The Experts below are selected from a list of 159 Experts worldwide ranked by ideXlab platform
H F Taylor - One of the best experts on this subject based on the ideXlab platform.
-
field test of a distributed fiber optic Intrusion Sensor system for long perimeters
Applied Optics, 2007Co-Authors: Juan Carlos Juarez, H F TaylorAbstract:Field tests in desert terrain of a distributed Sensor system for detecting and locating intruders based on the phase-sensitive optical-time-domain reflectometer (phi-OTDR) are described. The sensing element is a single-mode telecommunications fiber in a 4.5 mm diameter cable buried in a trench filled with loose sand. Light pulses from a continuous-wave Er:fiber Fabry-Perot laser with a narrow (<3 kHz) instantaneous linewidth and low (few kilohertz per second) frequency drift are injected into one end of the fiber, and the orthogonal polarizations of the backscattered light are monitored with separate receivers. Localized phase changes in the optical carrier are sensed by subtracting a phi-OTDR trace from an earlier stored trace. High sensitivity and consistent detection of intruders on foot and of vehicles traveling down a road near the cable line was realized over a cable length of 8.5 km and a total fiber path of 19 km in real time.
-
Field test of a distributed fiber-optic Intrusion Sensor system for long perimeters
Applied optics, 2007Co-Authors: Juan Carlos Juarez, H F TaylorAbstract:Field tests in desert terrain of a distributed Sensor system for detecting and locating intruders based on the phase-sensitive optical-time-domain reflectometer (phi-OTDR) are described. The sensing element is a single-mode telecommunications fiber in a 4.5 mm diameter cable buried in a trench filled with loose sand. Light pulses from a continuous-wave Er:fiber Fabry-Perot laser with a narrow (
-
Distributed Fiber Optic Intrusion Detection System with Improved Sensitivity
Optical Fiber Sensors, 2006Co-Authors: Myungjun Lee, H F TaylorAbstract:This paper describes results of field test and analyzes data on the response of a distributed fiber optic Intrusion Sensor for detecting and locating intruders based on a phase-sensitive optical time domain reflectometer.
-
Polarization discrimination in a phase-sensitive optical time-domain reflectometer Intrusion-Sensor system
Optics letters, 2005Co-Authors: Juan Carlos Juarez, H F TaylorAbstract:A distributed Sensor system for detecting and locating intruders based on a phase-sensitive optical time-domain reflectometer (phi-OTDR) that utilizes polarization discrimination is described. The sensing element is a single-mode telecommunications fiber in a 3 mm diameter cable buried along a monitored perimeter in a 20-46 cm deep, 10 cm wide trench in clay soil. Light pulses from a continuous-wave Er fiber Fabry-Perot laser with a narrow (< 3 kHz) instantaneous linewidth and low (a few Kilohertz per second) frequency drift are injected into one end of the fiber, and the orthogonal polarizations of the backscattered light are monitored with separate receivers. Localized phase changes in the optical carrier are sensed by subtraction of a phi-OTDR trace from an earlier stored trace. In field tests with a monitored length of 12 km, detection of intruders on foot as far as 4.5 m from the cable line was consistently achieved.
-
Distributed fiber optic Intrusion Sensor system for monitoring long perimeters
Sensors and Command Control Communications and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IV, 2005Co-Authors: Juan Carlos Juarez, H F TaylorAbstract:The use of an optical fiber as a distributed Sensor for detecting and locating intruders over long perimeters (>10 km) is described. Phase changes resulting from either the pressure of the intruder on the ground immediately above the buried fiber or from seismic disturbances in the vicinity are sensed by a phase-sensitive optical time-domain reflectometer (Φ-OTDR). Light pulses from a cw laser operating in a single longitudinal mode and with low (MHz/min range) frequency drift are injected into one end of the single mode fiber, and the backscattered light is monitored with a photodetector. In laboratory tests with 12 km of fiber on reels, the effects of localized phase perturbations induced by a piezoelectric fiber stretcher on Φ-OTDR traces were characterized. In field tests in which the sensing element is a single mode fiber in a 3-mm diameter cable buried in a 20-46 cm deep, 10 cm wide trench in clay soil, detection of intruders on foot up to 4.6 m from the cable line was achieved. In desert terrain field tests in which the sensing fiber is in a 4.5-mm diameter cable buried in a 30 cm deep, 75 cm wide trench filled with loose sand, high sensitivity and consistent detection of intruders on foot and of vehicles traveling down a road near the cable line was realized over a cable length of 8.5 km and a total fiber path of 19 km. Based on these results, this technology may be regarded as a candidate for providing low-cost perimeter security for nuclear power plants, electrical power distribution centers, storage facilities for fuel and volatile chemicals, communication hubs, airports, government offices, military bases, embassies, and national borders.
Anup K Ghosh - One of the best experts on this subject based on the ideXlab platform.
