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Proceedings Paper

Balloon-borne heterodyne stratospheric limb sounder TELIS ready for flight
Author(s): R. W. M. Hoogeveen; P. A. Yagoubov; G. de Lange; A. de Lange; V. P. Koshelets; B. N. Ellison; M. Birk
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Paper Abstract

TELIS (TErahertz and submm LImb Sounder) is a three-channel balloon-borne heterodyne spectrometer for atmospheric research. The observational techniques of TELIS can be compared to the presently flying MLS instrument on board NASA's EOS-Aura satellite, but TELIS is built with a new generation of cryogenic heterodyne detectors and novel compact systems suitable for integration into the confined space of a balloon borne cryostat. TELIS will fly on the MIPAS-B2 gondola. The two instruments together will yield the most complete set of stratospheric constituents, measured so far. TELIS is a cooperation between the European institutes DLR (PI-institute), RAL and SRON. First flight foreseen in the spring of 2008 from Teresina, Brasil. The three TELIS receivers provide simultaneous vertical profile measurement of a range of molecules. The 500 GHz channel is developed by RAL and will produce vertical profiles of BrO, ClO, O3 and N2O. The 1.8 THz channel is developed by DLR and will mainly target the OH radical, and will also measure HO2, HCl, NO, NO2, O3, H2O, O2 and HOCl. Finally the 480 - 650 GHz channel is developed by SRON and IREE and will measure profiles of ClO, BrO, O3, HCl, HOCl, H2O and its 3 isotopomers, H2O2, NO, N2O, HNO3, CH3Cl and HCN. In this paper, the science and technology of TELIS will be discussed with emphasis on the channel developed by SRON. It contains a Superconducting Integrated Receiver (SIR), which combines on a 4x4 mm2 chip the low-noise SIS mixer and its quasioptical antenna, a superconducting phase-locked Flux Flow Oscillator (FFO) acting as Local Oscillator (LO) and a SIS harmonic mixer (HM) for FFO phase locking. The latest results from the pre-flight test and integration campaigns will be presented.

Paper Details

Date Published: 17 October 2007
PDF: 10 pages
Proc. SPIE 6744, Sensors, Systems, and Next-Generation Satellites XI, 67441U (17 October 2007); doi: 10.1117/12.737778
Show Author Affiliations
R. W. M. Hoogeveen, SRON Nationaal Instituut voor Ruimteonderzoek (Netherlands)
P. A. Yagoubov, SRON Nationaal Instituut voor Ruimteonderzoek (Netherlands)
G. de Lange, SRON Nationaal Instituut voor Ruimteonderzoek (Netherlands)
A. de Lange, SRON Nationaal Instituut voor Ruimteonderzoek (Netherlands)
V. P. Koshelets, Institute of Radio Engineering and Electronics (Russia)
B. N. Ellison, Rutherford Appleton Lab. (United Kingdom)
M. Birk, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)

Published in SPIE Proceedings Vol. 6744:
Sensors, Systems, and Next-Generation Satellites XI
Shahid Habib; Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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