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sensor Agnostics for Networked MAV Applications

Sensor Agnostics for Networked MAV Applications

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conference on Evolutionary and Bio-Inspired Computation - Theory and Applications iv

作者： Mitra, Atindra K. Gates, Miguel Barber, Chris Goodwin, Thomas Selmic, Rastko Ordonez, Raul Sekman, Ali Malkani, Mohan USAF Res Lab RYRR Bldg 6202241 Avion Circle Wright Patterson AFB OH 45433 USA Louisiana Tech Univ Ruston LA 71272 USA Northrop Grumman Elect Syst Div Baltimore MD 21240 USA Univ Dayton Dayton OH 45429 USA Tennessee State Univ Nashville TN 37209 USA

ISBN: (纸本)9780819481689

A number of potential advantages associated with a new concept denoted as sensor Agnostic networks are discussed. For this particular paper, the primary focus is on integrated wireless networks that contain one or more MAVs (Micro unmanned Aerial Vehicle). The development and presentation includes several approaches to analysis and design of sensor Agnostic networks based on the assumption of canonically structured architectures that are comprised of low-cost wireless sensor node technologies. A logical development is provided that motivates the potential adaptation of distributed low-cost sensor networks that leverage state-of-the-art wireless technologies and are specifically designed with pre-determined hooks, or facets, in-place that allow for quick and efficient sensor swaps between cost-low RF sensors, EO sensors, and Chem/Bio sensors. All of the sample design synthesis procedures provided within this paper conform to the structural low-cost electronic wireless network architectural constraints adopted for our new approach to generalized sensing applications via the conscious integration of sensor Agnostic capabilities.

关键词： Wireless sensor Network (WSN) Micro Air Vehicles (MAV) unmanned Ground Vehicles (UGV) Layered Sensing Radio Frequency sensor Technology Position-Adaptive sensors

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Heterogeneous sensor networks: A Bio-Inspired Overlay Architecture

Heterogeneous Sensor Networks: A Bio-Inspired Overlay Archit...

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conference on Ground/Air Multi-sensor Interoperability, Integration, and Networking for Persistent ISR

作者： Burman, Jerry Hespanha, Joao Madhow, Upamanyu Klein, Daniel Isaacs, Jason Venkateswaran, Sriram Pham, Tien Teledyne Sci Co 1049 Camino Dos Rios Thousand Oaks CA 91360 USA Univ Calif Santa Barbara Dept Elect & Comp Engn Santa Barbara CA 93106 USA US Army Res Lab Adelphi MD 20783 USA

ISBN: (纸本)9780819481580

Teledyne Scientific Company, the University of California at Santa Barbara (UCSB) and the Army Research Lab are developing technologies for automated data exfiltration from heterogeneous sensor networks through the Institute for Collaborative Biotechnologies (ICB). unmanned air vehicles (UAV) provide an effective means to autonomously collect data from unattended ground sensors (UGSs) that cannot communicate with each other. UAVs are used to reduce the system reaction time by generating autonomous data-driven collection routes. Bio-inspired techniques for search provide a novel strategy to detect, capture and fuse data across heterogeneous sensors. A fast and accurate method has been developed for routing UAVs and localizing an event by fusing data from a sparse number of UGSs;it leverages a bio-inspired technique based on chemotaxis or the motion of bacteria seeking nutrients in their environment. The system was implemented and successfully tested using a high level simulation environment using a flight simulator to emulate a UAV. A field test was also conducted in November 2009 at Camp Roberts, CA using a UAV provided by AeroMech Engineering. The field test results showed that the system can detect and locate the source of an acoustic event with an accuracy of about 3 meters average circular error.

关键词： unattended Ground sensor unmanned Air Vehicle Data Exfiltration Autonomous Operations Bio-Inspired Algorithms Chemotaxis Likelihood Function Data Fusion Route Planning Source Localization Acoustic Event Classification Particle Swarm Optimization Quadratically Constrained Least Squares Minimization

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MWIR room temperature photodetector based on laser-doped silicon carbide

MWIR room temperature photodetector based on laser-doped sil...

