Curran, P. and Williamson, H.D., 1985. The accuracy of ground data used in remote-sensing investigations. International Journal of Remote Sensing, 6 (10), pp. 1637-1651.
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A popular application of remotely sensed data is the estimation of an environmental variable at a point, with its extrapolation over a large area. For such work reliable ground data are required. This paper is divided into two parts; the first part is a review which looks at the considerations that are necessary for the collection of such ground data and finds that the spatial variability of the terrain has a profound effect on sample design. The second part illustrates these considerations by means of a case study in which airborne remotely sensed data are used to map the green-leaf-area index of grassland. It is concluded that even when large sample sizes were employed the error in ground data was greater than the error in remotely sensed data.
|Subjects:||Geography and Environmental Studies|
|Group:||University Executive Team|
|Deposited By:||Ms MJ Bowden|
|Deposited On:||14 Dec 2007|
|Last Modified:||07 Mar 2013 14:45|
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