On Dec. 2, 2012, a Soyuz rocket catapulted the PlÃ©iades 1B very-high-resolution optical satellite into orbit, where it has joined its twin PlÃ©iades 1A satellite.
The satellite will be phased 180 degrees with PlÃ©iades 1A on the same orbit to form a true constellation that offers daily revisits to any point on the globe. Built by Astrium for the French space agency CNES, the PlÃ©iades constellation offers 50-cm Earth imagery with an imaging swath of 20 km, the widest in its category.
The ability to generate imagery anywhere in the world every day is vital for quick-response applications. The PlÃ©iades constellation will be able to view conflict and crisis zones or natural disaster areas within hours of an event to help plan relief and rescue operations.
Daily revisits also allow close monitoring of civil engineering projects, mining activities and industrial or military operations. The ability to collect twice as much imagery greatly increases the chances of obtaining cloud-free imagery over a given area, making the PlÃ©iades satellites ideal for mapping large areas at high resolution.
Image courtesy of Astrium.