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Proceedings Paper

EarthCARE/CPR design and verification status
Author(s): K. Okada; T. Kimura; H. Nakatsuka; Y. Seki; G. Kadosaki; J. Yamaguchi; N. Takahashi; Y. Ohno; H. Horie; K. Sato
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Paper Abstract

The Earth, Clouds, Aerosols and Radiation Explorer (EarthCARE) mission is joint mission between Europe and Japan for the launch year of 2015. Mission objective is to improve scientific understanding of cloud-aerosol-radiation interactions that is one of the biggest uncertain factors for numerical climate and weather predictions. The EarthCARE spacecraft equips four instruments such as an ultra violet lidar (ATLID), a cloud profiling radar (CPR), a broadband radiometer (BBR), and a multi-spectral imager (MSI) to observe aerosols, clouds and their interactions simultaneously from the orbit. Japan aerospace exploration agency (JAXA) is responsible for development of the CPR that will be the first space-borne W-band Doppler radar. The CPR is defined with minimum radar sensitivity of -35dBz, radiometric accuracy of 2.7 dB, and Doppler velocity measurement accuracy of 1m/s. These specifications require highly accurate pointing technique in orbit and high power source with large antenna dish. JAXA and National Institute of Information and Communications Technology (NICT) have been jointly developed this CPR to meet these requirements. In addition, new ground calibration technique is also being progressed for the launch of EarthCARE/CPR. This evaluation method will also be the first use for spacecraft as well as Doppler cloud radar. This paper shows the summary of the CPR design and verification status, and activity status of development of ground calibration method with a few results of experiment using current space-borne cloud radar (CloudSat, NASA).

Paper Details

Date Published: 19 November 2012
PDF: 6 pages
Proc. SPIE 8533, Sensors, Systems, and Next-Generation Satellites XVI, 85330D (19 November 2012); doi: 10.1117/12.974479
Show Author Affiliations
K. Okada, Japan Aerospace Exploration Agency (Japan)
T. Kimura, Japan Aerospace Exploration Agency (Japan)
H. Nakatsuka, Japan Aerospace Exploration Agency (Japan)
Y. Seki, Japan Aerospace Exploration Agency (Japan)
G. Kadosaki, Japan Aerospace Exploration Agency (Japan)
J. Yamaguchi, Japan Aerospace Exploration Agency (Japan)
N. Takahashi, National Institute of Information and Communications Technology (Japan)
Y. Ohno, National Institute of Information and Communications Technology (Japan)
H. Horie, National Institute of Information and Communications Technology (Japan)
K. Sato, National Institute of Information and Communications Technology (Japan)


Published in SPIE Proceedings Vol. 8533:
Sensors, Systems, and Next-Generation Satellites XVI
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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