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conference on unmanned/unattended sensors and sensor networks VII

作者： Lim, Geunsik Manzur, Tariq Kar, Aravinda Univ Cent Florida CREOL Coll Opt & Photon Laser Adv Mat Proc LabDept Mech Mat & Aerosp Eng Orlando FL 32816 USA Undersea Warfare Electromagnet Syst Dev I&EW S&T Lead Newport RI 02841 USA

ISBN: (纸本)9780819483515

MWIR photon detector in the mid-infrared wavelength (2-5 mu m) range is developed using crystalline silicon carbide substrates. SiC, which is a wideband gap semiconductor, is laser-doped to create a dopant energy level corresponding to a quantum of energy for the required operating wavelength of the detector. The photons of the objects in the field of view excite the electrons of the detector, leading to changes in the refractive index. This change in the optical property of the detector can be measured remotely with a laser beam, such as a He-Ne laser beam of wavelength 632.8 nm, which makes it a wireless detector. While many IR detectors require cryogenic cooling ( 77 K) to suppress thermal generation-recombination processes in order to operate with good detectivity, the SiC-based detector can operate at room temperature with excellent performance. An n-type 4H-SiC substrate has been doped with Ga by a laser doping technique to create a detector element for the MWIR wavelength of 4.21 mu m corresponding to the photon energy 0.30 eV. The dopant energy level is confirmed by optical absorption measurements. The change in the refractive index is studied as a function of absorbed irradiance on the detector. The experimental result shows that the Ga-doped 4H-SiC sample can be used for MWIR detectors.

关键词： sensors Silicon carbide Mid-IR Refractive index Photodetectors Reflectivity Silicon Absorption Infrared sensors Semiconductors

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Mach-Zehnder fiber interferometer for people monitoring

Mach-Zehnder fiber interferometer for people monitoring

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conference on unmanned/unattended sensors and sensor networks VII

作者： Vasinek, Vladimir Latal, Jan Koudelka, Petr Siska, Petr Vitasek, Jan Skapa, Jan Tech Univ Ostrava Dept Telecommun CR-70833 Ostrava Czech Republic

ISBN: (纸本)9780819483515

Fiber optical interferometers belong to highly sensitive equipments that are able to measure slight changes like distortion of shape, temperature and electric field variation and etc. Their great advantage is that they are insensitive on ageing component, from which they are composed of. It is in virtue of herewith, that there are evaluated no changes in optical signal intensity but number interference fringes. To monitor the movement of persons, eventually to analyze the changes in state of motion we developed method based on analysis the dynamic changes in interferometric pattern. We have used Mach- Zehnder interferometer with conventional SM fibers excited with the DFB laser at wavelength of 1550 nm. It was terminated with optical receiver containing InGaAs PIN photodiode. Its output was brought into measuring card module that performs on FFT of the received interferometer signal. The signal rises with the composition of two waves passing through single interferometer arm. The optical fiber SMF 28e in one arm is referential;the second one is positioned on measuring slab at dimensions of 1x2m. A movement of persons over the slab was monitored, signal processed with FFT and frequency spectra were evaluated. They rose owing to dynamic changes of interferometric pattern. The results reflect that the individual subjects passing through slab embody characteristic frequency spectra, which are individual for particular persons. The scope of measuring frequencies proceeded from zero to 10 KHz. It was also displayed in experiments that the experimental subjects, who walked around the slab and at the same time they have had changed their state of motion ( knee joint fixation), embodied characteristic changes in their frequency spectra. At experiments the stability of interferometric patterns was evaluated as from time aspects, so from the view of repeated identical experiments. Two kinds of balls ( tennis and ping-pong) were used to plot the repeatability measurements and t

关键词： M-Z interferometer people movement monitoring FFT fiber interferometric sensor

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Configuration of a sparse network of LIDAR sensors to identify security-relevant behavior of people

Configuration of a sparse network of LIDAR sensors to identi...

