Askne, Jan

Jan Askne

jan dot askne at chalmers dot se
+46 31 772 18 43

Jan I.H. Askne retired as professor on July 1, 2001, and had then been with Chalmers University of Technology, Göteborg, Sweden, since 1961. He has been working with wave interaction models and observations of the ionosphere and cosmic radiation sources before starting up microwave remote sensing activities in the 70's. He was appointed professor at the Department of Radio and Space Science in 1984 and head of the Radar Remote Sensing Group. Jan Askne is active as emeritus with projects related to forestry using SAR and InSAR.

He has written papers on wave propagation (in the ionosphere and magnetosphere, waveguides with anisotropic dielectric media, plasmas and quantum media) in radio astronomy (radiation from molecules in cosmic clouds), passive remote sensing (oil spill, meteorological parameters in the troposphere, ozone in the stratosphere), and active remote sensing (sea ice and forestry). Since 2004, he is IEEE Fellow for contributions to microwave remote sensing applications and education. In 2004, he obtained the Thulin Medal in silver for his important contributions as scientist and educator within Swedish and international remote sensing. (The Thulin Medal is awarded in gold, silver or bronze by the Swedish Society of Aeronautics and Astronautics as a sign of distinction and an acknowledgement of achievements within the field of aeronautics.)

Below you will find a list of publications involving Jan Askne. A more recent contribution, giving a review and extension of work associated with C-band InSAR observations of boreal forest stem volume is found in: Jan Askne and Maurizio Santoro (2012). Experiences in Boreal Forest Stem Volume Estimation from Multitemporal C-Band InSAR, Recent Interferometry Applications in Topography and Astronomy, Ivan Padron (Ed.), ISBN: 978-953-51-0404-9, InTech, Available from: http://www.intechopen.com/books/recent-interferometry-applications-in-topography-and-astronomy/experience-of-boreal-forest-stem-volume-estimation-from-multitemporal-c-band-insar

Publications 2010

Santoro, M.; Wegmüller, U.; Strozzi, Tazio; Askne, Jan; Fransson, J.E.S.: Examples of thematic mapping with ERS-Envisat tandem cross-interferometry. Proceedings of Fringe 2009 Workshop, ESA-ESRIN, Frascati, Italy, 30 November - 4 December, 2009,

Santoro, M.; Wegmuller, U.; Askne, Jan: Signatures of ERS-Envisat Interferometric SAR Coherence and Phase of Short Vegetation: An Analysis in the Case of Maize Fields. IEEE Transactions on Geoscience and Remote Sensing, 48 (4) pp. 1702-1713.

2009

Askne, Jan; Santoro, M.: Automatic model-based estimation of boreal forest stem volume from repeat pass C-band InSAR coherence. IEEE Trans. Geosci. Remote Sens, 47 (2) pp. 513-516.

2008

Askne, Jan; Dierking, W.: Sea Ice Monitoring in the Arctic and Baltic Sea Using SAR. Remote Sensing of the European Seas, authors, V. Barale, M. Gade, Springer, pp. 383-398.

Santoro, M; Askne, Jan; Beer, Christian; Cartus, Oliver; Schmullius, Christiane; Wegmüller, U.; Wiesmann, A.: Automatic model inversion of multi-temporal C-band coherence and backscatter measurements for forest stem volume retrieval. Proceedings of IGARSS 2008, July 6-11, 2008, Boston, Massachusetts, USA, V pp. 124-127. ISBN/ISSN: 978-1-4244-2808-3

2007

Askne, Jan; Santoro, M: Boreal forest stem volume estimation from multitemporal C-band InSAR observations. Proc. ESA Envisat Symposium, 23-27 April 2007, Montreux, Switzerland, eds. H. Lacoste and L. Ouwehand, European Space Agency, ESA-SP-636, ISBN/ISSN: 92-9291-200-1

Askne, Jan; Santoro, M: Selection of forest stands for stem volume retrieval from stable ERS tandem InSAR observations. IEEE Geoscience and Remote Sensing Letters, 4 (1) pp. 46-50.

Santoro, M; Askne, Jan; Wegmüller, U.; Werner, C.: Observations, modelling and applications of ERS-ENVISAT coherence over land surfaces. Transactions on Geoscience and Remote Sensing, 45 (8) pp. 2600-2611.

Santoro, M; Shvidenko, A.; McCallum, I.; Askne, Jan; Schmullius, C.: Properties of ERS-1/2 coherence in the Siberian boreal forest and implications for stem volume retrieval. Remote Sensing of Environment, 106 (2) pp. 154-172.

