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  1. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Segawa : Cross-polarization dis- crimination measurement at the CS-2 experimental earth station, 1987 IEEE AP-S/URSI Symposium, Vol.1, pp.444-447, Blacksburg, VA, USA (June 1987).
  2. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Segawa : Depolarization due to raindrops and ice particles along Ka-band satellite communication path, 1988 IEEE AP-S/URSI Symposium, Vol.3, pp.1272-1275, Syracuse, NY, USA (June 1988).
  3. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Segawa : Characteristics of depolarization fluctuation of Ka-band satellite beacon with small attenuation, 1990 IEEE AP-S/URSI Symposium, Vol.4, pp.1812-1815, Dallas, TX, USA (May 1990).
  4. Y.Maekawa, S.Fukao, Y.Sonoi and F.Yoshino: Dual polarization radar observation of wintertime thunderclouds in Japan, 1991 IEEE international Geoscience and Remote Sensing Symposium (IGRASS¡Ç91), Vol.2, pp.505-508, Espoo, Finland, (June 1991).
  5. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Segawa : Calculation of depolarization cancellation of Ka-band satellite-to-ground path, 1991 IEEE AP-S/URSI Symposium, Vol.3, pp.1560-1563, London Ontario, Canada (June 1991).
  6. S.Fukao, G.Kotani, M.D.Yamanaka, T.Sato, Y.Maekawa, H.Uyeda, A.Sumi, A.Watanabe, T.Tsuda and S.Kato : MU radar observations of hierarchical structures of the Baiu front, Fifth Workshop on MST radar, pp.49-51, Aberystyth, Wales, UK (August 1991).
  7. Y.Maekawa, S.Fukao, M.Yamamoto, T.Tsuda, M.D.Yamanaka, T.Nakamura, S.Kato and R.F.Woodman : High-altitude-resolution observation of the upper stratosphere using the Jicamarca VHF radar, Fifth Workshop on MST radar, pp.116-121, Aberystyth, Wales, UK (August 1991).
  8. Y.Maekawa, S.Fukao, M.Yamamoto, M.D.Yamanaka, T.Tsuda, S.Kato and R.F.Woodman : Upper stratospheric vertical winds observed by the Jicamarca VHF radar, International Symposium on Middle Atmosphere Science (MAS Symposium), pp.151-152, Kyoto, Japan (March 1992).
  9. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Segawa : Rapid changes in depolarization due to thunderclouds obtained from CS-3 beacon signal observation, 1992 IEEE AP-S/URSI Symposium, Vol.2, pp.744-747, Chicago Illinois, USA (July 1992).
  10. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Segawa : Rain depolarization characteristics related to rainfall types, 1992 International Symposium on Antennas and Propagation (ISAP¡Ç92), Vol.4, pp.1041-1044, Sapporo, Japan (Sept. 1992).
  11. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Segawa : Ice depolarization characteristics on Ka-band satellite-to-earth path obtain from the CS-3 beacon signal observation, 1993 IEEE AP-S/URSI Symposium, Vol.2, pp.1081-1084, Ann Arbor, Michigan, USA (June 1993).
  12. Y.Maekawa, S.Fukao, Y.Sonoi and K..Masukura : Ice particles in wintertime thunderclouds observed by a dual polarization radar in relation to lightning locations, The sixth Scientific Assembly of the International Association of Meteorology and Atmospheric Physics (IAMAP-IAHS¡Ç93), M10-28, Yokohama, Japan (July 1993).
  13. Y.Maekawa, S.Fukao, M.Yamamoto, M.D.Yamanaka, T.Tsuda, S.Kato and R.F.Woodman : Observation of upper stratospheric turbulent scattering using high-power VHF Doppler radar technique, The sixth Scientific Assembly of the International Association of Meteorology and Atmospheric Physics (IAMAP-IAHS¡Ç93), M6-19, Yokohama, Japan (July 1993).
  14. M.D.Yamanaka, Y.Shibagaki, H.Hashiguchi, Y.Maekawa, H.Uyeda, A.Watanabe, I.Takayabu and S.Fukao : Hierarchical structures of vertical velocity variations near the Baiu front observed by the MU radar, The sixth Scientific Assembly of the International Association of Meteorology and Atmospheric Physics (IAMAP- IAHS¡Ç93), J4.1-29, Yokohama, Japan (July 1993).
