Project Publications

Journal Papers

[1] X. Wu, J. P. Walker, C. Rüdiger, R. Panciera and Y. Gao, (2016). Intercomparison of Alternate Soil Moisture Downscaling Algorithms Using Active-Passive Microwave Observations, IEEE Geoscience and Remote Sensing Letters, vol. 14, pp. 179-183.

[2] Yee, M. S., Walker, J. P., Monerris, A., Rüdiger, C. and Jackson, T. J., (2016) On the Identification of Representative In-situ Soil Moisture Monitoring Stations for the Validation of SMAP Soil Moisture Products in Australia, Journal of Hydrology, 537: 367-381. 

[3] Y.  Huang, J. P. Walker, G. Ying, X. Wu and A. Monerris, (2016). Estimation of Vegetation Water Content from the Radar Vegetation Index at L-band, IEEE Transactions on Geoscience and Remote Sensing. vol. 54, no. 2, pp. 981-989.

[4] Gao, Y., Walker, J. P., Allahmoradi, M., Monerris, A., Ryu, D., (2015). Optical Sensing of Vegetation Water Content: A Synthesis Study, IEEE Journal of Selected Topics in Remote Sensing, 8(4): 1456-1464. 

[5] X. Wu, J. P. Walker, C. Rüdiger, R. Panciera and D. Gray, (2015) Simulation of the SMAP Data Stream from SMAPEx Field Campaigns in Australia, IEEE Transactions on Geoscience and Remote Sensing, vol. 53, no. 4, pp. 1921-1934.

[6] X. Wu, J. P. Walker, C. Rüdiger and R. Panciera. (2015). Effect of Land Cover Type on the SMAP Active-Passive Soil Moisture Downscaling Algorithm Performance, IEEE Geoscience and Remote Sensing Letters, vol. 12, no. 4, pp. 846-850.

[7] X. Wu, J. P. Walker, N. N. Das, R. Panciera and C. Rüdiger. (2014). Evaluation of the SMAP Brightness Temperature Downscaling Algorithm using Active-Passive Microwave Observations, Remote Sensing of Environment,  vol. 155, pp. 210-221.

[8] Turner, R., Panciera, R., Tanase, M., Lowell, K., Hacker, J. and Walker, J.P. (2014) Estimation of Soil Surface Roughness in Agricultural Soils using Airborne LiDAR.  Remote Sensing of Environment, (140): 107–117.

[9] Panciera, R., Tanase, M., Lowell, K. and Walker, J.P. (2013). Evaluation of the IEM, Dubois and Oh surface scattering models with airborne SAR. IEEE Transactions of Geoscience and Remote Sensing, DOI: 10.1109/TGRS.2013.2286203.

[10] Panciera, R., Walker, J. P., Jackson, T. J., Gray, D., Tanase, M. A., Ryu, D., Monerris, A., Yardley, H., Rüdiger, C., Wu, X., Gao, Y., Hacker, J. (2013). The Soil Moisture Active Passive Experiments (SMAPEx): Towards Soil Moisture Retrieval from the SMAP Mission. IEEE Transaction on Geoscience and Remote Sensing, DOI: 10.1109/TGRS.2013.2241774

[11] Tanase, M.A., Panciera, R., Lowell, K., Tian, S., Garcia-Martin, A. and Walker, J.P. (2013) Sensitivity of L-band Radar Backscatter to Forest Biomass in Semi-arid Environments: A Comparative Analysis of Parametric and Non-Parametric Models.  IEEE Transactions on Geoscience and Remote Sensing, DOI:10.1109/TGRS.2013.2283521

[12] Tanase, M.A., Panciera, R., Lowell, K., Aponte, C., Hacker, J.M. and Walker, J.P. (2013) Forest Biomass Estimation at High Spatial Resolution: Radar Versus Lidar Sensors. IEEE Geoscience and Remote Sensing Letters, DOI: 10.1109/LGRS.2013.2276947

Conference Papers

[1] Elhassan, S., Wu, X. and Walker, J.P. (2013). Standing water detection using radar. International Congress on Modelling and Simulation (MODSIM), Adelaide, Australia, 1-6 December.