2006

Eriksson, L.E.B.; Askne, Jan; Santoro, M.; Wiesmann, A.: Forest parameter estimation using JERS-1 repeat-pass interferometry: Stem volume retrieval in Siberia and Sweden. IEEE Geoscience and Remote Sensing Symposium (IGARSS), held in Denver, Colorado, July 2006., pp. 2212.

Santoro, M.; Askne, Jan: Accuracy assessment of stem volume retrieval from ERS-1/2 multitemporal coherence in Eurasian boreal forests. IEEE Geoscience and Remote Sensing Symposium (IGARSS), held in Denver, Colorado, July 2006., pp. 2208.

Santoro, M.; Eriksson, L.E.B.; Askne, Jan; Schmullius, C.: Assessment of standwise stem volume retrieval in boreal forest from JERS-1 L-band SAR backscatter. International Journal of Remote Sensing, 27 (16) pp. 3425-3453.

Santoro, M.; Askne, Jan; Weismann, A.; Schmullius, C.: ERS and ENVISAT SAR coherence properties of boreal forests. EARSel 2006, held in Warsaw,

Santoro, M.; Wegmüller, U.; Werner, C.; Askne, Jan: ERS-ENVISAT coherence properties of land cover. IEEE Geoscience and Remote Sensing Symposium (IGARSS), held in Denver, Colorado, July 2006., pp. 2561.

2005

Askne, Jan; Santoro, M.: Multitemporal Repeat Pass SAR Interferometry of Boreal Forests. IEEE Trans. Geosci. Rem. Sens., 43 (6) pp. 1219-1228.

Askne, Jan; Elgered, Gunnar; Galle, Bo; Murtagh, Donal P.; Smith-Jonforsen, G.; Ulander, Lars M. H.: Remote Sensing at the Department of Radio and Space Science, Chalmers University of Technology. IEEE Geoscience and Remote Sensing Newsletter, (136) pp. 11-18.

Eriksson, L.E.B.; Askne, Jan; Santoro, M.; Schmullius, C.; Wiesmann, A.: Stem Volume Retrieval with Spaceborne L-band Repeat-Pass Coherence. IEEE Geoscience and Remote Sensing Symposium (IGARSS), Seoul, Korea, 25-29 July, 5 pp. 3591-3594.

Santoro, M.; Askne, Jan; Dammert, P.B.G.: Tree height influence on ERS interferometric phase in boreal forest. IEEE Trans. Geosci. Rem. Sens., 43 (2) pp. 207-217.

2004

Askne, Jan; Santoro, M.: Interferometric InSAR Observations of Boreal Forest Stands. 4th International Symposium on Retrieval of Bio- and Geophysical Parameters from SAR Data for Land Applications, Innsbruck, Austria, 16-19 November, 2004,

Askne, Jan; Santoro, M.; Smith-Jonforsen, G.: L-Band Observations of Boreal Forest Stem Volume. Proceedings of the 23rd EARSeL Symposium on Remote Sensing in Transition, Millpress, 'Rotterdam, ed. R. Goassens, pp. 159.

Askne, Jan: Remote Sensing Using Microwaves - does a Web-based Collaborative Course Serve a Purpose?. Proceedings of the 23rd EARSeL, Symposium on Remote Sensing in Transition, Millpress, Rotterdam, ed. R. Goassens, pp. p. 527.

Eriksson, L.E.B.; Santoro, M.; Askne, Jan; Weissman, A.; Schmullius, C.: Stem Volume Retrieval with Spaceborne L-band Repeat-pass Coherence: Possibilities and Limitations for Boreal Forest. 4th International Symposium on Retrieval of Bio- and Geophysical Parameters from SAR Data for Land Applications, Innsbruck, Austria, 16-19 November, 2004,

Santoro, M.; Askne, Jan; Eriksson, L.E.B.; Schmullius, C.: Comparison of stem volume retrieval accuracy in boreal forest using multi-temporal ERS coherence images. ERS/Envisat Symposium, Salzburg, 6-10 September 2004, ESA, SP-572

Santoro, M.; Schmullius, C.; Askne, Jan; Eriksson, L.E.B.: Evaluation of JERS-1 L-band SAR Backscatter for Stem Volume Retrieval in Boreal Forest. IGARSS´04 Symposium held in Anchorage September 2004, IEEE publication, pp. 515-518.

2003

Askne, Jan; Santoro, M; Smith-Jonforsen, G.; Fransson, J E S: Multitemporal repeat-pass SAR interferometry of boreal forests. IEEE Transactions on Geoscience and Remote Sensing, 41 (7) pp. 1540-1550.

1982

Elgered, Gunnar; Rönnäng, Bernt; Askne, Jan: Measurements of atmospheric water vapor with microwave radiometry. Radio Science, 17 (5) pp. 1258-1264.

Earth and Space Sciences

Askne, Jan