Earth observation satellite Worldview-4 with a resolution of 30 cm launched

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After a long delay Worldview-4 has been launched.* This means that now the DigitalGlobe constellation of satellites can photograph any spot on Earth more than 4 times per day at a resolution of 30 cm (panchromatic) or 120 cm (multi-spectral which include near infrared) and with a locational accuracy of 3 meters.* Worldview-4's orbit is 617 km above the Earth.* It has an average revisit time of less than a day and can capture 680,000 square km, which is 70 terabytes of imagery per day.* (The Earth's surface area is 510 million square kilometers.)

This augments the16 years or 80 petabytes of Earth-observation imagery that DigitalGlobe holds in its library.*

Digital Globe has put all of the data on the public cloud (Amazon) and has provided a platform that supports efficient search, processing and workflows. GBDX is an online environment for efficiently running advanced algorithms for information extraction from imagery datasets at scale.* It is a set of RESTful APIs, and algorithms that have already been implemented by Digital Globe or its partners include car counting, orthorectification, land use, land cover, and atmospheric compensation.* One of the most important efficiencies of the GBDX architecture is that it avoids having to move huge volumes of data over the internet.* It does this by bringing the application to the data, rather than the data to the application.*




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