Currently, airline and military airspace users do not have coordinated nor consistent methods of generating flight plans (pre-flight route structure definition). some use antiquated methods of route generation. some use weather data over 24 hours old. none account for the possible existence of an… More

Smart-skin is an emerging technology which has tremendous potential for military aircraft applications. All military aircraft employ large numbers of antenna apertures for a wide variety of communication and radar functions. An ideal smart-skin would consist of a multi-function, multi-mode antenna… More

Recently, a new method for trajectory optimization was introduced based on the concepts of differential inclusion and attainable sets. This approach eliminates the control from the problem formulation, and exhibits robust convergence even for singular control problems. It thus shows great potential… More

50540-98-I Imaging Fractures and Fracture Systems to Assess Reservoir Properties--American Spectrum Engineering and Science Services, 5010 Grand Central Drive, Morgantown, WV 26505-4797; (304) 284-9144 Mr. William K. Overbey, Jr., Principal Investigator Mr. William K. Overbey Jr., Business… More

It is proposed to develop and implement a simulation of spacecraft rendezvous and docking guidance, navigation, and control in elliptical orbit. The foundation of the simulation will be an extension of an existing tool for optimal rendezvous and docking simulations for spacecraft in circular orbit.… More

The individual software tools that make up the analytical capabilities for the design of entry vehicles using an aero-assist/aero-capture device have been fully developed. In fact the performance of such software against the flight data has been superb, and NASA has used the results to make… More

We propose to investigate the feasibility of obtaining fast and accurate trajectories using global geopotential models representing departures from the two-body plus J2 terms. The proposed geopotential formulations and numerical integration methods rely on multi-core processors and the emerging… More

It is proposed to develop desensitized optimal filtering techniques and to implement these algorithms in a navigation and sensor fusion tool kit. These proposed desensitized optimal filtering techniques include recent advances in robust and/or adaptive generalized Kalman and Sigma-Point filters for… More

Research on desensitized optimal filtering techniques and a navigation and sensor fusion tool kit using advanced filtering techniques is proposed. Research focuses on reducing the sensitivity of Kalman filters with respect to model parameter uncertainties using a robust trajectory optimization… More

Research on utilizing inexpensive and personal-level parallel computing architectures to speed up the implementation of the class of particle filters is proposed. This study will leverage NVIDIA Graphics Processing Units (GPUs) and multi-core CPUs that are quickly becoming commonly available for… More