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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004
Both theoretical study and experimental analysis indicated that
the ANN technology was feasible to water color remote sensing
research, and the model had strong ability to simulate
complicated inversing relation of second type water body.
On the basis of satellite synchronous monitoring experiment, a
BP neural network model was constructed, by which
concentrations of SS, CODMn, DO, T-N, T-P and chl-a were
inversed from Landsat TM data and the accuracy was
acceptable, the relative error could be controlled below 25%.
And reasons of simulating error, ways of improving model and
applications of the model were analyzed in details. The result of
this research showed that based on a small-scale of satellite
synchronous experiment, the model could be applied
successfully in investigation, analysis and estimation of lake
water quality.
REFERENCES:
Bricaud, A., and Morel, A., 1986. Light attenuation and
scattering by phytoplankton cells: a theoretical modeling. Appl.
Opt., 25, pp. 571-580.
Campbell, J. W., O'Reilly, J. E., 1988. Role of satellites in
estimating primary productivity on the northwest Atlantic
continental shelf. Cont. Shelf Res., 8, pp. 179-204.
Claudia, G., Monica, P., 2001. Detecting chlorophyll, Secchi
disk depth and surface temperature in a sub-alpine lake using
Landsat imagery. The Science of the Total Environment, 268,
pp. 19-29.
Chen, C. Q., Shi, P., Mao, Q. W., 1996. Study on modeling
chlorophyll concentration of surface coastal water using TM
data. Environmental Science and Technology, 11(3), pp. 168-
176(in Chinese).
Cheng, S. T., Kuang, C., Wang, J. P, 2002. Probe into the
Water Color Remote Sensing Theoretical Model. Journal of
Tsinghua University, 42(8), pp. 1027-1031 (in Chinese).
Cong, S., 1998. Neural network theory and application on
MATLAB toolbox. The university of science and technology of
china press, Anhui, 11, pp. 45-60(in Chinese).
Ekstrand, S., 1992. Landsat TM based quantification of
chlorophyll-a algae bloom in coastal waters. /nt. J. Remote
Sens., 10, pp. 1913-1926.
Kuang, C., Wang, J. P., Cheng, S. T., etc., 2002. The Inversing
Study of Water Color Remote Sensing in Sea Area of Macau.
In: The fourth symposium on environmental and city
development. Beijing, China, pp. 81-86 (in Chinese).
Morel, A., Prieur, L., 1977. Analysis of variations in ocean
color. Limnol. Oceanogr., 22, pp. 709-722.
Richter, R. A., 1990. Fast atmospheric correction algorithm
applied to Landsat TM Images. Int. J. Remote Sens., 11, pp.
159-166.
Richter, R. A., 1996. Spatially adaptive fast atmospheric
correction algorithm. Int. J. Remote Sens., 17, pp. 1201-1214.
681
Shuleikin, V. V., 1933. Data on the optics of a strongly
scattering medium, applied to sea water, fog and cloud.
Geofizika, 3, pp. 3-5.
Zhao, B. Y., He, B., Zhu, Y. Y., etc., 2000. Remote sensing
water quality model of suspended sediments in the dianchi lake
water bodies. Environmental Science and Technology, 3(94),
pp. 16-18(in Chinese).
Zhan, H. G., Shi, P., Chen, C. Q., 2000. Inversing chlorophyll
concentration of sea water using artificial neural network.
Chinese science bulletin, 45(17), pp. 1779-1884(in Chinese).