Geometric Calibration Using Stellar Sources in Earth Observation Satellite

Satellite earth observation in operational oceanography

The role and contribution of satellite data in operational oceanography is reviewed, with emphasis on northern European seas. The possibility to observe various ocean parameters and processes by existing satellite sensors, such as optical instruments, infrared radiometers, passive Ž . microwave radiometers, and active microwave systems altimeter, scatterometer, SAR is discussed. The basic param...

Detecting Phytoplankton Size Class Using Satellite Earth Observation

Modeling Earth Observation Satellite Data Semantically

This paper presents preliminary research results on using semantic technologies to model Earth observation satellite data. The research goal is to enhance the data search functionalities that satellite data catalogues provide to researchers and practitioners. An ontology that captures characteristics of satellite data is introduced. How to utilize this ontology in assisting data search and how ...

Geometric calibration of ERS satellite SAR images

Geometric calibration of the European Remote Sensing (ERS) Satellite synthetic aperture radar (SAR) slant range images is important in relation to mapping areas without ground reference points and also in relation to automated processing. The relevant SAR system parameters are discussed and calibrated by using the European Space Agency (ESA) transponders at Flevoland. The resulting accuracy of ...

Reference Spectrometry for Calibration of Optical Earth Observation Systems

A small palm-sized, reference spectrometer, mounted on a remote controlled model helicopter is being developed and tested to provide calibrated reference data for optical Earth Observation systems by the National Physical Laboratory (NPL) in conjunction with City University in London. The spectrometer is traceable to NPL’s primary standard cryogenic radiometer. The traceability chain includes t...