Characteristics of rough surface parameters estimated from measured surface profile of finite length

Estimation of roughness parameters of soil surface is one of the important problems in the field of radar remote sensing. In order to estimate these parameters from measured surface height-profile, data samples with sufficiently long record length are required for accurate estimation. In an actual measurement situation, however, it is difficult to get the surface height-profile in pure form because a bias and inclination of the data are unknown. In this study, we present a method for estimation of the bias and inclination from measured surface height-profile and reveal the effect of the accuracy on the parameter estimates.