TanDEM-X - TerraSAR-X add-on for Digital Elevation Measurement

The TanDEM-X project is being implemented by a Public-Private Partnership (PPP) between the German Aerospace Center (DLR) and Astrium GmbH.

The primary goal of the TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) mission is to generate a global digital elevation model. To achieve this, two satellites – TanDEM-X and TerraSAR-X, a satellite of almost identical construction which has been in orbit since 2007 – will form the first configurable SAR (Synthetic Aperture Radar) interferometer in space with a separation of only a few hundred metres. A powerful ground segment which is closely interfaced with that of TerraSAR-X completes the TanDEM-X system. The satellites will fly in formation and operate in parallel for three years to cover the entire surface of the Earth.

DLR is responsible for the scientific exploitation of the TanDEM-X data as well as for planning and implementing the mission, controlling the two satellites and generating the digital elevation model. Astrium built the satellite and shares in the cost of its development and exploitation. As with TerraSAR-X, the responsibility for marketing the TanDEM-X data commercially lies in the hands of Infoterra GmbH, a subsidiary of Astrium.

Launch Date

June 21, 2010

Orbit Altitude

510 km

Orbit Inclination

97°

Mass

1320 kg

Dimensions

5 x 2,4 m

Launch Site

Baikonour, Kazakhstan

Launcher

Dnepr-1

Mission Duration

5 years planned / still operational

Control Center

DLR / GSOC

Ground Stations

Weilheim, Neustrelitz, Inuvik, O’Higgins, Spitzbergen