Three Band Cloud and Precipitation Radar

Metadata Updated: November 5, 2019

We propose to design and demonstrate key enabling technologies for Cloud and Precipitation radars capable of closing the observational gaps left by current and upcoming missions (i.e., TRMM, CloudSat, GPM and EarthCARE), and identified by the cloud-precipitation science community as essential for the advancement of global characterization of the cloud-precipitation processes and their correct modeling in weather and climate models. The proposed instrument is Three-band (Ku/Ka/W-band) Cloud and Precipitation Radar (3CPR). 3CPR enables the simultaneous three-band observation, Doppler measurement, cross-track electronic scanning, and polarimetry). 3CPR achieves this using an extremely versatile and efficient antenna system referred to as ACPRA (Advanced Cloud and Precipitation Radar Antenna). ACPRA combines the high gain of a large parabolic-cylindrical reflector with the beam agility of an electronically-scanned feed system. The 3CPR configuration fulfills the draft requirements of a Global Cloud and Pre-cipitation Mission (GPCM). The Ka-/W-band subset of the 3CPR design satisfies all of the requirements and most of the goals of the Aerosol/Cloud/Ecosystems (ACE) mission. It would also meet the requirements set by the snowfall measurement community. The key enabling technology meeting the requirements of GPCM and ACE is the W-band ACPRA. Using recent technological advancements in microfabricated interconnects and radiators, GaN and SiGe MMICs together with innovations in feed array design, we will demonstrate a W-band electronically-scanned array-fed reflector system. The reflector will be a scaled version of the 3CPR antenna with W-band scanning electronics. We will demonstrate this technology in thermal vacuum and vibration environments, advancing the key technology from TRL3 to TRL5. This TRL advancement along with a comprehensive instrument design and accommodation study to be performed during this task will bring the 3CPR instrument to TRL5, ready for Phase A start for ACE, GPCM, or other mission concepts by 2017.Develop and demonstrate key enabling technologies for a spaceborne three-band (Ku/Ka/W-band) 3CPR capable of simultaneous three-frequency, Doppler, cross-track scanning, and polarimetric measurements of hydrometeors (clouds, rainfall, snowfall). 3CPR will: - enable global characterization of cloud-precipitation processes and their correct representation in weather and climate models - fulfill all radar requirements for the ACE measurement concept, the anticipated radar requirements in the post-GPM mission era, and those set by snowfall science community. Special emphasis will be placed on developing 3CPR's electronic scanning antenna – the Advanced Cloud and Precipitation Radar Antenna (ACPRA).

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date November 5, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date November 5, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_15097
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 61269f70-cefd-4657-b7ab-8eeefa62957b
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2017-03-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 110973340171219df9d78daef01003d7e9fc6d64
Source Schema Version 1.1

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