Geolocation Assessment of 300 M Resolution Meris Globcover Ortho- Rectified Products
نویسندگان
چکیده
The GLOBCOVER project delivers a global land cover map at 300 m spatial resolution using MERIS FRS data acquired during the 19 months period from December 2004 until June 2006. As multiple single orbits has to be combined in one single dataset. Therefore, we need to assess the relative and absolute geolocation of MERIS projected products. We describe hereafter the main steps of the ortho-rectification preprocessing chain as well as the validation methodology and database selection. Results are very satisfactory with an absolute geo-location error of 77 meters and a relative geo-location error of 51 meters.
منابع مشابه
Globcover - a Global Land Cover Service with Meris
The Globcover initiative comprises the development and demonstration of a service that in first instance produces a Global land cover map for year 2005/2006. Globcover uses MERIS fine resolution (300m) mode data acquired between mid 2005 and mid 2006 and, for maximum user benefit, the thematic legend is compatible with the UN Land Cover Classification System (LCCS). This new product updates and...
متن کاملGeometric Quality Assessment of Vhr Satellite Imagery with Ortho-rectified Cartosat-1 Data – a Case Study
Data products from satellite instruments with moderate to high spatial resolution are assessed for their geometric accuracy with the help of topographic maps or geo-coded satellite imagery generally at 1:50,000 scale. With advancement in high precision attitude and orbital control systems onboard, considerable attention has been paid in the recent past to improve methods for better accurate ass...
متن کاملThe Globcover Initiative
The Globcover initiative comprises the development and demonstration of a service that in first instance produces a Global land cover map for year 2005/2006. Globcover uses MERIS fine resolution (300m) mode data acquired between mid 2005 and mid 2006 and, for maximum user benefit, the thematic legend is compatible with the UN Land Cover Classification System (LCCS). This new product updates and...
متن کاملAssessment of Coarse-Resolution Land Cover Products Using CASI Hyperspectral Data in an Arid Zone in Northwestern China
The accuracy of different coarse-resolution land cover products is an important consideration for product users at the regional or global scale, and different evaluation methods inevitably result in discrepancies in accuracy for the same land cover product. The remote sensing community has responded to this increased interest by improving methodologies for more accurately evaluating the correct...
متن کاملUncertainty estimates for the FAPAR operational products derived from MERIS — Impact of top-of-atmosphere radiance uncertainties and validation with field data
This paper discusses the accuracy of the operational Medium Resolution Imaging Spectrometer (MERIS) Level 2 land product which corresponds to the Fraction of Absorbed Photosynthetically Active Radiation (FAPAR). The FAPAR value is estimated from daily MERIS spectral measurements acquired at the top-of-atmosphere, using a physically based approach. The products are operationally available at the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008