Gary Smith Jonforsen

Showing 35 publications

2009

Model-based compensation of topography effects for improved stem volume retrieval from CARABAS-II VHF-band SAR images

Klas Folkesson, Gary Smith Jonforsen, Lars Ulander
IEEE Transactions on Geoscience and Remote Sensing. Vol. 47 (4), p. 1045-1055
Journal article
2008

A physical-optics model for double-bounce scattering from tree stems standing on an undulating ground surface

Björn Hallberg, Gary Smith Jonforsen, Lars Ulander et al
IEEE Transactions on Geoscience and Remote Sensing. Vol. 46 (9), p. 2607-2621
Journal article
2008

Validating backscatter models for CARABAS SAR images of coniferous forests

Klas Folkesson, Gary Smith Jonforsen, Lars Ulander
Canadian J. of Remote Sensing. Vol. 34 (5), p. 480-495
Journal article
2007

Effects of Forest Biomass and Stand Consolidation on P-Band Backscatter

Gary Smith Jonforsen, Klas Folkesson, Björn Hallberg et al
IEEE Geoscience and Remote Sensing Letters. Vol. 4 (4), p. 669-673
Magazine article
2007

Topographic and Number Density Effects in Forest Observations with P-band SAR

Lars Ulander, Gustaf Sandberg, Klas Folkesson et al
5th International Symposium on Retrieval of Bio- and Geophysical Parameters from SAR Data, Bari, Italy, September 25-28, 2007, ESA, Istituto di Studi sui Sistemi Intelligenti per l´Automazione
Conference contribution
2007

Estimation of forest stem volume using ALOS PALSAR satellite images

M. Magnusson, J.E.S. Fransson, Leif Eriksson et al
IEEE Geoscience and Remote Sensing Symposium (IGARSS 2007), Barcelona, Spain, July 23-27, 2007. Vol. DOI: 10.1109/IGARSS.2007.4423813, p. 4343-4346
Conference contribution
2007

A Physical-optics Model for Predicting VHF/UHF-band HH-pol Backscatter from Coniferous Forests in Undulating Terrain

Gustaf Sandberg, Björn Hallberg, Gary Smith Jonforsen et al
5th International Symposium on Retrieval of Bio- and Geophysical Parameters from SAR Data, Bari, Italy, September 25-28, 2007, ESA, Istituto di Studi sui Sistemi Intelligenti per l`Automazione
Conference contribution
2007

Detection of forest changes using ALOS PALSAR satellite images

J.E.S. Fransson, M. Magnusson, H. Olsson et al
IEEE Geoscience and Remote Sensing Symposium (IGARSS 2007), Barcelona, Spain, July 23-27, 2007. Vol. DOI: 10.1109/IGARSS.2007.4423308, p. 2330-2333
Conference contribution
2007

ALOS PALSAR Calibration and Validation Results from Sweden

Leif Eriksson, Gustaf Sandberg, Lars Ulander et al
IEEE Geoscience and Remote Sensing Symposium (IGARSS 2007), Barcelona, Spain, July 23-27, 2007. Vol. DOI: 10.1109/IGARSS.2007.4423115, p. 1589-1592
Conference contribution
2007

Mapping of Wind-Thrown Forests Using VHF/UHF SAR Images

J.E.S. Fransson, M. Magnusson, Klas Folkesson et al
IEEE 2007 International Geoscience and Remote Sensing Symposium (IGARSS 2007), Barcelona, Spain, July 23-27 2007. Vol. DOI: 10.1109/IGARSS.2007.4423313, p. 2350-2353
Conference contribution
2006

Automatic Detection of Wind-Thrown Forest in VHF SAR Images

Klas Folkesson, Björn Hallberg, Gary Smith Jonforsen et al
IEEE Geoscience and Remote Sensing Symposium (IGARSS), held in Denver, Colorado, July 2006., p. 3599-
Conference contribution
2006

ALOS Calibration and Validation Activities in Sweden

Lars Ulander, Leif Eriksson, Gary Smith Jonforsen et al
IEEE Geoscience and Remote Sensing Symposium (IGARSS), held in Denver, Colorado, July 2006., p. 336-
Conference contribution
2006

Algorithms for automatic detection of wind thrown trees in CARABAS SAR images

Gary Smith Jonforsen, Björn Hallberg, Klas Folkesson
Report
2006

VHF/UHF Ultra-Wideband SAR Measurements of Forests

Gary Smith Jonforsen, Björn Hallberg, Klas Folkesson et al
EUSAR 2006, held in Dresden, Germany, May 2006.
Conference contribution
2006

Mapping of wind-thrown forests using the VHF-band CARABAS-II SAR

Lars Ulander, A. Gustavsson, Gary Smith Jonforsen et al
IEEE Geoscience and Remote Sensing Symposium (IGARSS), held in Denver, Colorado, July 2006., p. 3684-
Conference contribution
2006

LORAM - A SAR/GMTI Data Collection Campaign

A. Gustavsson, Lars Ulander, P-O. Frölind et al
EUSAR 2006, held in Dresden, Germany, May 2006.
Conference contribution
2005