  15. M.D.Yamanaka, S.Tsuda, H.Hashiguchi, Y.Maekawa and S.Fukao : Radial-vertical structure of the typhoon flo (T9019) in mature and transforming stages observed by the MU radar, The sixth Scientific Assembly of the International Association of Meteorology and Atmospheric Physics (IAMAP-IAHS¡Ç93), M2-30, Yokohama, Japan (July 1993).
  16. Y.Maekawa, S.Fukao, M.Yamamoto, M.D.Yamanaka, T.Tsuda, S.Kato and R.F.Woodman : Upper stratospheric vertical wind observations using high-power VHF Doppler radar technique, 1993 IEEE international Geoscience and Remote Sensing Symposium (IGRASS¡Ç93), Vol.2, pp.505-508, Tokyo, Japan, (August 1993).
  17. Y.Maekawa, N.S.Chang and A.Miyazaki : Cross-polarization discrimination measuremens on satellite-to-ground path using CS-3 beacon signal, 1993 IEEE international Geoscience and Remote Sensing Symposium (IGRASS¡Ç93), Vol.1, pp.295-297, Tokyo, Japan, (August 1993).
  18. Y.Maekawa, S.Fukao, Y.Sonoi and K..Masukura : Dual polarization radar observations of ice particles in wintertime thunderclouds related to lightning locations, 1993 IEEE international Geoscience and Remote Sensing Symposium (IGRASS¡Ç93), Vol.1, pp.298-300, Tokyo, Japan, (August 1993).
  19. Y.Maekawa : Observations of depolarization due to rain and ice on satellite- to-ground path (invited), XXIVth General Assembly of the International Union of Radio Science (URSI-GA), F6-1, Kyoto , Japan (August 1993).
  20. S.Fukao, M.D.Yamanaka, H.Hashiguchi, T.Tsuda and Y.Maekawa : Subtropical mesoscale meteorologu using the MU radar (poster), XXIVth General Assembly of the International Union of Radio Science (URSI-GA), F1-p-8, Kyoto , Japan (August 1993).
  21. Y.Maekawa, S.Fukao, M.Yamamoto, M.D.Yamanaka, T.Tsuda, S.Kato and R.F.Woodman : Upper stratospheric short period gravity waves observed by Jicamarca VHF Doppler radar (poster), Eighth International Symposium on Solar Terrestrial Physics (STEP), p.222, Sendai, Japan, (June 1994).
  22. Y.Shibagaki, M.D.Yamanaka, H.Uyeda, A.Watanabe, S,Fukao, Y.Maekawa and T.Tsuda : Hierarchical structures of medium-scale cyclones and cloud clusters near the Baiu front observed by the MU and meteorological radar, Eighth International Symposium on Solar Terrestrial Physics (STEP), p.245, Sendai, Japan, (June 1994).
  23. Y.Maekawa, N.S.Chang and A.Miyazaki : Attenuation ratio of Ka-band to Ku-band satellite signals and correlation with cross-polar phase on satellite-to-ground path, 1994 IEEE AP-S/URSI Symposium, Vol.2, pp.1324-1327, Seattle, Washington, USA (June 1994).
  24. Y.Maekawa, S.Fukao, Y.Sonoi and K..Masukura : Height distribution of ice particles in wintertime thunderclouds observed by a dual polarization radar (poster), 1994 IEEE international Geoscience and Remote Sensing Symposium (IGRASS¡Ç94), Vol.1, pp.29-31, Pasadena, California, USA, (August 1994).
  25. Y.Maekawa, S.Fukao, M.Yamamoto, M.D.Yamanaka, T.Tsuda, S.Kato and R.F.Woodman : Observation of upper stratospheric short period gravity waves using the Jicamarca VHF radar, 1994 IEEE international Geoscience and Remote Sensing Symposium (IGRASS¡Ç94), Vol.4, pp.2457-2459, Pasadena, California, USA, (August 1994).