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unmanned/unattended sensors and sensor networks VI conference

作者： Wenzl, Konrad Ruser, Heinrich Kargel, Christian Bundeswehr University Munich Institute for Measurement and Automation Division of Sensor Technology and Measurement Systems 85577 Neubiberg/Munich Germany

ISBN: (纸本)9780819477866

Surveillance is an important application of sensor networks. In this paper it is demonstrated how a sparse network of stationary infrared (IR) sensors with highly directional, stationary beam patterns based on the LIDAR principle can be used to reliably track persons. Due to the small number of sensors and their narrow beam patterns a significant portion of the area to be surveilled is not directly assessed by the sensors. To nonetheless achieve reliable tracking of moving targets in the entire area to be monitored, we employ the most appropriate sensor network configuration and propose a probabilistic tracking approach. The behavior of a person moving through the area of observation is classified as "normal" or "abnormal" depending upon the trajectory and motion dynamics. The classification is based on a linear Kalman prediction. © 2009 Copyright SPIE - The International Society for Optical Engineering.

关键词： Optical radar

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Miniature dissolved oxygen and turbulence optical sensor for river and coastal environmental applications

Miniature dissolved oxygen and turbulence optical sensor for...

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unmanned/unattended sensors and sensor networks VI conference

作者： Carapezza, Edward M. Lombardi, Gabrial Butman, Jerry Babb, ivar University of Connecticut-Avery Point Groton CT United States Phase Coherence Torrance CA United States

ISBN: (纸本)9780819477866

This paper describes an innovative miniature optical sensor for predicting dissolved oxygen concentrations and measuring turbulence in river and littoral water columns. The dissolved oxygen and turbulence sensor consists of a single-frequency laser transmitter and a photodetector on which the scattered light from the turbulent water at the base of a dam or spillway is coherently mixed with a sample of the transmitted beam. This miniature sensor could be used both upstream and downsteam of dams and weirs to predict the amount of dissolved oxygen and turbulence in these waters. It could also be used on mobile platforms, such as unmanned underwater vehicles (UUV's), to monitor the edges of biological or chemical plumes or for wake follow platforms, schools of fish or marine mammals or on stationary unattended underwater sensors to monitor natural aeration and turbulence in littoral and riverine waters. Arrays of fixed unattended sensors could be used to detect the wake of transiting submerged vehicles, scuba divers, marine mammals or large schools of fish. A mobile platform equipped with a miniature sensor could to be cued to the general location and depth of an underwater target and then the platform could use this small aperture sensor to acquire and follow the wake. This dissolved oxygen and turbulence sensor system could be miniaturized and packaged into a very small volume;approximately the size of a wristwatch. © 2009 Copyright SPIE - The International Society for Optical Engineering.

关键词： Fish

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Remote control of open groups of remote sensors

Remote control of open groups of remote sensors

引用

unmanned/unattended sensors and sensor networks VI conference

作者： Sapaty, Peter Institute of Mathematical Machines and Systems National Academy of Sciences Glushkova Ave 42 03187 Kiev Ukraine

ISBN: (纸本)9780819477866

A distributed technology will be presented enabling a remote operator to manage arbitrary sized groups of stationary or mobile sensors (or robots), behaving altogether as an integral and global-goal-driven unit. The group is tasked in a Distributed Scenario Language (DSL) collectively executed by communicating interpreters embedded in individual sensors and integrated with their functionalities. Compact and created on the fly, DSL scenarios can be remotely injected into any sensor, subsequently self-replicating, self-modifying, and self-spreading in a virus mode throughout the whole group, tasking individual units and setting needed operational infrastructures among them. The approach can remotely control dynamic and open systems of different natures and comprehend complex phenomena unavailable to individual sensors. © 2009 Copyright SPIE - The International Society for Optical Engineering.

