RU2014152767A - The method of determining the spectral index of attenuation of directional light in seawater "in situ" - Google Patents
The method of determining the spectral index of attenuation of directional light in seawater "in situ" Download PDFInfo
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- RU2014152767A RU2014152767A RU2014152767A RU2014152767A RU2014152767A RU 2014152767 A RU2014152767 A RU 2014152767A RU 2014152767 A RU2014152767 A RU 2014152767A RU 2014152767 A RU2014152767 A RU 2014152767A RU 2014152767 A RU2014152767 A RU 2014152767A
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- optical axis
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- signals
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- light
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- 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
- G01N21/59—Transmissivity
-
- 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
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/4133—Refractometers, e.g. differential
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Способ определения спектрального показателя ослабления направленного света в морской воде «in situ», заключающийся в том, что в корпусе прибора от источника излучения посылают узконаправленный пучок света и разделяют его на два луча, первый из которых направляют по оптической оси измерительного канала, формируют из него параллельный пучок света и направляют его из корпуса прибора в морскую воду до триппель-призмы, затем - назад по той же оптической оси в корпус прибора и далее - на фотоприемник, а второй луч направляют по оптической оси опорного канала на прямоугольную призму и далее - на фотоприемник, при этом оптическая ось опорного канала находится внутри корпуса прибора и перпендикулярна оптической оси измерительного канала, регистрируют сигналы опорного и измерительного каналов, осуществляют их дифференциальное усиление, определяют вклад внешней засветки на значения полученных сигналов и осуществляют аналого-цифровое преобразование этих сигналов, отличающийся тем, что используют двухэлементный фотоприемник, на одну светочувствительную площадку которого направляют прошедший по оптической оси измерительного канала первый луч, а на другую светочувствительную площадку - прошедший по оптической оси опорного канала второй луч, используют n-канальный источник излучения и осуществляют модуляцию, обеспечивая заданные частотно-фазовые характеристики первого и второго лучей, определяют вклад внешней засветки на значения сигналов опорного и измерительного каналов путем синхронного детектирования этих сигналов на каждом из n заданных участков спектра и определяют значения спектрального показателя ослабления направленнA method for determining the spectral index of attenuation of directional light in seawater “in situ”, which consists in sending a narrow beam of light from the radiation source and dividing it into two beams, the first of which is directed along the optical axis of the measuring channel, formed from it parallel beam of light and direct it from the device body into sea water to a triple prism, then back along the same optical axis to the device body and then to the photodetector, and the second beam is sent along the optical axis of the reference of the channel to a rectangular prism and then to the photodetector, while the optical axis of the reference channel is located inside the device body and perpendicular to the optical axis of the measuring channel, the signals of the reference and measuring channels are recorded, their differential amplification is carried out, the contribution of external illumination to the values of the received signals is determined, and analog-to-digital conversion of these signals, characterized in that they use a two-element photodetector, which I direct to one photosensitive area t the first beam passed along the optical axis of the measuring channel, and the second beam passed along the optical axis of the reference channel to the other photosensitive area, use the n-channel radiation source and modulate, providing the specified frequency-phase characteristics of the first and second rays, determine the contribution of external illumination on the values of the signals of the reference and measuring channels by synchronously detecting these signals on each of n specified sections of the spectrum and determine the values of the spectral index of the donkey Lenia direction
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Application Number | Priority Date | Filing Date | Title |
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RU2014152767/28A RU2605640C2 (en) | 2014-12-24 | 2014-12-24 | METHOD OF DETERMINING SPECTRUM ATTENUATION COEFFICIENT OF COLLIMATED LIGHT IN SEA WATER "in situ" |
Applications Claiming Priority (1)
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RU2014152767/28A RU2605640C2 (en) | 2014-12-24 | 2014-12-24 | METHOD OF DETERMINING SPECTRUM ATTENUATION COEFFICIENT OF COLLIMATED LIGHT IN SEA WATER "in situ" |
Publications (2)
Publication Number | Publication Date |
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RU2014152767A true RU2014152767A (en) | 2016-07-20 |
RU2605640C2 RU2605640C2 (en) | 2016-12-27 |
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RU2014152767/28A RU2605640C2 (en) | 2014-12-24 | 2014-12-24 | METHOD OF DETERMINING SPECTRUM ATTENUATION COEFFICIENT OF COLLIMATED LIGHT IN SEA WATER "in situ" |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113405660A (en) * | 2021-06-07 | 2021-09-17 | 海南热带海洋学院 | Calibration device and calibration method for potential rail spectral radiance under underwater spectral imaging equipment |
CN113607658A (en) * | 2021-08-05 | 2021-11-05 | 大连海事大学 | Method for obtaining oil film attenuation coefficient based on oil film gray value |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU193689U1 (en) * | 2019-08-30 | 2019-11-11 | Федеральное государственное бюджетное учреждение науки Институт оптики атмосферы им. В.Е. Зуева Сибирского отделения Российской академии наук (ИОА СО РАН) | Laser device for measuring the attenuation coefficient of the aquatic environment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4416542A (en) * | 1981-06-15 | 1983-11-22 | The United States Of America As Represented By The Secretary Of The Navy | Nighttime/daytime diffuse attenuation coefficient device for seawater |
RU2341786C2 (en) * | 2006-12-21 | 2008-12-20 | Владимир Александрович Артемьев | Sea water transparency meter |
FR2911684B1 (en) * | 2007-01-24 | 2009-04-03 | Get Enst Bretagne Groupe Des E | OPTICAL SENSOR FOR MEASURING SALINITY AND VISIBILITY IN SEA WATER. |
CN101839854B (en) * | 2010-05-31 | 2012-05-23 | 中国科学院南海海洋研究所 | Long optical path sea water absorption coefficient measuring device and working method thereof |
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2014
- 2014-12-24 RU RU2014152767/28A patent/RU2605640C2/en active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113405660A (en) * | 2021-06-07 | 2021-09-17 | 海南热带海洋学院 | Calibration device and calibration method for potential rail spectral radiance under underwater spectral imaging equipment |
CN113405660B (en) * | 2021-06-07 | 2022-10-11 | 海南热带海洋学院 | Potential rail spectral radiance calibration device and method under underwater spectral imaging equipment |
CN113607658A (en) * | 2021-08-05 | 2021-11-05 | 大连海事大学 | Method for obtaining oil film attenuation coefficient based on oil film gray value |
CN113607658B (en) * | 2021-08-05 | 2023-12-12 | 大连海事大学 | Method for acquiring oil film attenuation coefficient based on oil film gray value |
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RU2605640C2 (en) | 2016-12-27 |
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