  26. Y.Maekawa, S.Fukao, M.Yamamoto, M.D.Yamanaka, T.Tsuda, S.Kato and R.F.Woodman : Gravity waves observed by the Jicamarca VHF radar in the equatorial upper stratosphere (poster), The 9th International Symposium on Equatorial Aeronomy (ISEA), GP-3, Bali, Indonesia (March 1995).
  27. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Kojima : Characteristic changes in cross-polarization discrimination due to thunderclouds on satellite-to-ground path, 1995 IEEE AP-S/URSI Symposium, Vol.1, pp.278-281, Newport Beach, California, USA (June 1995).
  28. Y.Maekawa, S.Fukao, Y.Sonoi and K..Masukura : Sensing of ice particles in wintertime thunderclouds using C-band dual polarization radar, 1995 IEEE AP-S/URSI Symposium, p.166, Newport Beach, California, USA (June 1995).
  29. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Kojima : Characteristics changes in depolarization due to lightning discharges on Ka-band satellite-to-ground path, Progress in Electromagnetic Research Symposium (PIERS) 1995, p.79, Seatlle, Washington, USA (July 1995).
  30. Y.Maekawa, S.Fukao, M.Yamamoto, M.D.Yamanaka, T.Tsuda, S.Kato and R.F.Woodman : Radiowave scattering of the atmosphere observed by the Jicamarca VHF radar in the upper stratosphere, Progress in Electromagnetic Research Symposium (PIERS) 1995, p.909, Seatlle, Washington, USA (July 1995).
  31. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Kojima : Depolarization effects of thunder clouds on the radiowave propagation in satellite communication links, 10th International Conference on Atmospheric Electricity, Vol.1, pp.480-483, Osaka, Japan (June 1996).
  32. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Kojima : Increase and decrease in depolarization of Ka-band satellite beacon signal in thunderstorm events, 1996 IEEE AP-S/URSI Symposium, Vol.3, pp.1876-1879, Baltimore, Maryland, USA (July 1996).
  33. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Kojima : Observations of depolarization due to rain and ice using the Ka-band satellite beacon signal in Japan (invited), XXVth General Assembly of the International Union of Radio Science (URSI-GA), F9.8, Lille, France (August 1996).
  34. T.Hatsuda, N.Okuno, H.Narita, K.Nishiura, K.Kudo, R.Mitsuhashi and Y.Maekawa, Systematic consideration of multiple satellites diversity on 14/12 GHz band in snowing climate, 1996 International Symposium on Antennas and Propagation (ISAP¡Ç96), Vol.2, pp.573-576, Chiba, Japan (Sept. 1996).
  35. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Kojima : Characteristic rapid changes in depolarization of Ka-band satellite signal in thunderstorm events, 1996 International Symposium on Antennas and Propagation (ISAP¡Ç96), Vol.2, pp.577-580, Chiba, Japan (Sept. 1996).
  36. M.D.Yamanaka, M.Fukase, Y.Shibagaki, H.Hashiguchi, Y.Maekawa and S.Fukao, nternal structure of Typhoon Orchid (T9426) observed by VHF/UHF radars, International workshop on the climate system of monsoon Asia, pp.335-338, Kyoto, Japan (Dec. 1996).
  37. Y.Shibagaki, M.D.Yamanaka, H.Uyeda, A.Watanabe, Y.Maekawa and S.Fukao, Hierarchical Structures of Medium-Scale Cyclones and Cloud Clusters near the Baiu Front Observed by MU and Meteorological Radars, International workshop on the climate system of monsoon Asia, pp.347-350, Kyoto, Japan (Dec. 1996).
  38. Y.Maekawa, N.S.Chang, A.Miyazaki and T.Kojima : Observations of the rain attenuation of Ku-band and Ka-band satellite signals and the depolarization due to rain and ice, 1997 IEEE AP-S/URSI Symposium, p.337, Montreal, Canada (July 1997).
  39. Y.Maekawa, Y.Shibagaki, M.D.Yamanaka and S.Fukao, Simultaneous observation of Ku-band satellite signal level fluctuation and clear-air turbulent echoes from VHF high-power radar, 1997 IEEE AP-S/URSI Symposium, p.459, Montreal, Canada (July 1997).