[2] Gao, Y., Walker, J.P., Panciera, R., Monerris A. and Ryu, D. (2013). Retrieval of soil surface roughness from active and passive microwave observations. International Congress on Modelling and Simulation (MODSIM), Adelaide, Australia, 1-6 December.

[3] Wu, X., Walker, J.P., Rüdiger, C., Panciera, R. and Das, N.N. (2013). Downscaling of coarse-resolution radiometer brightness temperature by high-resolution radar backscatter. International Congress on Modelling and Simulation (MODSIM), Adelaide, Australia, 1-6 December.

[4] Panciera, R., MacGill, F., Tanase, M., Lowell, K. and Walker, J.P. (2013) Sensitivity of TerraSAR X-band data to surface parameters in bare agricultural areas. IEEE International Geoscience and Remote Sensing Symposium, Melbourne, Australia, July 21-26.

[5] Satalino, G., Mattia, F., Balenzano A., Panciera, R. and Walker, J.P. (2013) Soil moisture maps from time  series of PALSAR-1 scansar data over Australia. IEEE International Geoscience and Remote Sensing Symposium, Melbourne, Australia, July 21-26.

[6] Tanase, M., Panciera, R., Lowell, K., Hacker, J. and Walker, J.P. (2013) Estimation of forest biomass from L-band polarimetric decomposition components. IEEE International Geoscience and Remote Sensing Symposium, Melbourne, Australia, July 21-26.

[7] Tian, S., Tanase, M., Panciera, R., Hacker, J. and Lowell, K. (2013) Forest biomass estimation using Radar and Lidar synergies. IEEE International Geoscience and Remote Sensing Symposium, Melbourne, Australia, July 21-26.

[8] Vittucci, C., Guerriero, L., Ferrazzoli, P., Rahmoune, R., Tanase, M., Panciera, R., Monerris, A., Rüdiger, C. and Walker, J.P. (2013) Airborne forest monitoring during SMAPEx-3 campaign. IEEE International Geoscience and Remote Sensing Symposium, Melbourne, Australia, July 21-26.

[9] Walker, J., Kim, E., Hacker, J., Goodberlet, M., Panciera, R. and Rüdiger, C. (2013) The polarimetric L-band multi-beam radiometer. IEEE International Geoscience and Remote Sensing Symposium, Melbourne, Australia, July 21-26.

[10] Wu, X., Walker, J., Das, N., Panciera, R. and Rüdiger, C. (2013) Towards a medium-resolution brightness temperature product from active and passive microwave observations. IEEE International Geoscience and Remote Sensing Symposium, Melbourne, Australia, July 21-26.

[11] Vittucci, C., Guerriero, L., Ferrazzoli, P., Rahmoune, R., Tanase, M., Panciera, R., Monerris, A., Rüdiger, C. and Walker, J.P. (2013) Soil Moisture Monitoring over Australian Forests using airborne data. Satellite Soil Moisture Validation and Application Workshop, ESA/ESRIN, Frascati, Italy, 1-3 July.

[12] Walker, J. P., Wu, X., Gao, Y., Monerris, A., Panciera, R., Jackson, T.,O'Neill, P., Das, N., Gray, D. and Ryu, D., 2012. The Soil Moisture Active Passive Experiments: SMAPEx. 3rd SMAP Cal/Val Workshop, Oxnard, CA, 14-16 November, 2012.

