Reflection of radar waves by soils, crops and forest: a review of some recent Dutch work.
AbstractReviews the principles of measurement of radar reflection and some studies on three landscape types in the Netherlands. Measurements on forest (several stand types) were made from a television tower near Eindhoven in winter 1972/73 and compared with ground-survey data. Radar reflection increased gradually with increasing stem numbers/ha, being influenced largely by the canopy (owing to its high water content) and very little by tree height or stem diameter. At greater distances, the taller trees acted as a screen preventing further measurement. The technique is regarded as promising. ADDITIONAL ABSTRACT: The use of radar reflection as a classifier for agricultural purposes is discussed and demonstrated. The results of some series of measurements being performed by a Dutch working group in collaboration with the Agricultural University is mentioned, together with the problems of data handling. (Abstract retrieved from CAB Abstracts by CABI’s permission)