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Full-Text Articles in Engineering
Bomdetec - Wide Area Surveillance And Suicide Bomber Detection, John Beaty, Richard Sullivan, Carey M. Rappaport
Bomdetec - Wide Area Surveillance And Suicide Bomber Detection, John Beaty, Richard Sullivan, Carey M. Rappaport
Carey Rappaport
Amidst the manifold threats currently afflicting society, that of body-worn explosives is significant if not altogether paramount. Veiled under layers of clothing by individual suicide bombers, these explosives are often constructed of non-standard parts, making detection at a safe distance difficult. It behooves us to develop a detection system capable of locating such explosives at distances sufficient to prevent suicide bombers from approaching densely populated or strategically important areas. Funded by the Department of Homeland Security, the intent of this project is to synthesize four technologies--intelligent video, radar, X-ray, and terahertz--into one surveillance system for suicide bomber detection. Ideally, bombers …
Suicide Bomber Detection Using Millimeter-Wave Radar, Richard Sullivan, Morgan Galaznik, Jose Ángel Martinez-Lorenzo, Carey M. Rappaport
Suicide Bomber Detection Using Millimeter-Wave Radar, Richard Sullivan, Morgan Galaznik, Jose Ángel Martinez-Lorenzo, Carey M. Rappaport
Carey Rappaport
Amidst the manifold threats currently afflicting public welfare, that of body-worn explosives is significant if not altogether paramount. Commonly referred to as ""suicide bombers,"" the bearers of body-worn, improvised explosive devices (IEDs) enter crowded public areas in order to detonate the IDE, inflicting lethal damage to themselves and surrounding individuals. Constructed of non-standard parts and veiled under layers of clothing, these body-worn IEDs go frequently undetected. The aim of this research is to examine the feasibility of using millimeter-wave (MMW) radar to detect body-worn IEDs at distances up to 50 meters. In order to achieve a beamwidth capable of illuminating …
Reflector Antenna Discrete Distortion Determination : An Iterative-Field-Matrix Solution, José Ángel Martinez-Lorenzo, Carey M. Rappaport
Reflector Antenna Discrete Distortion Determination : An Iterative-Field-Matrix Solution, José Ángel Martinez-Lorenzo, Carey M. Rappaport
Carey Rappaport
The idealized shapes of satellite reflector antennas are often distorted once they are placed in orbit. The performance of such antennas can be improved by identifying the locations and amount of their surface distortions and then by correcting them using active surface distortion or array feeding. This work presents a method to determine the required discrete surface distortions to correct errors. The algorithm starts by discretizing the entire reflector surface into triangular patches, then by finding a linear relationship between the local distortion and the difference of the distorted and undistorted farfields patterns. A linear system of equations with the …