Tanner, A.B., S.T. Tanner, T.C. Gaier, B.H. Lambrigtsen, B.H. Lim and C.S. Ruf, “Field tests of the GeoSTAR demonstrator instrument,” Proc. 2007 IEEE International Geoscience and Remote Sensing Symposium, Barcelona, SPAIN, 23-27 July, 2007. 

Ruf, C., S. Misra, S. Gross and R. De Roo, “Detection of RFI by its Amplitude Probability Distribution,” Proc. 2006 IEEE International Geoscience and Remote Sensing Symposium, Denver, CO, 31 Jul - 4 Aug 2006.

Lim, B.H. and C.S. Ruf, “Calibration of a Fully Polarimetric Microwave Radiometer Using a Digital Polarimetric Noise Source,” Proc. 2006 IEEE International Geoscience and Remote Sensing Symposium, Denver, CO, 31 Jul - 4 Aug 2006.

Tanner, A.B., W.J. Wilson, B.H. Lambrigtsen, S.J. Dinardo, S.T. Brown, P. Kangaslahti, T.C. Gaier, C.S. Ruf, S.M. Gross, B.H. Lim, S. Musko and S. Rogacki, “Initial Results of the Geosynchronous Thinned Array Radiometer (GeoSTAR),” Proc. 2006 IEEE International Geoscience and Remote Sensing Symposium, Denver, CO, 31 Jul - 4 Aug 2006.

Brown, S., S. Desai, S. Keihm and C. Ruf, “JMR Noise Diode Stability After Three Years On-Orbit and Recalibration Methodology,” 2006 Specialist Meeting on Microwave Radiometry, San Juan, PR, 28 Feb – 3 Mar 2006.

Tanner, A.B., B. H. Lambrigsten, S. T. Brown, W. J. Wilson, J.R.Piepmeier, C.S. Ruf and B. Lim, “A Prototype Geostationary Synthetic Thinned Aperture Radiometer (GeoSTAR) for Atmospheric Temperature Sounding,” 2006 Specialist Meeting on Microwave Radiometry, San Juan, PR, 28 Feb – 3 Mar 2006.

De Roo, R., C. Ruf, B. Lim, L. van Nieuwstadt, C. Wineland and R. Gandhi, “L-band and K-band Correlated Noise Calibration System (CNCS) Architecture,” 2006 Specialist Meeting on Microwave Radiometry, San Juan, PR, 28 Feb – 3 Mar 2006.

Misra, S., C.S. Ruf and R. DeRoo, “Agile Digital Detector for RFI Mitigation,” 2006 Specialist Meeting on Microwave Radiometry, San Juan, PR, 28 Feb – 3 Mar 2006.

Hilliard, L.M., N.L. Phelps, J.T. Riley, T.M. Markus, G.L. Bland, C.S. Ruf, R.W. Lawrence, S.C. Reising and R Pichel, “Prototype Cryospheric Experimental Synthetic Aperture Radiometer (CESAR),” Proc. 2005 IEEE International Geoscience and Remote Sensing Symposium, Seoul, KOREA, Vol. VII, 4925-4928, 25-29 July 2005.

Ruf, C.S., “Ensemble Scattering and RFI Speckle Caused by Collision Avoidance Radar,” Proc. URSI National Radio Science Meeting, Boulder, CO, F/J1-7, 215, 5-8 Jan 2005.

Bastian, T.S., R. Fisher, R. Bradley, D. Gary, G. Huford, S. White, A. Kerdraon, C. Ruf, “Low Frequency Solar Physics with the Frequency Agile Solar Radiotelescope,” Proc. URSI National Radio Science Meeting, Boulder, CO, J5-6, 446, 5-8 Jan 2005.

Renno, N., C. Ruf, L. Thompson, M. Sander and T. Linick, “ENG 450: A Multidisciplinary Design Experience,” Proc. AIAA Space 2004 Conference, San Diego, CA, AIAA-2004-5924, 28-30 Sept. 2004.

