JPS54123997A - Remote measuring method of atmospheric components - Google Patents
Remote measuring method of atmospheric componentsInfo
- Publication number
- JPS54123997A JPS54123997A JP3131878A JP3131878A JPS54123997A JP S54123997 A JPS54123997 A JP S54123997A JP 3131878 A JP3131878 A JP 3131878A JP 3131878 A JP3131878 A JP 3131878A JP S54123997 A JPS54123997 A JP S54123997A
- Authority
- JP
- Japan
- Prior art keywords
- laser light
- concentrations
- laser
- subjected
- points
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000009826 distribution Methods 0.000 abstract 2
- 239000000443 aerosol Substances 0.000 abstract 1
- 230000003321 amplification Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
PURPOSE:To make possible measurement of distant distributions of concentrations and achieve the reduction in size of the apparatus by applying frequency modulation to the continuous oscillation laser of relatively small outputs. CONSTITUTION:The output of a CW laser oscillator 1 is subjected to photo frequency modulation 2, is radiated into the atmoshphere from a transmission telescope 4 and the laser light scattered by the aerosols existing at the points A, B, etc. are collected by a receiving telescope 6, are subjected to heterodyne detection 7 and amplification 8, thence they are supplied to a mixer 10 whereby they are mxed with the output of a local oscillator 9 which is repeatedly swept with a specified time delay with respect to the transmission laser light, then through a BPF 13, sequring detector 14, the signal corresponding to the intensity of the receiving laser light is obtainable as a function of distances. By A/D converting 15 this signal, sample holding 16 performing specified operation 17, the concentration between the points A and B is obtained. Further the distance distribution of the concentrations is obtained by sequentially deviating the timings of sample holding and is recorded 18.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3131878A JPS54123997A (en) | 1978-03-17 | 1978-03-17 | Remote measuring method of atmospheric components |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3131878A JPS54123997A (en) | 1978-03-17 | 1978-03-17 | Remote measuring method of atmospheric components |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54123997A true JPS54123997A (en) | 1979-09-26 |
Family
ID=12327920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3131878A Pending JPS54123997A (en) | 1978-03-17 | 1978-03-17 | Remote measuring method of atmospheric components |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54123997A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6298235A (en) * | 1985-10-25 | 1987-05-07 | Tokyo Gas Co Ltd | Gas distribution measurement method |
WO2010055715A1 (en) * | 2008-11-14 | 2010-05-20 | 株式会社Ihi | Apparatus for determining concentration of gaseous component |
US8395771B2 (en) | 2008-11-14 | 2013-03-12 | Ihi Corporation | Apparatus and method for determining concentration of gaseous component |
-
1978
- 1978-03-17 JP JP3131878A patent/JPS54123997A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6298235A (en) * | 1985-10-25 | 1987-05-07 | Tokyo Gas Co Ltd | Gas distribution measurement method |
WO2010055715A1 (en) * | 2008-11-14 | 2010-05-20 | 株式会社Ihi | Apparatus for determining concentration of gaseous component |
JP2010117303A (en) * | 2008-11-14 | 2010-05-27 | Ihi Corp | Apparatus for measuring concentration of gas component |
US8395771B2 (en) | 2008-11-14 | 2013-03-12 | Ihi Corporation | Apparatus and method for determining concentration of gaseous component |
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