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Proceedings Paper

Dual-frequency precipitation radar (DPR) development on the global precipitation measurement (GPM) core observatory
Author(s): M. Kojima; T. Miura; K. Furukawa; Y. Hyakusoku; T. Ishikiri; H. Kai; T. Iguchi; H. Hanado; K. Nakagawa
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Paper Abstract

The Dual-frequency Precipitation Radar (DPR) on the Global Precipitation Measurement (GPM) core observatory is developed by Japan Aerospace Exploration Agency (JAXA) and National Institute of Information and Communications Technology (NICT). GPM objective is to observe global precipitation more frequently and accurately. GPM contributes to climate and water cycle change studies, flood prediction and numerical weather forecast. GPM consists of GPM core observatory and constellation satellites carrying microwave radiometers (MWRs) and/or sounders (MWSs). The frequent measurement will be achieved by constellation satellites, and the accurate measurement will be achieved by DPR with high sensitivity and dual frequency capability. GPM core observatory is jointly developed by National Aeronautics and Space Administration (NASA) and JAXA. NASA is developing the satellite bus and GPM microwave radiometer (GMI), and JAXA is developing DPR. GPM algorithms for data processing are developed jointly. The DPR consists of Ku-band (13.6 GHz) radar suitable for heavy rainfall in the tropical region, and Ka-band (35.55 GHz) radar suitable for light rainfall in higher latitude region. Drop size distribution information will be derived which contributes to the improvement of rainfall estimate accuracy. DPR will also play a key role to improve rainfall estimation accuracy of constellation satellites. DPR proto-flight test at JAXA Tsukuba space center is finished and it is delivered to NASA for integration to the GPM observatory. In this paper, DPR PFT test result at Tsukuba space center, DPR status in the GPM observatory environmental test, and DPR on-orbit calibration plan will be presented.

Paper Details

Date Published: 9 November 2012
PDF: 10 pages
Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II, 85281A (9 November 2012); doi: 10.1117/12.976823
Show Author Affiliations
M. Kojima, Japan Aerospace Exploration Agency (Japan)
T. Miura, Japan Aerospace Exploration Agency (Japan)
K. Furukawa, Japan Aerospace Exploration Agency (Japan)
Y. Hyakusoku, Japan Aerospace Exploration Agency (Japan)
T. Ishikiri, Japan Aerospace Exploration Agency (Japan)
H. Kai, Japan Aerospace Exploration Agency (Japan)
T. Iguchi, National Institute of Information and Communications Technology (Japan)
H. Hanado, National Institute of Information and Communications Technology (Japan)
K. Nakagawa, National Institute of Information and Communications Technology (Japan)


Published in SPIE Proceedings Vol. 8528:
Earth Observing Missions and Sensors: Development, Implementation, and Characterization II
Haruhisa Shimoda; Xiaoxiong Xiong; Changyong Cao; Xingfa Gu; Choen Kim; A. S. Kiran Kumar, Editor(s)

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