Penina Axelrad
Langley Research Center
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Publication
Featured researches published by Penina Axelrad.
international geoscience and remote sensing symposium | 2000
Attila Komjathy; James Maslanik; Valery U. Zavorotny; Penina Axelrad; Stephen J. Katzberg
This paper describes a new research effort to extend the application of Global Positioning System (GPS) signal reflections, received by airborne instruments, to cryospheric remote sensing. Their experimental results indicate that reflected GPS signals have potential to provide information on the presence and condition of sea and fresh-water ice as well as the freeze/thaw state of frozen ground. They show results from aircraft experiments over the ice pack near Barrow, Alaska indicating correlation between forward-scattered GPS returns and RADARSAT backscattered measurements.
international geoscience and remote sensing symposium | 2000
Michael Armatys; Attila Komjathy; Penina Axelrad; Stephen J. Katzberg
Initial estimates of ocean surface wind speed and direction based on observations of reflected GPS signals are presented and compared to QuikSCAT wind fields. The two wind speed estimates are generally in agreement to within 2-3 m/s, and under favorable conditions of well developed seas and stable winds, direction estimates agree to within 10 deg. An overview of the GPS technique is presented as well as a presentation and discussion of these first results.
Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002) | 2002
Michael C. Moreau; Edward P. Davis; J. Russell Carpenter; David Kelbel; George W. Davis; Penina Axelrad
Proceedings of the 2000 National Technical Meeting of The Institute of Navigation | 2000
Michael Armatys; Dallas Masters; Attila Komjathy; Penina Axelrad; James L. Garrison
Proceedings of the 61st Annual Meeting of The Institute of Navigation (2005) | 2005
Eric Vinande; Dennis Akos; Dallas Masters; Penina Axelrad; Stephan Esterhuizen
Proceedings of the 57th Annual Meeting of The Institute of Navigation (2001) | 2001
James L. Garrison; Michael C. Moreau; Penina Axelrad
International Technical Meeting of the Satellite Division of the Institute of Navigation : 26/09/2006 - 29/09/2006 | 2006
Marcus Junered; Stephan Esterhuizen; Dennis Akos; Penina Axelrad
Archive | 2002
Penina Axelrad; Eden Speed; Jesse Leitner
Archive | 2001
Michael C. Moreau; Eden Speed; Penina Axelrad; Jesse Leitner
Archive | 2001
Attila Komjathy; Michael Armatys; David Masters; Penina Axelrad; Valery U. Zavorotny; Stephen J. Katzberg
