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Development and Characterization of the balloon borne instrument, TErahertz and submm LImb Sounder (TELIS)

Suttiwong, Nopporn (2005) Development and Characterization of the balloon borne instrument, TErahertz and submm LImb Sounder (TELIS). Ocean, Ice, Atmosphere Seminar, 2005-11-22, Bremen. (Unpublished)

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Abstract

In order to understand the ozone destruction, TELIS (TErahertz and sum Limb Sounder) has been developing by utilizing a new state-of-the-art balloon borne with three channel (500, 625, 1800 GHz for RAL, SRON and DLR consecutively) cryogenic heterodyne spectrometer. The state-of-the-art super-conducting heterodyne technology and is designed to be compact and lightweight, while providing broad spectral coverage within the submillimeter and far-infrared spectral range, high spectral resolution and long flight duration (~24 hours duration during a single flight campaign). Measurements with the 1.8 THz receiver will focus on the OH specie at 1.8 THz +/-40GHz. The weaker emission at 1.8 THz is partly compensated by the higher sensitivity of the HEB mixer. The cryogenic receiver will utilize 2 Martin-Puplett interferometers as single-side-band filter and diplexer, a solid state local oszillator and a hot electron bolometer (HEB) as mixer. Recently, a simplified setup of the cryogenic heterodyne receiver in double-side-band (DSB) mode using a far-infrared laser source as LO was successfully tested within the frame of the PhD thesis of Ulrich Mair. Within the present PhD thesis the complete 1.8 THz channel will be finalised and characterised. The backend equipped with an autocorrelator spectrometer will also be characterised. Then the integration in the flight module and the radiometric characterisation of the entire instrument follows. Finally, data from the first flight will be analysed.

Document Type:Conference or Workshop Item (Speech)
Title:Development and Characterization of the balloon borne instrument, TErahertz and submm LImb Sounder (TELIS)
Authors:
AuthorsInstitution or Email of Authors
Suttiwong, NoppornUNSPECIFIED
Date:22 November 2005
Status:Unpublished
Keywords:Terahertz, Limb Sounder, TELIS, Heterodyne, OH
Event Title:Ocean, Ice, Atmosphere Seminar
Event Location:Bremen
Event Type:Other
Event Dates:2005-11-22
Organizer:IUP Bremen, Universität Bremen
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Projekt TELIS (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Experimental Methods
Deposited By: Nopporn Suttiwong
Deposited On:05 Dec 2005
Last Modified:27 Apr 2009 04:44

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