Publications | Press Releases | Press Coverage Furfaro, R., Ganapol, B.D., Johnson, L.F. and Herwitz, S.R. 2007. Neural network algorithm for coffee ripeness evaluation using airborne images. Applied Engineering in Agriculture 23: 379-387. Herwitz, S.R., Dunagan, S.E., Sullivan, D.V., Slye, R.E., Leung, J.G. and Johnson, L.F. 2006. Wireless command-and-control of UAV-based imaging LANs. NASA Technical Memorandum, NASA/TM-2006-213479, 14 pp. Herwitz, S.R., Dolci, R.J., Berthold, R.W. and Tiffany, G.C. 2005. Chemical sensing from a low-flying UAV: data for first responders during a staged terrorist event. Proceedings of the Department of Homeland Security Partnering Conference, Boston, MA. Berthold, R.W. and Herwitz, S.R. 2005. NASA UAV remote sensing program. National Association for Search and Rescue (NASAR) Conference, Oakland, CA. Herwitz, S.R., Johnson, L.F., Dunagan, S.E., Higgins, R.G., Sullivan, D.V., Zheng, J., Lobitz, B.M., Leung, J.G., Gallmeyer, B., Aoyagi, M., Slye, R.E. and Brass, J. 2004. Imaging from an unmanned aerial vehicle: agricultural surveillance and decision support. Computers and Electronics in Agriculture 44: 49-61. Herwitz, S.R. 2004. Nightime UAV vineyard mission: challenges of sense-and-avoid in the NAS. Proceedings of the AIAA 3rd Unmanned Unlimited Technical Conference, Chicago, IL. Johnson, L.F., Herwitz, S.R., Lobitz, B.M. and Dunagan, S.E. 2004. Feasibility of monitoring coffee field ripeness with airborne multispectral imagery. Applied Engineering in Agriculture 20: 845-849. Herwitz, S.R., Johnson, L.F., Dunagan, S.E., Higgins, R.G., Sullivan, D.V., Zheng, J., Lobitz, B.M., Leung, J.G., Gallmeyer, B., Aoyagi, M., Slye, R.E. and Brass, J. 2003. Coffee field ripeness detection using high resolution imaging systems of a solar-powered UAV. Proceedings of the 30th International Symposium on Remote Sensing of Environment, Honolulu, HI. Johnson, L.F., Herwitz, S.R., Dunagan, S.E., Lobitz, B.M., Sullivan, D.V. and Slye, R.E. 2003. Collection of ultra high spatial and spectral resolution image data over California vineyards with a small UAV. Proceedings of the 30th International Symposium on Remote Sensing of Environment, Honolulu, HI. Herwitz, S.R., Leung, J.G., Aoyagi, M., Billings, R.L., Wei, M.Y., Dunagan, S.E., Higgins, R.G., Sullivan, D.V. and Slye, R.E. 2003. Wireless LAN for operation of high resolution imaging payload on a high altitude solar-powered unmanned aerial vehicle. Proceedings of the International Telemetering Conference, Las Vegas, NV. Herwitz, S.R., Johnson, L.F., Dunagan, S.E., Brass, J.A. and Witt, G. 2003. Orchestrating a near-real-time imaging mission in the National Airspace using a solar-powered UAV. Proceedings of the 2nd AIAA UAV Conference, San Diego, CA. Furfaro, R., Ganapol, B., Johnson, L.F. and Herwitz, S.R. 2003. Leaf-canopy model inversion via a neural network: application to ripe cherry estimation for UAV images. Proceedings of the 19th International Conference on Transport Theory, Rio de Janeiro, Brazil. Herwitz, S.R., Dunagan, S.E., Sullivan, D.V., Higgins, R.G., Johnson, L.F., Zheng, J., Slye, R.E, Brass, J.A., Leung, J.G., Gallmeyer, B.A. and Aoyagi, M. 2003. Solar-powered UAV mission for agricultural decision support. International Geoscience and Remote Sensing Symposium, Toulouse, France. Furfaro, R., Ganapol, B., Johnson, L.F. and Herwitz, S.R. 2003. Leaf-canopy inversion model via neural network algorithm: application to coffee cherry estimation using UAV images. American Geophysical Union, San Francisco, CA. Dunagan, S.E. 2003. Airborne Miniature Imaging Spectrograph (AiMS) Instrument Description [white paper]. Herwitz, S.R., Leung, J.G., Higgins, R.G., Dunagan, S.E. and Arvesen, J.C. 2002. Remote command-and-control of imaging payloads using commercial off-the-shelf technology. Proceedings of the International Geoscience and Remote Sensing Symposium, Toronto. Herwitz, S.R., Johnson, L.F., Arvesen, J.C., Leung, J.G. and Dunagan, S.E. 2002. Precision agriculture as a commercial application for solar-powered UAVs. Proceedings of the 1st AIAA UAV Conference, Portsmouth, VA. Herwitz, S.R. 2001. Demonstrating the commercial potential of a remotely-piloted solar-powered aircraft: imaging coffee field ripening. Proceedings of the TAAC Symposium on Unmanned Aerial Vehicles: Innovative Technology for Tomorrow's Aviation Needs. Las Cruces, New Mexico. Herwitz, S.R. 2000. Coffee harvest optimization using UAV platforms for the acquisition of high resolution multispectral imagery. Proceedings of the NASA ERAST Exclusive Preview, Dryden Flight Research Center, NASA/CP-2000-209031, pp. 49-54. Herwitz, S.R., Slye, R.E. and Turton, S.M. 2000. Long-term survivorship and crown area dynamics of tropical rainforest canopy trees. Ecology 81: 585-597. Herwitz, S.R., Sandler, B. and Slye, R.E. 2000. Twenty-one years of crown area change in the Jasper Ridge Biological Preserve based on georeferenced multitemporal aerial photographs. International Journal of Remote Sensing 21: 45-60. Herwitz, S.R., Slye, R.E. and Turton, S.M. 1998. Co-registered aerial stereopairs from low-flying aircraft for the analysis of long-term tropical rainforest canopy dynamics. Photogrammetric Engineering and Remote Sensing 64: 397-405.