Balloon-borne heterodyne stratospheric limb sounder TELIS ready for flight

R. W. M. Hoogeveen; P. A. Yagoubov; G. de Lange; A. de Lange; V. P. Koshelets; B. N. Ellison; M. Birk

doi:10.1117/12.737778

17 October 2007 Balloon-borne heterodyne stratospheric limb sounder TELIS ready for flight

R. W. M. Hoogeveen, P. A. Yagoubov, G. de Lange, A. de Lange, V. P. Koshelets, B. N. Ellison, M. Birk

Proceedings Volume 6744, Sensors, Systems, and Next-Generation Satellites XI; 67441U (2007) https://doi.org/10.1117/12.737778
Event: SPIE Remote Sensing, 2007, Florence, Italy

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.

Citation Download Citation

R. W. M. Hoogeveen, P. A. Yagoubov, G. de Lange, A. de Lange, V. P. Koshelets, B. N. Ellison, and M. Birk "Balloon-borne heterodyne stratospheric limb sounder TELIS ready for flight", Proc. SPIE 6744, Sensors, Systems, and Next-Generation Satellites XI, 67441U (17 October 2007); https://doi.org/10.1117/12.737778

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