Ruf, C.S., S.T. Brown, S.T., Y. Hu and H. Kawakubo, “WindSat Calibration and Geophysical Parameter Estimation,” Proc. 2004 IEEE International Geoscience and Remote Sensing Symposium, Anchorage, AK, Vol. I, 379-382, 20-24 Sept. 2004.

Brown, S.T. and C.S. Ruf, “Simultaneous Retrieval of Surface Wind Speed and Rain Rate using Radar and Radiometer Measurements,” Proc. 2004 IEEE International Geoscience and Remote Sensing Symposium, Anchorage, AK, Vol. II, 1252-1255, 20-24 Sept. 2004.

Wilson, W.J., A.B. Tanner, B.H. Lambrigtsen, T.A. Doiron, J.R. Piepmeier and C.S. Ruf, “STAR Concept for Passive Microwave Temperature Sounding from Middle Earth Orbit (MeoSTAR),” Proc. 2004 IEEE International Geoscience and Remote Sensing Symposium, Anchorage, AK, Vol. II, 789-790, 20-24 Sept. 2004.

Tanner, A., W.J. Wilson, P.P Kangaslahti, B.H. Lambrigtsen, S.J. Dinardo, J.R. Piepmeier, C.S. Ruf, S. Rogacki, S.M. Gross and S. Musko, “Prototype development of a Geostationary Synthetic Thinned Aperture Radiometer, GeoSTAR,” Proc. 2004 IEEE International Geoscience and Remote Sensing Symposium, Anchorage, AK, Vol. II, 1256-1259, 20-24 Sept. 2004.

Lambrigtsen, B., W. Wilson, A. Tanner, T. Gaier, C. Ruf and J. Piepmeier, “GeoSTAR – A Microwave Sounder for Geostationary Satellites,” Proc. 2004 IEEE International Geoscience and Remote Sensing Symposium, Anchorage, AK, Vol. II, 777-780, 20-24 Sept. 2004.

Ruf, C. and C. Principe, “X-Band Lightweight Rainfall Radiometer First Light,” Proc. of the 2003 IEEE International Geoscience and Remote Sensing Symposium, Toulouse, FRANCE, ISBN 0-7803-7930-6, IEEE Cat. #03CH37477C, 21-25 July 2003.

Brown, S. and C. Ruf, “Using the Amazon Rainforest as a Blackbody Reference for the On-orbit Calibration of Microwave Radiometers,” Proc. of the 2003 IEEE International Geoscience and Remote Sensing Symposium, Toulouse, FRANCE, ISBN 0-7803-7930-6, IEEE Cat. #03CH37477C, 21-25 July 2003.

Brown, S., C. Ruf, S. Keihm and A. Kitiyakara, “Jason Microwave Radiometer On Orbit Calibration, Validation and Performance” Proc. of the 2003 IEEE International Geoscience and Remote Sensing Symposium, Toulouse, FRANCE, ISBN 0-7803-7930-6, IEEE Cat. #03CH37477C, 21-25 July 2003.

Lindström, S. and C. Ruf, “WindSat SDR and EDR On Orbit Calibration and Validation,” Proc. of the 2003 IEEE International Geoscience and Remote Sensing Symposium, Toulouse, FRANCE, ISBN 0-7803-7930-6, IEEE Cat. #03CH37477C, 21-25 July 2003.

Tran, N. E. Obligis, L. Eymard and C. Ruf, “Comparison of Microwave Radiometer Brightness Temperature over a Hot Reference Area.,” Proc. of the 2003 IEEE International Geoscience and Remote Sensing Symposium, Toulouse, FRANCE, ISBN 0-7803-7930-6, IEEE Cat. #03CH37477C, 21-25 July 2003, 2003.

Principe, C. and C.S. Ruf, “Calibration Methodology for Lightweight Rainfall Radiometer STAR Aircraft Sensor,” Proc. of the Second International Microwave Radiometer Calibration Workshop, Barcelona, Spain, 9-11 Oct 2002. 

