Heidelberg 2015 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 13: Postersession Bodenkunde, Kryosphäre, Meßtechnik, Ozeanographie

UP 13.3: Poster

Donnerstag, 26. März 2015, 10:45–19:45, G/Foyer

Development of the Inertial Sensor-based Attitude compensating MAX-DOAS instrument — •Lara Penth, Denis Pöhler, Johannes Lampel, and Ulrich Platt — Institute of Environmental Physics, University of Heidelberg, Germany

Multi-AXis DOAS (MAX-DOAS) is a well established remote sensing technique for atmospheric trace gas observations. The spectral analysis of scattered solar radiation measured at different elevation angles allows to derive the vertical distribution of atmospheric trace gases as well as aerosol properties. Measurements of tropospheric constituents require a high precision of the elevation angle, which is especially challenging on moving platforms. The new Inertial Sensor-based Attitude compensating (ISA) MAX-DOAS instrument contains an automatic attitude and motion compensation of the elevation angle in real-time using latest MEMS sensors. Thus no manual adjustment on the measurement site is required and it could be demonstrated that the applied Kalman algorithms for moving platforms can maintain a precise attitude estimation of the instrument of about σ = 0.12^∘, even under highly dynamic operation conditions. The ISA MAX-DOAS instrument and measurement applications will be presented.