Remote Sensing at the Department of Radio and Space Science, Chalmers University of Technology

Jan Askne, Gunnar Elgered, Bo Galle et al
IEEE Geoscience and Remote Sensing Newsletter (136), p. 11-18
Magazine article
2005

Evaluation of using space- and airborne radar for mapping wind-thrown forests after the January 2005 hurricane in southern Sweden

Lars Ulander, Gary Smith Jonforsen, Leif Eriksson et al
Forestsat 2005 / Olsson, H.. Vol. A, p. 99-104
Conference contribution
2005

Mapping and monitoring forest stem volume using CARABAS

Klas Folkesson, J.E.S. Franssson, A. Gustavsson et al
Forestsat 2005 / Olsson, H.. Vol. B, p. 97-101
Conference contribution
2005

Measurements at tree level using CARABAS-II

Björn Hallberg, Gary Smith Jonforsen, Lars Ulander
Forestsat 2005 / Olsson, H.. Vol. A, p. 54-58
Conference contribution
2005

Measurements on individual trees using multiple VHF SAR images

Björn Hallberg, Gary Smith Jonforsen, Lars Ulander
IEEE Trans. Geosci. Rem. Sens.. Vol. 43 (10), p. 2261-2269
Journal article
2005

Low VHF-band backscatter from coniferous forests on sloping terrain

Gary Smith Jonforsen, Lars Ulander, X. Luo
IEEE Trans. Geosci. Rem. Sens.. Vol. 43 (10), p. 2246-2260
Journal article
2005

Mapping of Wind-thrown Forests in Southern Sweden Using Space- and Airborne SAR

Lars Ulander, Gary Smith Jonforsen, Leif Eriksson et al
IEEE "Geoscience and Remote Sensing Symposium (IGARSS), Seoul, Korea, 25-29 July. Vol. 5, p. 3619-3622
Conference contribution
2004

L-Band Observations of Boreal Forest Stem Volume

Jan Askne, M. Santoro, Gary Smith Jonforsen
Proceedings of the 23rd EARSeL Symposium on Remote Sensing in Transition, Millpress, 'Rotterdam, ed. R. Goassens, p. 159-
Paper in proceedings
2004

Applications of Low-Frequency SAR: Final Project Report, ESA Contract No. 16115/02/NL/MM

Gary Smith Jonforsen, Anders Carlström, Klas Folkesson et al
Report
2004

Automatic Segmentation of Multiple VHF-Band SAR Images to Improve Stem Volume Retrieval

Klas Folkesson, Gary Smith Jonforsen, Lars Ulander
IEEE Geoscience and Remote Sensing Symposium (IGARSS), Anchorage, Alaska, Sept. 2004, p. 519-522
Paper in proceedings
2004

Simulation of a Spaceborne Low-Frequency SAR for Global Biomass Assessment

Björn Hallberg, Gary Smith Jonforsen, Annelie Olofsson et al
“Radar 2004”, Toulouse, France, 18-22 October, 2004.
Conference contribution
2004

Performance Simulation of Spaceborne P-Band SAR for Global Biomass Retrieval

Björn Hallberg, Gary Smith Jonforsen, Annelie Olofsson et al
IEEE "Geoscience and Remote Sensing Symposium (IGARSS), Anchorage, Alaska, Sept 2004, p. 503-506
Paper in proceedings
2004

Estimation of Forest Stem Volume in Sloping Terrain Using CARABAS-II VHF SAR Data

J.E.S. Fransson, Gary Smith Jonforsen, F. Walter et al
Can. J. Rem. Sens.. Vol. 30, p. 651-660
Journal article
2003

Stem volume retrieval at stand level using multiple low-frequency SAR images

Klas Folkesson, Gary Smith Jonforsen, Lars Ulander
IEEE Geoscience and Remote Sensing Symposium (IGARSS), Toulouse, France, 21-25 July. Vol. IV, p. 2556-8
Conference contribution
2003

A production line for forest stem volume measurements from VHF SAR data

F. Walter, J.E.S. Fransson, A. Gustavsson et al
IEEE "Geoscience and Remote Sensing Symposium (IGARSS), Toulouse, France, 21-25 July. Vol. IV, p. 2544-6
Conference contribution
2003

Multitemporal repeat-pass SAR interferometry of boreal forests

Jan Askne, M Santoro, Gary Smith Jonforsen et al
IEEE Transactions on Geoscience and Remote Sensing. Vol. 41 (7), p. 1540-1550
Journal article
2002

Forest stem volume estimation using high-resolution lidar and SAR data

Gary Smith Jonforsen, Å. Persson, J. Holmgren et al
IEEE Geoscience and Remote Sensing Symposium (IGARSS), Toronto, Canada, 24-28 June. Vol. IV, p. 2084-6
Conference contribution
2000

Radar Remote Sensing of Forests Using CARABAS and ERS

Gary Smith Jonforsen
Doctoral thesis
1998

ERS InSAR coherence for remote sensing of boreal forests

Gary Smith Jonforsen
Licentiate thesis

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