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The Water Insight SPectrometer with 3 radiometers (WISP-3) is a hand-held radiometer which automatically operates measurements with 3 radiometers simultaneously (''Lsky, Lu, Ed'') for water quality monitoring. It derives the colour of the water, for water quality monitoring. WISP-3 directly derives values of water quality parameters (Chl, SPM, phycocyanin and Transparency) by the use of standard algorithms:〔Hommersom, A; Kratzer, S; Laanen, M; Ansko, I; Ligi, M; Bresciani, M; Giardino, C; Beltrán-Abaunza, J.M; Moore, G; Wernand, M; Peters, S. (2012) , “Intercomparison in the field between the new WISP-3 and other radiometers (TriOS Ramses, ASD FieldSpec, and TACCS”, Journal of Applied Remote Sensing, 6:1-21. Doi: 10.1117/1.JRS.6.063615.〕〔Chawira, M.(2012)."Monitoring blue-green Algae in the IJsselmeer using Remote Sensing and in-situ measurements" Thesis submitted to the Faculty of Geo-Information science and Earth Observation of the University of Twente in partial fullfilment of the requirements for the Degree of Master of Science in Geo-information science and Earth Observation〕 * Chl-a: Chlorophyll-a (0-120 µg l−1). * SPM: Suspended Particulate Matter (0–100 mg l−1). * Phycocyanin concentration (0–1200 mg m−3). * Transparency (kd m−1). The Absorption by Colored Dissolved Organic Matter (aCDOM) water quality parameter is also indirectly derived by WISP-3. In this case, more advanced algorithms are used which need the use of computers. == Technical description == The WISP-3 device is composed by three Ocean Optics, Inc. JAZ radiometers, a portable computer and a battery. One of the radiometers is connected through optical fibers to a cosine corrector to measure the downwelling irradiance ((λ)'' ). The other two radiometers are connected to two Gershun tubes in order to measure the downwelling radiance from the sky (''Lsky (λ, θ)'' ) in which θ=42 deg from the zenith and the total upwelling radiance ((λ,θ)'' ) at 42 deg from the nadir (θ=138 deg). The three radiometers and the mentioned angles are chosen conforming to Mobley's guidance.〔〔Mobley, C.D.(1999), "Estimation of the remote-sensing reflectance from above-surface measurements," Appl. Opt. 38(36), 7442-7455, http://dx.doi.org/10.1364/AO.38.007442.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Water Insight SPectrometer with 3 radiometers」の詳細全文を読む スポンサード リンク
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