POSTER SESSION 2
10:30–12:30, Tuesday, September 15
Poster Session | 1 | 2 | 3 | 4 | Schedule at a Glance
ABSTRACT 1226 | POSTER 18
PANTHYR IN HYPERNETS – AN ANALYSIS OF RADIOMETER SENSOR CALIBRATION AND CHARACTERISATION
A network (HYPERNETS; www.hypernets.eu) of automated hyperspectral radiometers has been set up to provide water reflectance measurements in the visible and near-infrared bands for the purpose of multi-mission satellite validation and water quality monitoring. The PANTHYR (PAN-and-Tilt HYperspectral Radiometer), one of two autonomous systems in the project, consists of two TriOS RAMSES hyperspectral radiometers (one radiance and one irradiance) making measurements over a range of azimuth and zenith angles using a sun-tracking instrument pointing package. Data is transmitted to shore daily, then processed and web-distributed in near-real time for integration in satellite mission validation analyses.
In order to ensure the quality of this data, the TriOS sensors at field sites are replaced annually and calibrated for radiometric accuracy at Tartu Observatory, University of Tartu (Estonia). Additionally, instrument responses are characterised for elements such as temperature and cosine effects. This work will investigate changes in these radiometric calibrations and characterisations over time, to determine whether in-situ data is adversely affected by factors such as instrument drift or environmental degradation of the sensor. It will also investigate differences in pre- and post-deployment calibration values, which provide information on intra-mission environmental influences on sensor accuracy.
This information will be presented in the context of the system’s (and network’s) relevance to both current and future satellite missions for the purpose of radiometric data validation.
Matthew Beck, Royal Belgian Institute of Natural Sciences, [email protected], https://orcid.org/0000-0003-2847-8826
Kevin Ruddick, Royal Belgian Institute of Natural Sciences, [email protected]
Riho Vendt, Tartu Observatory, University of Tartu, [email protected]
Dieter Vansteenwegen, Vlaams Instituut voor de Zee, [email protected]
Francesca Ortenzio, Royal Belgian Institute of Natural Sciences, [email protected]
Quinten Vanhellemont, Royal Belgian Institute of Natural Sciences, [email protected]
Poster Session | 1 | 2 | 3 | 4 | Schedule at a Glance
