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Journal Article (64)

61.
Journal Article
Kildal, P.-S.; Baker, L. A.; Hagfors, T.: The Arecibo upgrading: Electrical design and expected performance of the dual-reflector feed system. Proc. IEEE 82, pp. 714 - 724 (1994)
62.
Journal Article
Mishin, E.; Hagfors, T.: On heat flow contribution to plasma line frequency in the F region. Journal Geophysical Research 99 (A4), pp. 6537 - 6539 (1994)
63.
Journal Article
Isham, B.; Hagfors, T.: Observations of the temporal and spatial development of induced and natural plasma lines during HF modification experiments at Arecibo using chirped incoherent scatter radar. Journal Geophysical Research 98 (A8), pp. 13605 - 13625 (1993)
64.
Journal Article
Kildal, P. S.; Johansson, M.; Hagfors, T.; Giovanelli, R.: Analysis of a cluster feed for the Arecibo tri-reflector system using forward ray-tracing and aperture integration. IEEE Antennas and Propagation Magazine 41 (8), pp. 1019 - 1025 (1993)

Book Chapter (3)

65.
Book Chapter
Hagfors, T.; Schlegel, K.: Earth's ionosphere. In: The Century of Space Science, pp. 1559 - 1584 (Eds. Bleeker, J. A. M.; Geiss, J.; Huber, M. C. E.). Kluwer Academic Publ., Dordrecht (2001)
66.
Book Chapter
Hagfors, T.; Schlegel, K.: Earth's Ionosphere. In: The Century of Space Science (Eds. Bleeker, J. A. M.; Geiss, J.; Huber, M. C. E.). Kluwer Academic Publishers, Dordrecht, Netherlands (2001)
67.
Book Chapter
Hagfors, T.: Plasma fluctuations excited by charged particle motion and their detection by weak scattering of radio waves. In: Tech. Rpt. 97/53 on Incoherent Scatter: Theory, Practice and Science (collection of lectures given in Cargese, Corsica, 1995), pp. 1 - 32 (Ed. Alcaydé, D.). EISCAT Scientific Association, Kiruna, Sweden (1997)

Conference Paper (7)

68.
Conference Paper
Grill, M.; Honary, F.; Nielsen, E.; Hagfors, T.; Dekoulis, G.; Chapman, P.; Yamagishi, H.: A new imaging riometer based on mills cross technique. In: International Symposium on Communications Theory and Applications, 13 - 18 July 2003, pp. 26 - 31. HW communications Ltd (2003)
69.
Conference Paper
Hagfors, T.: Ground penetrating radar for planetary exploration. In: Remote Sensing Methodology for Earth Observation and Planetary Exploration, pp. 147 - 156 (Eds. Attema, E.; Schwehm, G.; Wilson, A.). ESA Publ. Div., Noordwijk (1998)
70.
Conference Paper
Kosch, M. J.; Hagfors, T.; Kohsiek, A.: Thermosphärische und mesosphärische neutrale Wind- und Temperaturmessungen mittels Fabry-Perot-Interferometer im Zusammenhang mit EISCAT. In: Kleinheubacher Berichte (1997), pp. 151 - 154. (1998)
71.
Conference Paper
Kosch, M. J.; Hagfors, T.; Kohsiek, A.; Rees, D.: The MPAE Fabry-Perot interferometer for neutral atmosphere and ionosphere interaction studies with EISCAT. In: XXIII General Assembly European Geophysical Society, Nice, France, 20-24 April. (1998)
72.
Conference Paper
Kosch, M. J.; Honary, F.; Stamatiou, N.; del Pozo, C.; Hagfors, T.: The morphology of auroral optical emissions, riometer absorption and energy of the precipitating particles. In: Proc. 25th Annual European Meeting on Atmospheric Studies by Optical Methods, Granada, Spain, 21-25 September 1998, pp. 50 - 53 (Eds. López-González, M. J.; López-Moreno, J. J.; López-Puertas, M.; López-Valverde, M. A.; Molina, A. et al.). Instituto de Astrofisico de Andalucia, Granada, Spain (1998)
73.
Conference Paper
Axford, W. I.; Hagfors, T.: 50 years of ionospheric research at the Max-Planck-Institut für Aeronomie. In: Modern Ionospheric Science, pp. 1 - 3 (Eds. Kohl, H.; Rüster, R.; Schlegel, K.). European Geophysical Society, Katlenburg-Lindau (1996)
74.
Conference Paper
Hagfors, T.: Neue Techniken der Astrophysik-Problemorientierte Planung-Entwicklung-Fachübergreifende Anwendung. In: Forschungsmanagement in der Physik (XIX), pp. 21 - 31. DPG, Bad Honnef (1995)

Report (6)

75.
Report
Kosch, M. J.; Kohsiek, A.; Schlegel, K.; Hagfors, T.: A new Fabry-Perot interferometer experiment for neutral atmosphere studies in conjunction with the EISCAT incoherent-backscatter radar system. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1997)
76.
Report
Kosch, M. J.; Hagfors, T.; Nielsen, E.: A new Digital All Sky Imager (DASI) experiment for optical auroral studies in conjunction with the STARE coherent radar system. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1996)
77.
Report
Nielsen, E.; Hagfors, T.: Spacecraft radar experiment for observations of the interior of a comet in the ROSETTA mission. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)
78.
Report
Nielsen, E.; Hagfors, T.; Kopka, H.; Trilling, D.: Thoughts on radio wave experiments for observations of the interior of comets in the international ROSETTA mission. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1995)
79.
Report
Culhane, J. L.; Hagfors, T.; Reid, G. C.; Southwood, D.; (eds.), E. T.-H.: Space Science Research in Norway - a Critial Evaluation. The Research Council of Norway, Oslo (1994)
80.
Report
Nielsen, E.; Axford, W. I.; Hagfors, T.; Kopka, H.; Armand, N. A.; Andrianov, V. A.; Shtern, D. J.; Breus, T.: The ``Long wavelength radar'' on the Mars-94 orbiter. Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Germany (1994)
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