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Assessing the ground data requirements for regional-scale remote sensing of tropical forest biophysical properties

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<mark>Journal publication date</mark>2000
<mark>Journal</mark>International Journal of Remote Sensing
Issue number13-14
Volume21
Number of pages17
Pages (from-to)2571-2587
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The use of remotely sensed data to estimate terrestrial properties usually involves the acquisition of ground data. Remotely sensed data are being applied to ever larger areas and the acquisition and use of ground data, being so expensive, requires optimization. This paper investigates a sampling strategy that has already been used to acquire ground data in support of National Oceanic and Atmospheric Administration Advanced Very High Resolution Radiometer (NOAA AVHRR) imagery of approximately 18 000 km2 of Cameroonian forest and attempts to validate both the strategy and the use of the ground data in regression modelling. Specifically, a geostatistical approach was used to quantify the variability in the scene, the precision of the ground data, the benefits of twostage sampling and the errors associated with regression modelling and prediction.

Bibliographic note

M1 - 13 & 14