Aiming at a 1-cm orbit for low earth orbiters: Reduced-dynamic and kinematic precise orbit determination

The computation of high-accuracy orbits is a prerequisite for the success of Low Earth Orbiter (LEO) missions such as CHAMP, GRACE and GOCE. The mission objectives of these satellites cannot be reached without computing orbits with an accuracy at the few cm level. Such a level of accuracy might be achieved with the techniques of reduced-dynamic...

Adaptive-array antennae for GPS-interference suppression: A design for airborne vehicles

This report describes interference cancellation using spatial filtering with an adaptive array antenna. A design is done for use on board an airplane. This report contains the optimal design and computer simulations for array performance analysis.