[13] Wu, X., Walker, J. P., Panciera, R., Rüdiger, C., and Das, N., 2012. Towards medium-resolution brightness temperature retrieval from active and passive microwave observations. 3rd SMAP Cal/Val Workshop, Oxnard, CA, 14-16 November, 2012. (poster)

[14] Monerris, A., Rüdiger, C., Zreda, M., Walker, J. P., and Panciera, R., 2012. Mapping Soil Moisture with Cosmic Ray Probes over Grassland. 3rd SMAP Cal/Val Workshop, Oxnard, CA, 14-16 November, 2012. (poster)

[15] Walker, J. P., O'Neill, P., Wu, X., Gao, Y., Monerris, A., Panciera, R., Jackson, T., Gray, D. and Ryu, D., 2012. An airborne simulation of the SMAP data stream. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Munich, Germany, 22-27 July, 2012. Invited

[16] Walker, J. P., Monerris, A., Gao, Y., Wu, X., Panciera, R., Tanase, M., Ryu, D., Gray, D., Yardley, H., Goh, A. and Jackson, T. J., 2012. The Soil Moisture Active Passive Experiments: Towards Active Passive Retrieval and Downscaling. AGU Chapman Conferencce on Remote Sensing of the Terrestrial Water Cycle, Kona, Hawaii, USA, 19-22 February, 2012. (poster)

[17] Monerris, A., Rüdiger, C., Zreda, M., Walker, J. P. and Panciera R., 2012. Mapping Soil Moisture Variability: Inter-comparison Between L-band Radiometry and Cosmic Ray Neutron Emissions. AGU Chapman Conferencce on Remote Sensing of the Terrestrial Water Cycle, Kona, Hawaii, USA, 19-22 February, 2012. (poster)

[18] Monerris, A., J. P. Walker, et al. (2011). The third soil moisture active passive experiment. In Chan, F., Marinova, D. and Anderssen, R. S. (eds). The 19th International Congress on Modeling and Simulation (MODSIM2011). Modelling and Simulation Society of Australia and New Zealand, 12-16 December 2011, pp. 1980-1986. ISBN: 978-0-9872143-1-7.

[19] Gao, Y., J. P. Walker, et al. (2011). Validation of a τ-ω model with Soil Moisture Active Passive Experiment (SMAPEx) data sets in Australia. In Chan, F., Marinova, D. and Anderssen, R. S. (eds). The 19th International Congress on Modeling and Simulation (MODSIM2011). Modelling and Simulation Society of Australia and New Zealand, 12-16 December 2011, pp. 1944-1950. ISBN: 978-0-9872143-1-7.

[20] Wu, X., J. P. Walker, et al. (2011). Towards medium-resolution brightness temperature retrieval from active and passive microwave. In Chan, F., Marinova, D. and Anderssen, R. S. (eds). The 19th International Congress on Modeling and Simulation (MODSIM2011). Modelling and Simulation Society of Australia and New Zealand, 12-16 December 2011, pp. 2023-2029. ISBN: 978-0-9872143-1-7.

[21] Gray, D., Yardley, H., Yang, R., Walker, J. P., Bates, B., Panciera, R., Hacker, J., McGrath, A. and Goh, A., 2011. PLIS: An Airborne Polarimetric L-band Interferometric Synthetic Aperture Radar. Asia-Pacific International Conference on Synthetic Aperture Radar APSAR 2011, Seoul, Korea, 26-30, September, 2011.

Conference Abstracts

[1] Walker, J. P., Wu, X., Gao, Y., Monerris, A., Panciera, R., Jackson, T., Gray, D. and Ryu, D., 2012. Towards SMAP: An airborne simulation of the data stream. 39th COSPAR Scientific Assembly, Mysore, India, 14-22 July, 2012.

[2] Walker, J., O’Neill, P., Wu, X., Gao, Y., Monerris, A., Panciera, R., Jackson, T., Gray, D. and Ryu, D. An Airborne Simulation of the SMAP Data Stream, IEEE IGARSS, July 2012, Munich, Germany. Invited

[3] Walker, J. P., Monerris, A., Gao, Y., Wu, X., Panciera, R., Tanase, M., Ryu, D., Gray, D., Yardley, H., Goh, A. and Jackson, T. J., 2012. The Soil Moisture Active Passive Experiments: Towards Active Passive Retrieval and Downscaling. AGU Chapman Conferencce on Remote Sensing of the Terrestrial Water Cycle, Kona, Hawaii, USA, 19-22 February, 2012.