  40. Y.Shibagaki, M.D.Yamanaka, S.Shimizu, H.Uyeda, A.Watanabe, Y.Maekawa and S,Fukao : Hierarchical Structures of Medium-Scale Cyclones and Cloud Clusters near the Baiu Front Observed by MU and Meteorological Radars, The 7th Scientific Assembly of the International Association of Meteorology and Atmospheric Physics, IM2PPPP, Melbourne, Australia (July 1997).
  41. M.Fukase, M.D.Yamanaka, Y.Shibagaki, H.Hashiguchi, Y.Maekawa and S,Fukao : Internal Structure of Typhoon Orchid (T9426), The 7th Scientific Assembly of the International Association of Meteorology and Atmospheric Physics, IM2QQQQ, Melbourne, Australia (July 1997).
  42. Y.Shibagaki, M.D.Yamanaka, H.Hashiguchi, A.Watanabe, H.Uyeda, Y.Maekawa and S,Fukao : Hierarchical Structures of Vertical Velocities and Cloud Clusters near the Baiu Front Observed by MU and Meteorological Radars, The 8th MST radar workshop, pp.204-207, India (Dec. 1997).
  43. Y.Shibagaki, M.D.Yamanaka, S.Shimizu, H.Uyeda, A.Watanabe, Y.Maekawa and S,Fukao : Convective Cloud System near the Medium-scale Cyclone Center Observed by the MU and Meteorological Radars, The 8th MST radar workshop, pp.251-254, India (Dec. 1997).
  44. Y.Shibagaki, M.Fukase, M.D.Yamanaka, H.Hashiguchi, Y.Maekawa and S,Fukao : Internal Structure of Typhoon Orchid (T9426), The 8th MST radar workshop, pp.220-223, India (Dec. 1997).
  45. Y.Shibagaki, M.D.Yamanaka, S.Shimizu, H.Uyeda, A.Watanabe, Y.Maekawa and S,Fukao : Convective Cloud System near the Medium-scale Cyclone Center Observed by the MU and Meteorological Radars, The 4th wind profiling workshop, pp.294-296, Colorado, USA (Sept. 1998).
  46. Y.Shibagaki, M.Fukase, M.D.Yamanaka, H.Hashiguchi, Y.Maekawa and S,Fukao : Internal Structure of Typhoon Orchid (T9426), The 4th wind profiling workshop, pp.297-299, Colorado, USA (Sept. 1998).
  47. Y.Maekawa, Characteristics of rain attenuation fluctuation on Ka-band earth-space path related to rain front passage, Proc. of the 8th URSI Commission F Triennial Open Symposium, pp.258-271, Aveiro, Portugal (Sept. 1998).
  48. T.Hatsuda, R.Mitsuhashi, Y.Aoki, H.Echigo, F.Takahata, Y.Maekawa and K.Fujisaki, Long distance sate-diversity (SD) characteristics by using new measuring system, 1999 IEEE AP-S/URSI Symposium, Vol.1, pp.408-411, Orlando, Florida, (July 1999).
  49. Y.Maekawa, Depolarization characteristics on Ka-band earth-space path related to rain front passage, XXVIth General Assembly of the International Union of Radio Science, FP.27, Toronto, Canada (Aug. 1999).
  50. Y.Maekawa : Year-to-year variations in attenuation ratio of Ka-band to Ku-band satellite signals, 2000 International Symposium on Antennas and Propagation (ISAP2000), Vol.1, pp.281-284, Fukuoka, Japan (August 2000).
  51. Y.Sonoi , Y.Maekawa, Z.-I. Kawasaki and S.Fukao : Relationship between Updrafts and disturbance indexes associated with lightning discharges in winter thunderclouds observed by C-band meteorological radar, Ka-band Doppler radar and SAFIR, 5th International Workshop on Physics of Lightning, pp.39-40, Nagoya, Japan (Sept. 2001)
  52. Y.Maekawa : Rain attenuation characteristics on Ku and Ka band satellite communications related to the kinds of rain fronts, Joint Conference of Satellite Communications (JC-SAT 2001), Vol.1, pp.109-114, (Oct. 2001).
  53. Y.Maekawa : A study on the effects of satellite diversity on Ka-band rain attenuation in three earth-space paths, XXVIIth General Assembly of the International Union of Radio Science, FP.P.7, Maastricht, Netherlands (Aug. 2002).
