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

A central computational issue in solving infinite-horizon nonlinear optimal control problems
is the treatment of the horizon. In this paper, we directly address this issue by a domain …

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 …

Estimation of spacecraft mass properties in the presence of noise is a nontrivial problem
that, when properly addressed, can substantially reduce the crew time devoted to cargo …

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 …

In order to control the orientation of a satellite, it is important to estimate the attitude
accurately. Time series estimation is especially important in micro and nanosatellites, whose …

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 …

It is presented in this article how to simultaneously alter the process and measurement noise
covariance matrices for nontraditional attitude filtering technique. The unscented Kalman …

This paper describes the development of a gyroless attitude determination system that can
rely on magnetometer and sun sensor measurements and achieve good accuracy. Vectors …