640 GHz Heterodyne Polarimeter, Phase II

Metadata Updated: May 2, 2019

This proposal is responsive to NASA SBIR Subtopic S1.02: Microwave Technologies for Remote Sensing, specifically the interest in the development of a 640 GHz Heterodyne Polarimeter with I, Q, U Channels. Suitably compact, light-weight and power efficient heterodyne instruments are required to enable polarimetric measurements for microphysical parameterization of ice clouds applicable to NASA's planned Aerosol, Cloud and Ecosystems (ACE) mission. Through the Phase 1 effort, VDI demonstrated the feasibility of an integrated 640 GHz polarimetric receiver. This included the demonstration of a 670 GHz LNA module and an OMT, each being compatible with full integration with the mixer diode based down-convertor. Goals of the Phase II include optimization of the OMT, development and evaluation of a fully integrated 670 GHz polarimeter, development of evaluation procedures to ensure the polarimeter meets NASA requirements, and development of a second prototype at 325 GHz to demonstrate the scaling of the technology. The estimated specifications of the 670 GHz prototype include receiver noise temperature ~6,000K (SSB at the horn aperture), power requirement 6W, volume ~1.5 x 1.5 x 0.75. The goal isolation between polarizations is 20 – 25 dB. Both integrated polarimeters will be delivered to NASA GSFC. Through Phase III, VDI will ensure that the technology is extended throughout the frequency range of interest for NASA's atmospheric missions, roughly 100 GHz through about 1 THz.

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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 May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_93319
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
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Datagov Dedupe Retained 20190501230127
Harvest Object Id 7bc4acbe-61a0-489d-a4dc-43eddf098b2e
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2019-04-01
Homepage URL https://techport.nasa.gov/view/93319
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash d859f021b142399ccc97c4b7107dc04c09817bac
Source Schema Version 1.1

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