About the author

Ralph Kahle

After obtaining an aerospace engineering degree from the Technical University of Dresden, Ralph Kahle conducted research as a doctoral student at the DLR Institute of Planetary Research in Berlin on the areas of exposure to near-Earth asteroids and comets, as well as the avoidance of collisions.

Since 2004, he has been a researcher at the German Space Operations Center (GSOC) at DLR Oberpfaffenhofen. He works on flight dynamics systems for satellite missions for communications and Earth observation as well as robotic missions such as the on-orbit servicing mission DEOS.

Ralph Kahle is the flight dynamics engineer for the TerraSAR-X / TanDEM-X Mission. His responsibilities include precise orbit and attitude determination for the satellites, measuring their position relative to one another with millimetric accuracy, the generation of auxiliary products for radar processing, and control of the satellite formation.

Posts from Ralph Kahle

TanDEM-X Blog | 12. July 2010 | 5 Comments

Kunst im All - oder: Wie man eine Formation einstellt

Am Starttag, 21. Juni 2010, war TanDEM-X knapp 16.000 Kilometer von seinem Zwillingssatelliten TerraSAR-X entfernt. Heute sind es nur noch 2000 Kilometer. Nun ist es an der Zeit, die Relativbewegung zu bremsen und die Formation einzustellen. Dazu wird die Flugdynamikgruppe des German Space Operations Center (GSOC) in den kommenden acht Tagen insgesamt zehn Bahnmanöver durchführen. read more

TanDEM-X Blog | 12. July 2010 | 5 Comments

Art in space – or, how to set up a formation

On its launch date, 21 June 2010, roughly 16,000 kilometres separated TanDEM-X from its twin satellite, TerraSAR-X. Now, that distance has shrunk to just 2000 kilometres. The time has come for the relative movement between the two satellites to be slowed down, and for them to be set up for formation flying. To accomplish this, the Flight Dynamics Group at the German Space Operations Center (GSOC) will carry out a total of 10 orbital manoeuvres over the next eight days. read more