Ruf, C.S. and J. Li, “Evaluation of Correlation Radiometers using Programmable Correlated Noise,” Proc. Second International Microwave Radiometer Calibration Workshop, Barcelona, Spain, 9-11 Oct 2002. 

Ruf, C.S., S.J. Keihm and S.T. Brown, “Early On Orbit Performance of the Jason-1 Microwave Radiometer,” Proc. of the 2002 Progress in Electromagnetics Research Symposium, 1-5 July 2002, Cambridge, MA, ISBN 0-9679674-2-2, 583, 2002.

Ruf, C., C. Principe, T. Dod, B. Gosselin, B. Monosmith, S. Musko, S. Rogacki, A. Stewart, Z. Zhang, “Lightweight Rainfall Radiometer STAR Aircraft Sensor,” Proc. of the 2002 IEEE International Geoscience and Remote Sensing Symposium, Toronto, CA, 24-28 June 2002, II: 850-852, IEEE Cat. #02CH37380, 2002.

Jones, W.L., J.-D. Park, J. Zec, C.S. Ruf, M.C. Bailey and J.W. Johnson, “A Feasibility Study for a Wide-Swath, Airborne, Hurricane Imaging Microwave Radiometer for Operational Hurricane Measurements,” Proc. of the 2002 IEEE International Geoscience and Remote Sensing Symposium, Toronto, CA, 24-28 June 2002, IEEE Cat. #02CH37380, 2002.

Gasiewski, A.J., C.S. Ruf, M. Younis and W. Wiesbeck, “Impacts of Mobile Radar and Telecommunications on Earth Remote Sensing in the 22-27 GHz Range,” Proc. of the 2002 IEEE International Geoscience and Remote Sensing Symposium, Toronto, CA, 24-28 June 2002, III: 1679-1681, IEEE Cat. #02CH37380, 2002.

Jones, W.L., J. Zec, J.W. Johnson, C. S. Ruf and M.C. Bailey, “A Feasibility Study for a Wide-Swath, High Resolution, Airborne Microwave Radiometer for Operational Hurricane Measurements,” Proc. of the 56^th Interdepartmental Hurricane Conference, 11-15 March 2002, New Orleans, LA, 2002.

Ruf, C.S. and Li, J., “Environmental Testing of Correlation Radiometer Pairs with a Digital Noise Source,” Proc. of the 7^th Specialist Meeting on Microwave Remote Sensing, 5-9 November 2001, Boulder, CO, 9, 2001. 

De Roo, R., A. England, C. Ruf, L. Van Nieuwstadt, P. Hansen, T. Rashid, J. Harvey, R. Miller and D. Boprie, “STAR-Light: An Airborne L-Band Synthetic Thinned Aperture Direct Sampling Digital Radiometer for Soil Moisture Monitoring in the Arctic,” Proc. of the 7^th Specialist Meeting on Microwave Remote Sensing, 5-9 November 2001, Boulder, CO, 28, 2001. 

Vandemark, D., N. Tran, C. Ruf and B. Chapron, “Active/Passive Study of Wind-dependent Signatures in Nadir-viewing Ocean Microwave Sensors,” Proc. of the 7^th Specialist Meeting on Microwave Remote Sensing, 5-9 November 2001, Boulder, CO, 123, 2001. 

Li, J. and C.S. Ruf, “Correlated Noise Calibration System for a Multichannel Interferometric Radiometer,” Proc. of the First International Microwave Radiometer Calibration Workshop, Adelphi, MD, 30-31 Oct 2000. 

Ruf, C.S., C.M. Principe and S.P. Neeck, “Enabling Technologies to Map Precipitation with Near-Global Coverage and Hour-Scale Revisit Times,” Proceedings of the 2000 International Geoscience and Remote Sensing Symposium, Honolulu, HI, IEEE Cat. #00CH37120, Vol. VII, 2988-2990, 2000.

