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Tropical Rainfall Measuring Mission (TRMM) project. VI - Spacecraft, scientific instruments, and launching rocket. Part 4 - TRMM rain radarThe basic system parameters for the Tropical Rainfall Measuring Mission (TRMM) radar system are frequency, beamwidth, scan angle, resolution, number of independent samples, pulse repetition frequency, data rate, and so on. These parameters were chosen to satisfy NASA's mission requirements. Six candidates for the TRMM rain radar were studied. The study considered three major competitive items: (1) a pulse-compression radar vs. a conventional radar; (2) an active-array radar with a solid state power amplifier vs. a passive-array radar with a traveling-wave-tube amplifier; and (3) antenna types (planar-array antenna vs. cylindrical parabolic antenna). Basic system parameters such as radar sensitivities, power consumption, weight, and size of these six types are described. Trade-off studies of these cases show that the non-pulse-compression active-array radar with a planar array is considered to be the most suitable candidate for the TRMM rain radar at 13.8 GHz.
Document ID
19920044221
Document Type
Reprint (Version printed in journal)
Authors
Meneghini, Robert
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Atlas, David
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Awaka, Jun
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Okamoto, Ken'ichi
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ihara, Toshio
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Nakamura, Kenji
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kozu, Toshiaki
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Manabe, Takeshi
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
June 1, 1990
Publication Information
Publication: Communications Research Laboratory, Review
Volume: 36
Issue: 11, J
ISSN: 0914-9279
Subject Category
Spacecraft Instrumentation
Accession Number
92A26845
Distribution Limits
Public
Copyright
Other

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