This review article summarizes the results of space research on eye movements and subjective perception during vestibular stimulation. Inflight and postflight changes in reflex eye movements gain are described for head angular rotation (yaw, pitch, and roll), linear acceleration, off-vertical axis rotation, and optokinetic stimulation. There is evidence that changes in eye movements in microgra...

For navigation of unmanned aerial vehicles (UAVs), attitude estimation is essential. We present a method for attitude estimation (pitch and roll angle) from aerial fisheye images through horizon detection. The method is based on edge detection and a probabilistic Hough voting scheme. In a flight scenario, there is often some prior knowledge of the vehicle altitude and attitude. We exploit this ...

The wind-driven dynamic manipulator is a device which uses the wind tunnel freestream energy to drive multiaxis maneuvers of test models. This paper summarizes work performed using the device in several applications and discusses current work on characterizing the aerodynamics of an X-38 vehicle model in pitch-yaw maneuvers. Previous applications in flow visualization, adaptive control and line...

Micro-air vehicles have been increasingly employed in diverse research projects in both military and civilian applications. That is because their high maneuverability and accurate mobility. Many of them have been successfully used in outdoor areas, while some have been operated indoors. However, very few have dedicated especial attention to the case of high pitch and roll movements while doing ...

Multi-antenna GPS receiver configurations and methods are assessed to determine roll, pitch and azimuth of a survey launch operating at cruising speeds of 10 to 15 knots. Two receiver configurations are inter-compared, namely a 4antenna Ashtech 3DF system and a 3-GPSCardTM configuration. The survey launch antenna configurations and marine trials conducted to test these systems are described. Th...