In the normal operation conditions of a pico satellite, a conventional Unscented Kalman
Filter (UKF) gives sufficiently good estimation results. However, if the measurements are not …

Unscented Kalman filter (UKF) is a filtering algorithm that gives sufficiently good estimation
results for the estimation problems of nonlinear systems even when high nonlinearity is in …

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 …

Thus far, Kalman filter based attitude estimation algorithms have been used in many space
applications. When the issue of pico satellite attitude estimation is taken into consideration …

Attitude estimation is a critical component of the Attitude Determination and Control System
(ADCS) of any satellite. It is used to convert the sensor observation data to an estimated …

A modified unscented Kalman filter is presented to estimate the quaternion parameters as
well as the angular velocities of a rigid gyro-less satellite under faulty sensor conditions. The …

This study surveys the developments in the gyroless attitude determination system,
especially for small satellites. Two kinds of gyroless satellite attitude determination …

A robust unscented Kalman filter based on a multiplicative quaternion-error approach is
proposed for high-precision spacecraft attitude estimation using quaternion measurements …

The attitude estimation of a spacecraft in low Earth orbit is considered with the design of two
different adaptation rules in the extended Kalman filter (EKF) algorithm. The adaptations are …

This article compares the attitude estimated by nonlinear estimator Cubature Kalman Filter
with results obtained by the Extended Kalman Filter and Unscented Kalman Filter. Currently …