-
automating Intrusion response via virtualization for realizing uninterruptible web services
Network Computing and Applications, 2009Co-Authors: Yih Huang, Anup K GhoshAbstract:We present a virtualization-based web server system, a prototype, and experimental results for providing uninterrupted web services in the presence of Intrusion attacks and software faults. The proposed system utilizes replicated virtual servers managed by a closed-loop feedback controller. Using anomaly and Intrusion Sensor outputs, the controller calculates cost-weighted actions against threats to ensure web service continuity. We will show that the system can handle broad classes of attacks. Experiment results show that our prototype retains 60% of its peak throughput under 8 DoS attacks per second over extended periods.
-
NCA - Automating Intrusion Response via Virtualization for Realizing Uninterruptible Web Services
2009 Eighth IEEE International Symposium on Network Computing and Applications, 2009Co-Authors: Yih Huang, Anup K GhoshAbstract:We present a virtualization-based web server system, a prototype, and experimental results for providing uninterrupted web services in the presence of Intrusion attacks and software faults. The proposed system utilizes replicated virtual servers managed by a closed-loop feedback controller. Using anomaly and Intrusion Sensor outputs, the controller calculates cost-weighted actions against threats to ensure web service continuity. We will show that the system can handle broad classes of attacks. Experiment results show that our prototype retains 60% of its peak throughput under 8 DoS attacks per second over extended periods.
Yih Huang - One of the best experts on this subject based on the ideXlab platform.
-
automating Intrusion response via virtualization for realizing uninterruptible web services
Network Computing and Applications, 2009Co-Authors: Yih Huang, Anup K GhoshAbstract:We present a virtualization-based web server system, a prototype, and experimental results for providing uninterrupted web services in the presence of Intrusion attacks and software faults. The proposed system utilizes replicated virtual servers managed by a closed-loop feedback controller. Using anomaly and Intrusion Sensor outputs, the controller calculates cost-weighted actions against threats to ensure web service continuity. We will show that the system can handle broad classes of attacks. Experiment results show that our prototype retains 60% of its peak throughput under 8 DoS attacks per second over extended periods.
-
NCA - Automating Intrusion Response via Virtualization for Realizing Uninterruptible Web Services
2009 Eighth IEEE International Symposium on Network Computing and Applications, 2009Co-Authors: Yih Huang, Anup K GhoshAbstract:We present a virtualization-based web server system, a prototype, and experimental results for providing uninterrupted web services in the presence of Intrusion attacks and software faults. The proposed system utilizes replicated virtual servers managed by a closed-loop feedback controller. Using anomaly and Intrusion Sensor outputs, the controller calculates cost-weighted actions against threats to ensure web service continuity. We will show that the system can handle broad classes of attacks. Experiment results show that our prototype retains 60% of its peak throughput under 8 DoS attacks per second over extended periods.
Juan Carlos Juarez - One of the best experts on this subject based on the ideXlab platform.
-
field test of a distributed fiber optic Intrusion Sensor system for long perimeters
Applied Optics, 2007Co-Authors: Juan Carlos Juarez, H F TaylorAbstract:Field tests in desert terrain of a distributed Sensor system for detecting and locating intruders based on the phase-sensitive optical-time-domain reflectometer (phi-OTDR) are described. The sensing element is a single-mode telecommunications fiber in a 4.5 mm diameter cable buried in a trench filled with loose sand. Light pulses from a continuous-wave Er:fiber Fabry-Perot laser with a narrow (<3 kHz) instantaneous linewidth and low (few kilohertz per second) frequency drift are injected into one end of the fiber, and the orthogonal polarizations of the backscattered light are monitored with separate receivers. Localized phase changes in the optical carrier are sensed by subtracting a phi-OTDR trace from an earlier stored trace. High sensitivity and consistent detection of intruders on foot and of vehicles traveling down a road near the cable line was realized over a cable length of 8.5 km and a total fiber path of 19 km in real time.
-
Field test of a distributed fiber-optic Intrusion Sensor system for long perimeters
Applied optics, 2007Co-Authors: Juan Carlos Juarez, H F TaylorAbstract:Field tests in desert terrain of a distributed Sensor system for detecting and locating intruders based on the phase-sensitive optical-time-domain reflectometer (phi-OTDR) are described. The sensing element is a single-mode telecommunications fiber in a 4.5 mm diameter cable buried in a trench filled with loose sand. Light pulses from a continuous-wave Er:fiber Fabry-Perot laser with a narrow (
-
Polarization discrimination in a phase-sensitive optical time-domain reflectometer Intrusion-Sensor system
Optics letters, 2005Co-Authors: Juan Carlos Juarez, H F TaylorAbstract:A distributed Sensor system for detecting and locating intruders based on a phase-sensitive optical time-domain reflectometer (phi-OTDR) that utilizes polarization discrimination is described. The sensing element is a single-mode telecommunications fiber in a 3 mm diameter cable buried along a monitored perimeter in a 20-46 cm deep, 10 cm wide trench in clay soil. Light pulses from a continuous-wave Er fiber Fabry-Perot laser with a narrow (< 3 kHz) instantaneous linewidth and low (a few Kilohertz per second) frequency drift are injected into one end of the fiber, and the orthogonal polarizations of the backscattered light are monitored with separate receivers. Localized phase changes in the optical carrier are sensed by subtraction of a phi-OTDR trace from an earlier stored trace. In field tests with a monitored length of 12 km, detection of intruders on foot as far as 4.5 m from the cable line was consistently achieved.
