An Empirical Model of Volume Scattering From Dry Sand-Covered Surfaces at Millimeter-Wave Frequencies

作者：Nashashibi Adib Y^*; Sarabandi Kamal; Al Zaid Fahad A; Alhumaidi Sami

来源：IEEE Transactions on Geoscience and Remote Sensing, 2013, 51(6): 3673-3682.

DOI：10.1109/TGRS.2012.2225630

• Millimeter-wave (MMW) measurements
• radar
• volume scattering

This paper examines recently acquired polarimetric data of dry sand with a smooth air/sand interface at millimeter-wave (MMW) frequencies. The data characterize volume scattering from different types of sand as a function of the radar incidence angle, frequency, polarization, and particle size. The data show substantial volumetric response from dry sand at MMW frequencies with significant depolarization (between -12 and -7 dB). An empirical model is proposed and adapted for both smooth and 1-D periodic dry sand surfaces. Comparison between the expected volume scattering response of a dry sand medium with the surface scattering response of dry sand surfaces with rough interfaces shows that volume scattering is, in general, dominant, particularly at 95 GHz.

• 出版日期2013-6