Energy | 13. September 2010 | posted by Jan Oliver Löfken | 2 Comments

Energy question of the week: What part does natural gas play in meeting Germany’s energy requirements?

Whether used for heating, as a vehicle fuel or for power generation in gigantic turbines, natural gas plays a central role in Germany’s national energy supply. With consumption at 100 billion cubic metres a year, its use – and also importation – has almost doubled since 1970; and this trend is still growing. But does such a development make sense? read more

Energy | 03. September 2010 | posted by Jan Oliver Löfken | 3 Comments

Energy question of the week: Which fuel offers the most efficient energy storage?

Whether on the road, by sea or in the air – the basis of modern transport systems is the internal combustion engine. Hardly any other invention has resulted in so many variants in just 100 years of development. One of the reasons for the technical success of diesel and petrol combustion engines is the high energy content of the fuel they burn. But how much energy do fossil fuels really contain, in comparison with hydrogen or lithium ion batteries? read more

Energy | 30. August 2010 | posted by Jan Oliver Löfken | 1 Comment

Energy question of the week: Can the greenhouse gas carbon dioxide be stored safely underground?

Coal-fired power stations release more carbon dioxide per kWh than any other fossil fuel facility, and Germany has a large number of just this sort of power station. It is estimated that around 40 billion tons of coal are stored in potential open cast deposits in Lusatia and the Lower Rhine Basin. That makes up 14 percent of world reserves. The question is, can the carbon dioxide emissions be captured and stored underground? read more

Space | 27. August 2010

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

Brasília

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 | 26. August 2010 | posted by Rolf Hempel | 4 Comments

Walking on the Moon – by telescope

We have all seen the images of the first manned Moon landing in 1969 often enough on the TV and remember the pictures of the lunar surface taken from orbit or from the landing site itself. But how much of all this can be seen with a telescope? And just where is the landing site? Here is a travel guide with a very special destination. read more

Energy | 23. August 2010 | posted by Jan Oliver Löfken | 2 Comments

Energy question of the week: Can wind turbines also float on the open sea?

The twelve offshore wind turbines that make up the 'alpha ventus' wind farm, 45 kilometres to the north of the North Sea island of Borkum, can generate sufficient electricity for 50,000 households. Like all other wind farms in the North Sea, these turbines are installed on firm foundations at water depths of between 30 and 50 metres. However, not all coastal countries have such a flat and shallow seabed immediately off their coastline. Might it not be a great deal simpler and less expensive to install wind turbines on floating platforms? read more

Space | 20. August 2010 | 1 Comment

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 | 1 Comment

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

Other | 17. August 2010 | posted by Marco Trovatello

DLR Blogs: improved readability

In the recent past, many of our readers pointed out a poor readability of DLR Blogs. We have optimised this last night. White font and dark blue links on a "brushed metal" background have now been replaced with a typical black font on a lighter coloured background. read more