Attitude Determination Using a MEMS-Based Flight Information Measurement Unit

Attitude Determination Using a MEMS-Based Flight Information Measurement Unit

Obtaining precise attitude information is essential for aircraft navigation and control. This paper presents the results of the attitude determination using an in-house designed low-cost MEMS-based flight information measurement unit. This study proposes a quaternion-based extended Kalman filter to integrate the traditional quaternion and gravitational force decomposition methods for attitude d...

Precision Attitude Determination Using a Low Grade Gps-aided Inertial Measurement Unit

Precision attitude determination is a key requirement for precision targeting. Current targeting systems use range and bearing to target (relative to the Forward Observer’s GPS coordinates) to derive the target coordinates. The accuracy of these coordinates is currently limited by the accuracy to which the bearing to target can be observed. Conventional methods of determining attitude include g...

Unscented Kalman Filtering for Attitude Determination Using MEMS Sensors

This paper presents the results of a quaternion-based unscented Kalman filtering for attitude estimation using low cost MEMS sensors. The unscented Kalman filter uses the pitch and roll angles computed from gravity force decomposition as the measurement for the filter. The immeasurable gravity accelerations are deduced from the outputs of the three axes accelerometers, the relative acceleration...

Attitude and Heave Determination on Ships using MEMS-based Inertial Measurements

We conduct full-scale experimental validation and comparison of three different nonlinear attitude observers, two of them with inherent heave estimation, in two different operational scenarios encountered by an offshore vessel in the North Sea. Two different microelectro-mechanical inertial measurement units are the primary sensors for driving the nonlinear observers, which are aided by gyrocom...

Dynamic-Structural Attitude Unit: Concept and Measurement