Ruf, C.S., “Statistical Analysis of a Lower Bound on Microwave Radiometer Brightness Temperature from Space,” Proceedings of the 2000 International Geoscience and Remote Sensing Symposium, Honolulu, HI, IEEE Cat. #00CH37120, Vol. VII, 2825-2826, 2000.

Ruf, C.S., “Implications of an improved atmospheric absorption model on water vapor retrievals,” Proceedings of 6^th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, 15-18 March 1999, ITALY, VSP BV, The Netherlands, 137-144, 2000.

Giampaolo J. and C.S. Ruf, “A Temperature Dependent Correction to the Model for Microwave Excess Emissivity of the Ocean due to Surface Winds,” Proceedings of the 1999 International Geoscience and Remote Sensing Symposium, Hamburg, GERMANY, IEEE Cat. #99CH36293, Vol. IV, 2312-2314, 1999.

Cruz Pol, S.L. and C.S. Ruf, “Calibration of the model for ocean surface emissivity at microwave frequencies,” Proceedings of the 1999 International Geoscience and Remote Sensing Symposium, Hamburg, GERMANY, IEEE Cat. #99CH36293, Vol. IV, 2318-2320, 1999.

Ruf, C.S. and J.C. Giampaolo, “Littoral antenna deconvolution for a microwave radiometer,” Proceedings of the 1998 International Geoscience and Remote Sensing Symposium, Seattle, WA, IEEE Cat. #98CH36174, 378-380, July 1998.

Ruf, C.S., “Polarimetric radiometry - Coherent vs. incoherent detection,” Proceedings of the 1998 International Geoscience and Remote Sensing Symposium, Seattle, WA, IEEE Cat. #98CH36174, 2181-2183, July 1998.

Albrecht, B.A., G.G. Mace, W.J. Syrett, D. Thomas, C. Ruf, and J. Bobak, “Continental stratus characteristics from surface-based remote sensing systems,” Proc. 12th Intl. Conf. on Clouds and Precip., 9-23 August 1996.

Bobak, J.P. and C.S. Ruf, “Prediction of water vapor scale height from integrated water vapor measurements,” Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, Lincoln, NE, IEEE Cat. #96CH35875, 1692-1694, July 1996.

Cruz-Pol, S.L., C.S. Ruf, and S.J. Keihm “Atmospheric microwave absorption parameter estimation near 22 GHz,” Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, Lincoln, NE, IEEE Cat. #96CH35875, 1435-1437, July 1996.

Ruf, C. S. and S.E. Beus, “Estimation of the ocean/atmosphere boundary layer height of water vapor from space,” Proceedings of the 1996 International Geoscience and Remote Sensing Symposium, Lincoln, NE, IEEE Cat. #96CH35875, 1263-1265, July 1996.

Bobak, J.P. and C.S. Ruf, “An algorithm for improving the retrieval of cloud liquid water and water vapor using effective radiating temperature of clouds,” Proceedings of the Second Topical Symposium on Combined Optical-Microwave Earth and Atmosphere Sensing, Atlanta, GA, IEEE Cat. #95TH8015, 115-117, April 1995.  

Ruf, C.S.,  K. Aydin, and S. Mathur, “Rain rate estimation from attenuation measurements using a 35 GHz dual polarization propagation link,” Proceedings of the 1994 International Geoscience and Remote Sensing Symposium, Pasadena, CA, IEEE #94-CH3378-7, Vol. IV, 1777-1779, August 1994.

Ruf, C.S., W.J. Wilson, K.M. Chandra, and A.B. Tanner, “Digital correlator performance analysis for a synthetic aperture imaging radiometer,” Proceedings of the 1994 International Geoscience and Remote Sensing Symposium, Pasadena, CA, IEEE #94-CH3378-7, Vol. III, 1317-1319, August 1994.

Ruf, C.S., S.J. Keihm, and B. Subramanya, “TOPEX Microwave Radiometer in-flight performance evaluation,” Proceedings of the 1993 International Geoscience and Remote Sensing Symposium, Tokyo, JAPAN, IEEE #93CH3294-6, Vol. IV, 1759-1761, August 1993.