[4] Walker, J. P., Panciera, R., Ryu, D., Gray, D. and Jackson, T., 2011. The Australian SMAPEx and Core Validation Site. 2nd SMAP Cal/Val Workshop, Oxnard, CA, 3-5 May, 2011.

[5] Panciera, R., Walker, J., Jackson, T., Ryu, D., Yardley, H., Gray, D. Application of a Bayesian Downscaling Algorithm approach for SMAP Active and Passive Microwave Soil Moisture Estimation, International Symposium on Remote Sensing of Environment , April 2011, Sydney, Australia.

[6] Walker, J. P., and many others, 2011. Overview: 8-years of Soil Moisture Cal/Val in Australia. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

[7] Panciera, R., Walker, J. P., Ryu, D., Gray, D. and Jackson, T., 2011. SMAPEx-1 & SMAPEx-2: An Overview. The 1st Australian Workshop on Airborne Cal/Val for Microwave Satellite Missions and 5th NAFE Workshop, Monash University, Australia, 23-25 February, 2011.

[8] Panciera, R., Walker, J. P., Ryu, D., Gray, D., Jackson, T. J. and Yardley, H., 2010. The Soil Moisture Active Passive Experiments (SMAPEx) for SMAP Algorithm Development. Fall Meeting, AGU, San Francisco, Calif., 13-17 December, 2010. Invited

[9] Walker, J. P., Panciera, R., Ryu, D., Gray, D. and Jackson, T. J., 2010. SMAPEx: Soil Moisture Active Passive Remote Sensing Experiment for SMAP Algorithm Development. 30th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, 25-30 July, 2010. Invited

[10] Jackson, T. J., Cosh, M., Bindlish, R., Crow, W., Colliander, A., Njoku, E., McDonald, K., Kimball, J. S., Belair, S., Walker, J. P., Panciera, R., Entekhabi, D., O'Nell, P., 2010. Soil Moisture Active Passive (SMAP) Calibration and Validation Plan and Current Activities. 30th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Honolulu, 25-30 July, 2010.

[11] Panciera, R., Walker, J. P., Ryu, D., Gray, D., and Jackson, T., 2009. SMAPEx: Soil Moisture Active Passive Remote Sensing Experiment for SMAP Algorithm Development. 6th International Scientific Conference on the Global Energy and Water Cycle (GEWEX), Melbourne, Australia, 24-28 August, 2009.

Theses/Reports

[1] N. Ye, J. P. Walker, C. Rüdiger, T. Jackson, X. Wu, R. de Jeu, D. Entekhabi, O. Merlin, E. Kim and L. Renzullo, 2015. The Fifth Soil Moisture Active Passive Experiment (SMAPEx-5): Work Plan. Department of Civil Engineering, Monash University. 147pp

[2] N. Ye, J. P. Walker, C. Rüdiger, T. Jackson, X. Wu, R. de Jeu, D. Entekhabi, O. Merlin, E. Kim and L. Renzullo, 2015. The Fourth Soil Moisture Active Passive Experiment (SMAPEx-4): Work Plan. Department of Civil Engineering, Monash University. 159pp.

[3] Monerris, A., Walker, J. P., Panciera, R., Jackson, T., Tanas, M., Gray, D. and Ryu, D., 2011. The Third Soil Moisture Active Passive Experiment (SMAPEx-3): Work Plan. Department of Civil Engineering, Monash University. 160pp.

[4] Panciera, R., Walker, J. P., Ryu, D., Gray, D. and Jackson, T., 2010. The Soil Moisture Active Passive Experiment 2 (SMAPEx-2): Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 133pp.

[5] Panciera, R., Walker, J. P., Ryu, D., Gray, D. and Jackson, T., 2010. The Soil Moisture Active Passive Experiments (SMAPEx): Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 134pp.