VENµS in orbit radiometric calibration

Philippe Gamet; Arthur Dick; Sébastien Marcq; Olivier Hagolle; Jean-Louis Raynaud; Emmanuel Hillairet; Silvia Juglea; Jean-Pascal Burochin

doi:10.1117/12.2324118

25 September 2018 VENμS in orbit radiometric calibration

Philippe Gamet, Arthur Dick, Sébastien Marcq, Olivier Hagolle, Jean-Louis Raynaud, Emmanuel Hillairet, Silvia Juglea, Jean-Pascal Burochin

Author Affiliations +

Proceedings Volume 10785, Sensors, Systems, and Next-Generation Satellites XXII; 1078513 (2018) https://doi.org/10.1117/12.2324118
Event: SPIE Remote Sensing, 2018, Berlin, Germany

Abstract

For Venµs satellite, launched August 2 nd, 2017, the calibration and performance assessment activities of the commissioning phase took place in the second semester of 2017. In particular, the radiometric calibration includes fine tuning of the dynamic, identification of defective pixels, equalization of the detectors, absolute calibration, viewing parameters tuning. A special focus is made on specificities of the mission concerning level-1 radiometric calibration. As far as equalization is concerned: an unusual behavior has been observed on numerous pixels, called “radiometric spikes”, on Venµs images. An improvement of the Venµs radiometric model has been implemented to remove these spikes. Absolute calibration using the moon consists in comparing the global irradiance of the Venµs moon image with the reference from ROLO radiometric model. Absolute calibration using simultaneous nadir observations with Sentinel-2 is also a specificity of the mission: since Sentinel-2A and Sentinel-2B are currently in orbit with very similar spectral bands, it is possible to use Simultaneous Nadir Observations of Venµs and Sentinel-2. The cross-calibration results will be presented and compared to other vicarious calibration methods. About stray-light modelling and correction: the optical stray-light level exceeds the requirements by far. Two types of stray-light are observed: local ghost and cross-talk ghost. Local stray-light model is computed as a global system MTF, whereas the estimated cross-talk contribution is subtracted from the image. The specific correction model and the in-flight results will be presented.

Citation Download Citation

Philippe Gamet, Arthur Dick, Sébastien Marcq, Olivier Hagolle, Jean-Louis Raynaud, Emmanuel Hillairet, Silvia Juglea, and Jean-Pascal Burochin "VENμS in orbit radiometric calibration", Proc. SPIE 10785, Sensors, Systems, and Next-Generation Satellites XXII, 1078513 (25 September 2018); https://doi.org/10.1117/12.2324118

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
19 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Calibration

Clouds

Signal to noise ratio

Sensors

Venus

Detection and tracking algorithms

Image processing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years