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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kobayashi, Y. Pierce, L. Sarabandi, K. Dobson, M.C. |
| Copyright Year | 1998 |
| Description | Author affiliation: Radiation Lab., Michigan Univ., Ann Arbor, MI, USA (Kobayashi, Y.) |
| Abstract | The accuracy of the digital elevation model (DEM) generated by the JPL TOPSAR for extracting canopy height is evaluated. For this purpose an experiment using C-band TOPSAR at the Michigan Forest Test Site (MFTS) in Michigan's Upper peninsula was conducted. For the chosen tree stands, extensive ground data were collected. The most important and difficult-to-characterize ground truth parameter was the forest ground level data which is required for extracting the height of the scattering phase center from the interferometric SAR (INSAR) DEM. To accomplish this, differential GPS (Global Positioning System) measurements were done to accurately (/spl plusmn/5 cm) characterize the elevation in selected areas. Significant discrepancies between GPS and TOPSAR DEMs and between the two TOPSAR DEMs of the same area were observed. The discrepancies are attributed to uncompensated aircraft roll and multipath. After correcting for these as best as the authors could, an average periodic height discrepancy along the cross-track direction of about /spl plusmn/5 m remained, Recommendations are provided for the extraction of the best estimate of the scattering phase center height and a model is provided to estimate actual tree height. It is accurate to within 1 meter or 10% for the red pine test stands used. |
| Starting Page | 2439 |
| Ending Page | 2441 |
| File Size | 295483 |
| Page Count | 3 |
| File Format | |
| ISBN | 0780344030 |
| DOI | 10.1109/IGARSS.1998.702239 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1998-07-06 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Data mining Global Positioning System Testing Phase estimation Digital elevation models Scattering parameters Synthetic aperture radar interferometry Area measurement Position measurement Aircraft |
| Content Type | Text |
| Resource Type | Article |
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