关键词： Remote control

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unmanned/unattended sensors and sensor networks VI

Unmanned/Unattended Sensors and Sensor Networks VI

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unmanned/unattended sensors and sensor networks VI conference

ISBN: (纸本)9780819477866

The proceedings contain 24 papers. The topics discussed include: joint force protection advanced security system (JFPASS) 'the future of force protection: integrate and automate';miniature dissolved oxygen and turbulence optical sensor for river and coastal environmental applications;configuration of a sparse network of LIDAR sensors to identify security-relevant behavior of people;a new approach for determining reliability of unmanned vehicles network using fuzzy logic;simulation of an algorithm for determining the reliability of unmanned ground vehicle networks;collaborating miniature drones for surveillance and reconnaissance;mobile optical high-speed data links with small terminals;cockpit to helmet optical wireless link: prototype hardware demonstration;retro-reflective communications over a kilometer range using a MEMS-based optical tag;and integration of self-organizing map (SOM) and kernel density estimation (KDE) for network intrusion detection.

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Simulation of an algorithm for determining the reliability of unmanned ground vehicle networks

Simulation of an algorithm for determining the reliability o...

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unmanned/unattended sensors and sensor networks VI conference

作者： Singh, Harpreet Dixit, Arati M. Saab, Kassem Gerhart, Grant R. Department of Electrical and Computer Engineering Wayne State University Detroit MI 48202 United States U.S. Army Tank Automotive Research Development and Engineering Ctr. Warren MI 48397 United States

ISBN: (纸本)9780819477866

There is an increasing interest in the army of small unmanned robots taking part in defense operations. It is considered important to predict the reliability of the group of robots taking part in different operations. A group of robots have both coordination and collaboration. The robot operations are considered as a network graph whose system reliability can be determined with the help of different techniques. Once a specified reliability is achieved the commander controlling the operation can take appropriate action. This paper gives a simulation which can determine the system reliability of the robotic systems having collaboration and coordination. The procedure developed is based on binary decision diagrams to obtain a disjoint Boolean expression. The procedure is applicable for any number of nodes and the branches. For illustration purposes reliability of simple circuits like series network, parallel network, series-parallel and non-series parallel network are illustrated. It is hoped that more work in this area will lead to the development of algorithms which will be ultimately used for a real time environment. © 2009 Copyright SPIE - The International Society for Optical Engineering.

关键词： Network security

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A new approach for determining reliability of unmanned vehicles network using fuzzy logic

A new approach for determining reliability of unmanned vehic...

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unmanned/unattended sensors and sensor networks VI conference

作者： Mustapha, Adam Singh, Harpreet Saab, Kassem Rai, Suresh Gerhart, Grant R. Department of Electrical and Computer Engineering Wayne State University Detroit MI 48202 United States Department of Electrical and Computer Engineering LSU Baton Rouge LA 70803 United States U.S. Army Tank Automotive Research Development and Engineering Ctr. Warren MI 48397 United States

ISBN: (纸本)9780819477866

Some interest has recently been shown in determining the reliability of unmanned ground vehicles network. Based on the predicted reliability, a commander can take appropriate action in the battle field operation for unmanned ground vehicles network. The reliability should include coordination and collaboration of a number of different unmanned ground vehicles. Some approaches for determining the reliability of unmanned vehicles have been discussed in the literatures. In this paper, we propose a new algorithm by which the reliability of unmanned ground vehicles network is predicted using fuzzy approach. The approach is different from statistical approaches discussed in previous papers. The algorithm suggested here is based on all simple paths obtained between the terminal nodes of the network in question or the cutset expression of the terminal nodes. Each variable in the Boolean expression obtained from simple path method or from the cutset method will be subjectively assigned a membership grade by an expert in the field. Fuzzy union and fuzzy intersection operations are used to predict the reliability of the network in question. New theorems have been developed to determine the disjoint expression using fuzzy logic. The comparison of this new approach is given with the existing approaches. Further, assuming node reliability and branch reliability one can also predict system reliability of the unmanned ground vehicles network using fuzzy logic. © 2009 Copyright SPIE - The International Society for Optical Engineering.

关键词： Fuzzy logic

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