Articles for "Earth Observation"

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Space | 22. July 2012

Live stream of the IGARSS 2012 opening in Munich

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Welcome to Munich! The International Congress Center in Munich was buzzing today, and we expect even more activity in the coming days. You can find out about the events taking place via this blog and our various social media channels. The opening of the Symposium will be broadcast live by DLR and ESA; it will be streamed live from here tomorrow, Monday 23 July, between 09:00 and 12:30. This year’s theme is ‘Remote Sensing for a Dynamic Earth’. read more

Space | 12. July 2012 | posted by Andrea Haag

Observing Earth from space - IGARSS 2012

IGARSS 2012

The countdown to the International Geoscience and Remote Sensing Symposium IGARSS 2012, has begun - only 6 days remain. This year, IGARSS will be held at the International Congress Centre in Munich from 22-27 July, and with this blog, we will be reporting on all the breaking announcements and important events. We will do this with written entries, images and webcasts - in which specialists in Earth observation and remote sensing will join us. read more

Space | 01. March 2011

Where and how does ice move in the ocean?

TanDEM-X has now begun routine operations, and is working with TerraSAR-X in bistatic mode and recording data for its global digital terrain model. In this post, I look back at an earlier phase of the mission, when this satellite pair orbited the Earth separated by a mere three seconds or 20 kilometres, and each sensor acquired images independently. read more

Space | 19. October 2010

Baptism of fire for the satellite formation

Last Thursday, the two German radar satellites of the TanDEM-X formation finally reached their operational orbit configuration, with only a few hundred metres separating them. In this configuration, they act as a unique radar interferometer in space. The next day, on Friday evening, the instruments were switched on, after many careful checks, to acquire the world's first Digital Elevation Model (DEM) data using a free-flying bistatic Synthetic Aperture Radar (SAR) satellite formation. That same night, the jointly acquired data were received and processed by our operational processing chain. read more

Space | 27. August 2010

TerraSAR-X and TanDEM-X 'chatting' for the first time

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Even though the 'chit chat' between the satellites has so far consisted of no more than the exchange of synchronisation signals – "Hello, here I am!" – that is been all that was needed for the first simultaneous imagery to be captured by TerraSAR-X and TanDEM-X. Since 22 July 2010, TerraSAR-X has been flying ahead of TanDEM-X at a distance of just 20 kilometres, in a formation defined for test purposes and which also affords scope for a special series of radar experiments. They have now completed the first ever experiment with bistatic radar involving two satellites flying together in formation. read more

Space | 20. August 2010

The face of the Earth

For a month now, we have been acquiring altitude models with the TanDEM-X and TerraSAR-X satellite pair. Already, over 1000 products have come out of our operational processing chain. Alongside many test images, some of the data also give an insight into how humankind has shaped the surface of the Earth – and how the highs and lows around them have determined the course of their lives. read more

Space | 19. August 2010

Processing of first TanDEM-X data received at Inuvik

Erhard Diedrich, in charge of the building of the Inuvik satellite station, returned from Canada with his colleagues, a happy man. The inauguration on 10 August was not only moving, but also marked the end of a successful first checkout phase. Over 300 passes of data have been acquired since April this year, among them 60 from the TanDEM-X satellite. read more

Space | 06. August 2010

TanDEM-X answers its first call for crisis assistance

Satellite data is an indispensable tool for quickly assessment of the situation in cases of natural or environmental disasters and for guiding emergency teams on ground. DLR's 'Center for Satellite Based Crisis Information' (Zentrum für satellitengestützte Kriseninformation; ZKI) and many other international organizations have been using the German radar satellite TerraSAR-X for three years to rapidly obtain reliable data in all weather conditions for such crisis situations. Now, our new satellite, TanDEM-X, has also provided assistance for the first time in a crisis – gathering information on the flood catastrophe in Pakistan. We were able to help not only with radar images but we also used TanDEM-X for interferometry in formation with TerraSAR-X for the first time. This has provided a more reliable technique to map floods instantaneously and more accurately, in one pass and without the need for archived data. read more

Space | 02. August 2010

TanDEM-X ground segment kicks off!

Höhendatensatz: Vulkan Longonot in Kenia

The successful setup of the 'wide' flight formation between the TerraSAR-X and TanDEM-X satellites marked the beginning of the 'TerraSAR-X Add-On for Digital Elevation Measurements' mission in its literal sense: Now, with both satellites flying as a team – three seconds apart – and seeing the same region of the Earth's surface, tricky instrument commanding is no longer needed to acquire interferometric data sets. Ordering, planning and commanding of the synchronous acquisitions, as well as reception and, in particular, processing of the data sets from both satellites are performed completely automatically. read more

Space | 22. July 2010

The first 3D experiment

It was during a sleepless night, with hardly any drop in the midsummer temperatures, when the idea for a radar experiment with both satellites, TerraSAR-X and TanDEM-X occurred: “What if we could prove that interferometry is possible with two satellites even before the final formation is reached?” read more