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Frequency-domain analyses of GPR waveforms : enhancing near-surface observational capabilities
| Content Provider | Semantic Scholar |
|---|---|
| Author | Serbin, Guy Or, Dani |
| Copyright Year | 2006 |
| Abstract | Greenhouse and field wheat canopy time domain (TD) ground-penetrating radar (GPR) measurements were analysed in the frequency domain (FD) using Fast Fourier Transforms (FFT). FFTs of top canopy, soil surface, and subsurface Al-foil termination reflections and entire profiles were compared with TD surface reflection magnitudes (SR) and signal propagation time (PT) estimated water contents Θ v . Direct relationships were found between TD and FD SR magnitudes and Θ v , and indirect relationships between TD SR and PT values and FD SR components. GPR profiles FFTs showed interference patterns attributed to interactions between reflecting layers within the profile. FD profile radar backscatter coefficient σ 0 values at 430 MHz (P-band) and 1.26 GHz (L-band) showed that near-surface reflective objects biased results, particularly at lower frequencies where signal penetration depths were greater. The final results show that a single monostatic horn antenna with sufficient bandwidth can determine near-truth radar backscattering parameters for air- and spaceborne platforms. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://iahs.info/uploads/dms/13440.36-274-285-S7-29-serbin.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |