Hammar, A. and Emrich, A. and McCarthy, Darragh and Murphy, J.Anthony and Trappe, Neil and Stake, J. (2015) Optical Designs for a Multi-Beam 340 and 625/640 GHz Spaceborne Climate Research Instrument. In: 26th International Symposium on Space Terahertz Technology (ISSTT 2015). International Symposium on Space Terahertz Technology (ISSTT). ISBN 9781510809338

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Abstract

We report on an ongoing study where different optical configurations for a multi-beam limb-viewing (four to eight receiver channels at 340 and two channels at 625 GHz) spaceborne instrument for climate research are presented and compared. The optical configurations are analyzed in terms of optical performance (gain, side lobe levels, beam efficiency etc.), weight and size of the overall instrument envelope. Using ideal fundamental Gaussian beam modes and numerical tools relying on ray-tracing and physical optics methods, the different configurations are designed and evaluated. Preliminary results indicate that a 1.3 m x 0.65 m primary reflector can be used in a configuration that includes a relay optics system having two to four elements. In addition to the limb-viewing instrument, there will be an additional instrument operating at 640 GHz for observing clouds in nadir mode.

Item Type:	Book Section
Keywords:	Optical Designs; Multi-Beam; 340; 625/640 GHz; Spaceborne Climate Research Instrument;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	9840
Depositing User:	Dr. Neil Trappe
Date Deposited:	28 Aug 2018 14:43
Publisher:	International Symposium on Space Terahertz Technology (ISSTT)
Refereed:	Yes
URI:
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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