Details

Autor(en) / Beteiligte

• Smith, G.
• Ulander, L.M.H.
• Xianyun Luo
• Martin, T.

Titel

VHF SAR models and measurements of targets under coniferous forest canopies

Ist Teil von

• IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120), 2000, Vol.3, p.990-992 vol.3

Ort / Verlag

IEEE

Erscheinungsjahr

2000

Quelle

IEEE Xplore Digital Library

Beschreibungen/Notizen

• Measurements of attenuation in the VHF-band through coniferous forests in southwest Sweden are presented, indicating that the forest canopy causes a loss of about 1.5 dB, irrespective of stem volume (from 270 to 460 m/sup 3//ha). The variation of attenuation with frequency and polarisation has also been investigated, and found to be in line with predictions using Foldy's approximation for the mean field, i.e. the attenuation due to scattering loss from trunks is higher for vertical than horizontal polarisation, and increases with frequency.