Dynamic range and sensitivity requirements of satellite ocean color sensors: learning from the past
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490 citations
Cites background from "Dynamic range and sensitivity requi..."
...Unfortunately, both of these sensors have been plagued with issues, such as unreliable spectral and radiometric calibration [100] and their low signal-to-noise ratio (SNR), especially over bodies of water, and this often leads to poor retrievals [101,102], e....
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...The GEO-CAPE mission will provide high spectral, spatial, radiometric and temporal resolution, although as it will be positioned in a geostationary orbit, it will provide only products for the Americas, not global coverage [101,150]....
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243 citations
Cites background from "Dynamic range and sensitivity requi..."
...For example, the near infrared (NIR) channels (MODIS 748 and 869 nm) are designed to have high sensitivity (signal-to-noise ratio (SNR) N 800:1, Hu et al., 2012b) to improve atmospheric correction, yet these bands tend to saturate over highly turbid waters (suspended sediment concentration N ~35 mg…...
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241 citations
220 citations
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...They are wellcalibrated sensors with dynamic ranges and signal-to-noise characteristics necessary for observing ocean properties (Hu et al., 2012)....
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202 citations
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..., SNR(443) = 1000) for existing (Hu et al., 2012) and/or future (Del Castillo et al....
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...Therefore, the overall radiometric quality of MSI and OLI products is comparable, and both are found to offer more precise measurements than those of the heritage Landsat missions over aquatic systems (Franz et al., 2015; Gerace et al., 2013; Hu et al., 2012; Pahlevan and Schott, 2013)....
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...Note, however, that MSI and OLI SNRs are still considerably below the radiometric requirements recommended (e.g., SNR(443) = 1000) for existing (Hu et al., 2012) and/or future (Del Castillo et al., 2012) ocean color missions....
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References
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"Dynamic range and sensitivity requi..." refers background in this paper
...The disproportionally low SNRs in the SeaWiFS NIR bands have significant implications on atmospheric correction [29,30] and ocean color data products, as small noises in these bands would propagate to much higher noises in the blue–green bands through atmospheric correction, resulting in pixelization in Chl images [4]....
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684 citations