The emergence of affordable practical miniature sensors has led to a tremendous leap forward in the ability to conduct effective Intelligence, Surveillance, and Reconnaissance (ISR) on the modern battlefield. Sensors are now impressively small and are capable of sensitively sensing many phenomena. Coupling this sensor data with a real world coordinate often provides the best tactical picture. However, it is not always practical to outfit these sensors with Global Positioning System (GPS) receivers because of size, weight and power (SWAP) limitations. It is very conceivable that hundreds or thousands of these sensors could be randomly distributed over a region, precluding careful placement at specified locations. In this paper, we propose a method for not only locating the individual sensors, but also subsequently using the resulting sensor network as an alterative to GPS.
A NASA program perspective is provided on the overall impact of advanced computational simulations on a portfolio of advanced air vehicles research. The current portfolio is built upon a rich history in both developing and employing advanced computational capabilities that enhance aerospace applications. These tools range from high-fidelity computational fluid dynamics simulations to comprehensive multidisciplinary design analysis and optimization codes. These analysis and design tools impact every area of vehicle-related research. Since this scope is so large, just a few representative examples from various aircraft and propulsion applications are provided. Brief assessments of potential future areas needing further development are also provided. In addition to using these tools to advance specific vehicle technologies, there are ongoing efforts to improve computational simulation capabilities in general by taking a long-term view of what key developments are needed in some key areas. Finally, a brief assessment is provided on how computational tools can be used more effectively in conjunction with ground and flight experimentation.
Corporate, government and military bodies focus significant resources to develop sophisticated and capable information-based systems. The concept of people and resources connected by a robust network capable of extremely high rates of information exchange is very attractive because it allows smaller groups to coordinate together and focus effects from geographically diverse locations. However, there is also a hidden danger that comes with such advanced technology. For example, in the case of the U.S. Military, clearly United States holds a technological advantage over our adversaries and that this advantage continues to expand. This technology gap has resulted in the emergence of potent asymmetrical warfare. All too often in science fiction movies, we see a small group of humans defeat a technologically superior alien race by striking at a hidden weakness that renders all of their advanced weapons useless, as a result of pervasive connectivity and interdependence. The analogy holds for any large network-centric enterprise, corporate or governmental. This paper addresses potential vulnerabilities of network centric warfare and focuses on specific technologies and methods that preempt this Achilles Heal scenario.
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