  54. S. Ogata, Y. Shibagaki, Y. Maekawa, Y. Sonoi, M. Teshiba, H. Hashiguchi and S. Fukao : C-band and Millimeter-wave radar observations of wintertime thunder clouds related to the polarity of the lightning discharrges, International conference on mesoscale convective systems and heavy rainfall/snowfall in East Asia, pp.398-401, Tokyo, Japan (Oct. 2002).
  55. Y. Maekawa, Y. Shibagaki, S. Ogata, Y. Sonoi, M. Teshiba, H. Hashiguchi and S. Fukao : Simultanious observations of wintertime thunder clouds using Millmeter-wave and C-band radars along the coast of Mikuni, International conference on mesoscale convective systems and heavy rainfall/snowfall in East Asia, pp.481-484, Tokyo, Japan (Oct. 2002).
  56. Y. Shibagaki, M. D. Yamanaka, M. Kita-Fukase, H. Hashiguchi, Y. Maekawa and S. Fukao : Meso-alpha-scale wind field and precipitating clouds in Typhoon 9426 (Orchid) observed by the MU radar, 10th International MST Radar Workshop, Piura, Peru (May 2003).
  57. Y. Maekawa, S. Ogata, Y. Shibagaki, Y. Sonoi, M. Teshiba, H. Hashiguchi and S. Fukao : Multi-wavelength radar observations of wintertime thunder clouds related to the polarity of the lightning discharges, Proceedings of 12th International Conference on Atmospheric Electricity, Vol.1, pp.13-16, Versailles, France (June 2003).
  58. Y.Sonoi , Y.Maekawa, Z.-I. Kawasaki and S.Fukao : Correlation coefficients between disturbance indexes and updraft associated with lightning discharges observed by two kinds of radars and SAFIR, Proceedings of 12th International Conference on Atmospheric Electricity, Vol.1, pp.245-248, Versailles, France (June 2003).
  59. Y. Maekawa, T. Fujiwara, Y. Shibagaki, T. Soto, H. Hashiguchi M. Yamamoto and S. Fukao : Effects of rainfall on satellite communication links from the equatorial atmosphere radar to Japan, 13th International Union of Geodesy and Geophysics General Assembly Vol.A, pp.390-391, Sapporo, Japan (July 2003).
  60. Y. Maekawa, Y. Shibagaki, S. Ogata, Y. Sonoi, M. Teshiba, H. Hashiguchi and S. Fukao : Wintertime thunder cloud observations using multi-wavelength radar techniques along the coast of Mikuni, 13th International Union of Geodesy and Geophysics General Assembly Vol.A, p.391, Sapporo, Japan (July 2003).
  61. S. Ogata, Y. Shibagaki, Y. Maekawa, Y. Sonoi, Z. Kawasaki, M. Teshiba, H. Hashiguchi and S. Fukao : Radar observations of wintertime thunder clouds related to the location and height of lightning discharges, 14th International Union of Geodesy and Geophysics General Assembly, Vol.A, p.391, Sapporo, Japan (July 2003).
  62. Y. Maekawa, T. Fujiwara, Y. Shibagaki, T. Sato, M. Yamamoto, H. Hashiguchi, and S. Fukao : Rain Attenuation Statistics in Japan and Indonesia simultaneously observed on the satellite links to equatorial atmospheric radar, URSI Commission F Triennium Open Symposium, submitted, Cairns, Australia (June 2004).
  63. Y. Maekawa, T. Fujiwara, Y. Shibagaki, T. Sato, M. Yamamoto, H. Hashiguchi, and S. Fukao : First year results on rain attenuation characteristics of satellite links at equatorial atmospheric radar, 2004 IEEE AP-S/URSI Symposium, Accepted for presentation, Monterey, California USA (June 2004).
  64. T. Fujiwara, Y. Maekawa, Y. Shibagaki, T. Sato, M. Yamamoto, H. Hashiguchi, and S. Fukao : Cumulative time percentages of rainfall rate of rain attenuation observed on the satellite links at equatorial atmospheric radar, 2004 International Symposium on Antennas and Propagation, accepted for presentation, Sendai, Japan (Aug. 2004).
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