The OSMON study aims to develop, implement, deliver and demonstrate a platform-independent modular software tool for assessing and monitoring the geolocation accuracy of medium to high resolution optical sensors, expanding on proven technology and providing robust algorithms.
The tool will support Level-1 products from current medium resolution EUMETSAT sensors (such as AVHRR, SLSTR, OLCI) and should be easily extendable to near-future sensors like MetImage, etc.
Automatic and user-specified reporting and analysis tools for checking spatial and temporal agreement and identifying mismatches will be supplied
The main project objectives are
- Generating and delivering a stand-alone environment for assessing the geolocation accuracy of moderate to high resolution optical satellite sensors.
- Developing, testing and documenting an automatic monitoring and reporting system for detecting and quantifying possible geolocation errors.
- Providing tools for continuously monitoring geolocation performance of image data as they are acquired and circulated to users.
- Enabling quick and reliable validation of new datasets in case of a change in the processing baseline for optical sensor products that might affect the geolocation accuracy.
- Evaluating the spectral and temporal registration accuracy and stability of EUMETSAT optical sensor payloads by analysing long time series.
The Geolocation Assessment Tool has a modular design. It will consist of a Core Module and a Reporting Module.
The core module performs the calculation of the geolocation shifts between MROI and high-resolution reference data using features which are clearly identifiable in MROI data sets (such as lakes, islands).
The reporting module takes care of visualisation (Figure1), evaluation and analyses of geolocation shifts and generation of reports.
Figure 2 shows the concept of the processing line. Input to the procedure are Level1B (swath geometry) or Level-2 (geocoded) MROI data from METOP AVHRR/3, and Sentinel-3A/B SLSTR and OLCI. The module design allows to add other and upcoming MROI sensors like MetImage.
|WP2||State of the Art and Consolidation of Requirements|
|WP5||Demonstration of Operation and Evaluation|
|WP6||Evolution Plan and Project Outreach|
|Phase||Date and location|
|Mid-term Review||Sept 2019|
|Final presentation||May 2020|