Ananth Vadlamani

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This paper discusses the various aspects of using airborne laser scanners (ALS) in terrain referenced navigation (TRN) systems. The paper addresses the system performance of these new ALS-based systems and compares their performance to traditional terrain referenced navigation systems based on radar altimeter and baro-altimeter sensors. The TRN system(More)
One goal in the development of a Synthetic Vision System (SVS) is to create a system that can be certified by the Federal Aviation Administration (FAA) for use at various flight criticality levels. As part of NASA’s Aviation Safety Program, Ohio University and NASA Langley have been involved in the research and development of real-time terrain database(More)
Advanced cockpit display systems are the topic of active research to overcome the problems caused by limited visibility and to improve aircraft safety and airport operations, in general. The National Aeronautics and Space Administration's (NASA) Aviation Safety and Security Program (AvSSP) is developing Synthetic Vision Systems (SVS) to improve a pilot's(More)
This article discusses various methods of improving the detection capability of horizontal and vertical failure modes for a terrain database integrity monitor that is purely based on the inputs from downward looking sensors. Terrain database integrity monitors which use radar altimeter and GPS inputs have previously been proposed for Synthetic Vision(More)
This paper outlines the use of a high-resolution laser range scanner to detect terrain features and obstacles and the development of a test bed for the obstacle and terrain feature detection system. Results from tests conducted at Ohio University and simulations from data collected during flight tests in the vicinity of Braxton County Airport (K481), WV are(More)
In recent years, the increasing demand on the national airspace system (NAS) has propelled further research on new technologies, communication systems, sensors and methods to handle the growing congestion around the terminal area. These include programs such as the runway incursion prevention system (RIPS), automatic dependent surveillance - broadcast(More)
This paper examines the use of airborne Light Detection and Ranging (LIDAR) for detection and velocity estimation of mobile obstacles in airport movement areas during landing and low altitude flight. Depending upon the operational conditions, obstacles may become hazards posing a threat to landing safety. In order to prevent runway incursions caused by(More)
Synthetic vision systems provide a synthesized view of the outside world to pilots on displays in the flight deck. Terrain databases onboard aircraft are used as the source of terrain elevation information on synthetic vision system displays. Because the primary function of these displays is to improve flight safety, it is imperative that the terrain data(More)
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