The Unscented Kalman filter (UKF) may suffer from performance degradation and even
divergence while mismatch between the noise distribution assumed as a priori by users and …

Magnetometers are an integral part of attitude determination system for the low-Earth
orbiting small satellites as they are lightweight, inexpensive and reliable. Yet using …

Manipulating unmanned aerial vehicles (MUAVs) are aerial robots equipped with a
mechanism to physically interact with the environment. State estimation of such robots is a …

In normal working conditions it is possible to achieve sufficient attitude estimation accuracy
for a satellite using regular Kalman filter algorithm. On the other hand, when there is a fault …

This paper proposes using TRIAD and Unscented Kalman Filter (UKF) algorithms in a
sequential architecture as a part of a small satellite attitude estimation algorithm. This …

Small satellites use commercial off-the-shelf sensors and actuators for attitude determination
and control (ADC) to reduce the cost. These sensors and actuators are usually not as robust …

The inertial/magnetic measurement units are an affordable instrument for the determination
of orientation. The sensors embedded in the system are affected by nonidealities that can be …

There has been an increasing interest in multi-disciplinary research on multisensor attitude
estimation technology driven by its versatility and diverse areas of application, such as …

Spaceborne gravity gradients are proposed in this paper to provide autonomous orbit
determination capabilities for near Earth satellites. The gravity gradients contain useful …

The gravity gradient is the second derivative of gravity potential. A gravity gradiometer can
measure the small change of gravity at two points, which contains more abundant navigation …