An integrated Autopilot-and Guidance Algorithm is developed using Higher Order Sliding Mode Control, for interceptors steered by combination of aerodynamic lift, sustainer thrust and center of gravity divert thrusters. A smooth HOSM guidance generates flight path trajectory angular rates and attitude rate commands. The attitude rate maneuvers are aimed at producing desired aerodynamic lift and ...

Brand-extension strategies enhance success chances of new products, even though they expose brand image to dilution risks. The present work analyzes how brand-extension evaluation can affect the current brand image and proposes a theoretical model formed by five main factors related to brand associations, extension congruency and extension attitude. The model estimation includes structural equa...

This paper presents the design, analysis, and performance evaluation of an attitude filter for an Intervention-Autonomous Underwater Vehicle (I-AUV) working in tandem with an Autonomous Surface Craft (ASC). In the proposed framework, an ASC aids an I-AUV to determine its attitude by providing an inertial reference direction vector through acoustic modem communications, which is measured in body...

In this paper a constrained relative attitude determination solution of a formation of two vehicles is considered and the effect of constraint violation on the estimation error is studied. The solution for the relative attitude between the two vehicles is obtained only using line-of-sight measurements between them and a common (unknown) object observed by both vehicles. The solution represents ...

In this paper, two different algorithms are presented for the estimation of spacecraft body angular rates in the absence of gyro rate data for a star tracker mission. In first approach, body angular rates are estimated with the spacecraft attitude using a dynamical model of the spacecraft. The second approach makes use of a rapid update rate of star camera to estimate the spacecraft body angula...

This paper presents the overall mathematical model and results from pseudo linear recursive estimators of attitude and rate for a spinning spacecraft. The measurements considered are vector measurements obtained by sun-sensors, fixed head star trackers, horizon sensors, and three axis magnetometers. Two filters are proposed for estimating the attitude as well as the angular rate vector. One fil...

In Inertial Navigation System (INS) attitude estimation dominates the accuracy of velocity and position estimation. Traditional gyro-based attitude estimation assisted with Kalman filtering is subject to unbound error growth with time especially as using lowcost Micro-Electro-Mechanical System-based (MEMS-based) sensors for land vehicle application. Thus, in recent years a low-cost INS is still...

PW-Sat2 satellite is a 2kg CubeSat that is being developed by the students from Warsaw University of Technology. The project is a part of activity of the Students’ Space Association from Faculty of Power and Aeronautical Engineering. The satellite will be launched in 2016 in Low Earth Orbit to test the deorbitation method using deployed sail in the end of the mission. The CubeSat will have depl...

In this chapter, we focused on the posture estimation problem of a body moving in 3D space. This study is devoted to the reconstruction of the body attitude and Dynamic Body Acceleration (DBA) in free ranging animal (application in Bio-logging) where the access to GPS locations is limited or impossible. A quaternion-based complementary filter is designed to provide a viable attitude estimation ...