Ruf, C.S., “Improved array configurations for synthetic aperture interferometric radiometers,” Proceedings of the 1993 International Geoscience and Remote Sensing Symposium, Tokyo, JAPAN, IEEE #93CH3294-6, Vol. III, 1435-1437, August 1993.

Keihm, S.J., C.S. Ruf, and M.A. Janssen, “The TOPEX Microwave Radiometer: Verification Phase Evaluation,” Proceedings of the AGU 1992 Fall Meeting, San Francisco, CA, 299, Dec. 1992.

Janssen, M.A., S.J. Keihm, and C.S. Ruf, “The TOPEX microwave radiometer,” Proc. Specialist Meeting on Microwave Radiometry and Remote Sensing, Boulder, Colorado, 1992.

Ruf, C.S., “Error analysis of image reconstruction by a synthetic aperture interferometric radiometer,” Proceedings of the International Union of Radio Science (URSI) at IGARSS ‘92, Houston, TX, 96-97, May 1992.

Le Vine, D.M., L.M. Hilliard, C.T. Swift, C.S. Ruf and L.B. Garrett, “A synthetic aperture microwave radiometer to measure soil moisture and ocean salinity from space,” Proceedings of the 1991 International Geoscience and Remote Sensing Symposium, Espoo, Finland, 975-978, June 1991.

Wilson, W.J., C.S. Ruf, C.M. Satter and Y. Rahmat-Samii, “Design of a geostationary microwave precipitation radiometer,” Proceedings of the IEEE MTT-S International Microwave Symposium, Boston, MA, 1153-1156, June 1991.

Ruf, C.S., “Antenna performance for a synthetic aperture microwave radiometer in geosynchronous earth orbit,” Proceedings of the 1990 International Geoscience and Remote Sensing Symposium, College Park, MD, IEEE #90CH2825-8, Vol. II, 1589-1592, May 1990.

Ruf, C.S. and S.J. Keihm, “TOPEX/POSEIDON microwave radiometer - post-launch ground based calibration/validation,” Proceedings of the 1990 International Geoscience and Remote Sensing Symposium, College Park, MD, IEEE #90CH2825-8, Vol. I, 203-206, May 1990.

Ruf, C.S., “Sparse aperture interferometric radiometry (SAIR) for the remote sensing of the earth,” Proceedings of the 1989 International Symposium on Antennas and Propagation, Tokyo, JAPAN, ISBN4-88552-079-7, Vol. I, 89-92, August 1989.

Ruf, C.S., M.A. Janssen and S.J. Keihm, “TOPEX microwave radiometer system calibration; refining the SMMR heritage,” Proceedings of the 1989 International Geoscience and Remote Sensing Symposium, Vancouver, B.C., CANADA, IEEE #89CH2768-0, Vol. I, 271-272, July 1989.

Ruf, C.S. and C.T. Swift, “Atmospheric profiling of water vapour with a 20.5-23.5 GHz autocorrelation radiometer,” Proceedings of the 1988 International Geoscience and Remote Sensing Symposium, Edinburgh, UK, IEEE #88CH2497-6, Vol. II, 957-960, August 1988.

Swift, C.T., C. Ruf, A. Tanner and D. Le Vine, “The electronically steered thinned array radiometer (ESTAR),” Proceedings of the 1986 International Geoscience and Remote Sensing Symposium, Zurich, SWITZ., 591-593, October 1986.

Ruf, C.S. and C.T. Swift, “Electronically steered thinned array radiometer, system design, performance and calibration,” Proceedings of the 1985 International Geoscience and Remote Sensing Symposium, Amherst, MA, 635-640, October 1985.

OTHER PUBLICATIONS

Ruf, C.S., Review of “Introduction to Microwave Remote Sensing” by I.H. Woodhouse, The London Times Higher Education Supplement Textbook Guide, 24, XII, 26 May 2006.

Ruf, C., A. Warnock and D. Boprie, Cover Figure, IEEE Geosci. Remote Sens. Newsletter, Dec. 2007..