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- Title
Comparison of Different Dielectric Models to Estimate Penetration Depth of L- and S-Band SAR Signals into the Ground Surface.
- Authors
Singh, Abhilash; Niranjannaik, M.; Kumar, Shashi; Gaurav, Kumar
- Abstract
We evaluate the penetration depth of synthetic aperture radar (SAR) signals into the ground surface at different frequencies. We applied dielectric models (Dobson empirical, Hallikainen, and Dobson semi-empirical) on the ground surface composed of different soil types (sandy, loamy, and clayey). These models result in different penetration depths for the same set of sensors and soil properties. The Dobson semi-empirical model is more sensitive to the soil properties, followed by the Hallikainen and Dobson empirical models. We used the Dobson semi-empirical model to study the penetration depth of the upcoming NASA-ISRO synthetic aperture radar (NISAR) mission operated at the L-band (1.25 GHz) and the S-band (3.22 GHz) into the ground. We observed that depending upon the soil types, the penetration depth of the SAR signals ranges between 0 to 10 cm for the S-band and 0 to 25 cm for the L-band.
- Subjects
PENETRATION depth (Superconductors); SYNTHETIC aperture radar; DIELECTRIC properties; SOIL classification; SOIL moisture
- Publication
Geographies, 2022, Vol 2, Issue 4, p734
- ISSN
2673-7086
- Publication type
Article
- DOI
10.3390/geographies2040045