-
Distributed fiber optic Intrusion Sensor system for monitoring long perimeters
Sensors and Command Control Communications and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense IV, 2005Co-Authors: Juan Carlos Juarez, H F TaylorAbstract:The use of an optical fiber as a distributed Sensor for detecting and locating intruders over long perimeters (>10 km) is described. Phase changes resulting from either the pressure of the intruder on the ground immediately above the buried fiber or from seismic disturbances in the vicinity are sensed by a phase-sensitive optical time-domain reflectometer (Φ-OTDR). Light pulses from a cw laser operating in a single longitudinal mode and with low (MHz/min range) frequency drift are injected into one end of the single mode fiber, and the backscattered light is monitored with a photodetector. In laboratory tests with 12 km of fiber on reels, the effects of localized phase perturbations induced by a piezoelectric fiber stretcher on Φ-OTDR traces were characterized. In field tests in which the sensing element is a single mode fiber in a 3-mm diameter cable buried in a 20-46 cm deep, 10 cm wide trench in clay soil, detection of intruders on foot up to 4.6 m from the cable line was achieved. In desert terrain field tests in which the sensing fiber is in a 4.5-mm diameter cable buried in a 30 cm deep, 75 cm wide trench filled with loose sand, high sensitivity and consistent detection of intruders on foot and of vehicles traveling down a road near the cable line was realized over a cable length of 8.5 km and a total fiber path of 19 km. Based on these results, this technology may be regarded as a candidate for providing low-cost perimeter security for nuclear power plants, electrical power distribution centers, storage facilities for fuel and volatile chemicals, communication hubs, airports, government offices, military bases, embassies, and national borders.
-
Distributed fiber-optic Intrusion Sensor system
Journal of Lightwave Technology, 2005Co-Authors: Juan Carlos Juarez, E.w. Maier, Kyoo Nam Choi, H F TaylorAbstract:A distributed Sensor system for detecting and locating intruders based on the phase-sensitive optical-time-domain reflectometer (/spl phi/-OTDR) is described. The sensing element is a cabled single-mode telecommunications fiber buried along the monitored perimeter. Light pulses from a continuous-wave Er:fiber Fabry-Pe/spl acute/rot laser with a narrow (/spl ap/3 kHz) instantaneous linewidth and low (few kilohertz per second) frequency drift are injected into one end of the fiber, and the backscattered light is monitored with a photodetector. The effect of phase changes resulting from the pressure of the intruder on the ground immediately above the buried fiber are sensed by subtracting a /spl phi/-OTDR trace from an earlier stored trace. In laboratory tests with fiber on reels, the effects of localized phase perturbations induced by a piezoelectric fiber stretcher on /spl phi/-OTDR traces were observed. In field tests, people walking on the ground above a buried fiber cable induced phase shifts of several-/spl pi/ radians.
Susan M. Bridges - One of the best experts on this subject based on the ideXlab platform.
-
HICSS - Intrusion Sensor data fusion in an intelligent Intrusion detection system architecture
37th Annual Hawaii International Conference on System Sciences 2004. Proceedings of the, 2004Co-Authors: Ambareen Siraj, Rayford B. Vaughn, Susan M. BridgesAbstract:Most modern Intrusion detection systems employ multiple Intrusion Sensors to maximize their trustworthiness. The overall security view of the multi-Sensor Intrusion detection system can serve as an aid to appraise the trustworthiness in the system. This paper presents our research effort in that direction by describing a decision engine for an intelligent Intrusion detection system (IIDS) that fuses information from different Intrusion detection Sensors using an artificial intelligence technique. The decision engine uses fuzzy cognitive maps (FCMs) and fuzzy rule-bases for causal knowledge acquisition and to support the causal knowledge reasoning process. In this paper, we report on the workings of the decision engine that has been successfully embedded into the IIDS architecture being built at the Center for Computer Security Research (CCSR), Mississippi State University.
-
Intrusion Sensor data fusion in an intelligent Intrusion detection system architecture
Hawaii International Conference on System Sciences, 2004Co-Authors: Ambareen Siraj, Rayford B. Vaughn, Susan M. BridgesAbstract:Most modern Intrusion detection systems employ multiple Intrusion Sensors to maximize their trustworthiness. The overall security view of the multi-Sensor Intrusion detection system can serve as an aid to appraise the trustworthiness in the system. This paper presents our research effort in that direction by describing a decision engine for an intelligent Intrusion detection system (IIDS) that fuses information from different Intrusion detection Sensors using an artificial intelligence technique. The decision engine uses fuzzy cognitive maps (FCMs) and fuzzy rule-bases for causal knowledge acquisition and to support the causal knowledge reasoning process. In this paper, we report on the workings of the decision engine that has been successfully embedded into the IIDS architecture being built at the Center for Computer Security Research (CCSR), Mississippi State University.
