5895603

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7433894A Granted FR2248520A1 (en) 1973-10-17 1974-10-09 Evaluation of atmospheric dispersion measurements - to determine coefficient of extinction and visual range

Country Status (1)

Country Link
FR (1) FR2248520A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033870A2 (en) * 1980-01-26 1981-08-19 DEUTSCHE FORSCHUNGSANSTALT FÜR LUFT- UND RAUMFAHRT e.V. Method of measuring slant visibility
CN111427064A (en) * 2020-04-27 2020-07-17 安徽皖仪科技股份有限公司 Aerosol extinction coefficient inversion method based on micro-pulse laser radar

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519354A (en) * 1965-06-17 1970-07-07 Sperry Rand Corp System for measuring extinction coefficients in the atmosphere utilizing backscattered signals

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519354A (en) * 1965-06-17 1970-07-07 Sperry Rand Corp System for measuring extinction coefficients in the atmosphere utilizing backscattered signals

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LASER AND ELEKTRO OPTIK, volume 5, no. 4, août 1973, page 43 - 45, H.J. KATERLE: 'Lidar-Messungen zur Erforschung der Atmosphäre' *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0033870A2 (en) * 1980-01-26 1981-08-19 DEUTSCHE FORSCHUNGSANSTALT FÜR LUFT- UND RAUMFAHRT e.V. Method of measuring slant visibility
EP0033870A3 (en) * 1980-01-26 1982-05-26 Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V. Process and laser measuring apparatus for measuring visibility, slant visibility and cloud height
CN111427064A (en) * 2020-04-27 2020-07-17 安徽皖仪科技股份有限公司 Aerosol extinction coefficient inversion method based on micro-pulse laser radar
CN111427064B (en) * 2020-04-27 2023-08-18 安徽皖仪科技股份有限公司 Aerosol extinction coefficient inversion method based on micropulse laser radar

Also Published As

Publication number Publication date
FR2248520B1 (en) 1979-04-27
DE2351972A1 (en) 1975-04-30
DE2351972B2 (en) 1976-03-25

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Legal Events

Date Code Title Description
ST Notification of lapse