Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 27 for “"Transponders"”.
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Real-time 3-d localization using radar and passive surface acoustic wave transponders
… and characterization of novel passive transponders that allow range measurements at short range and at high update rates. Multiple RADAR measurement stations use phase-encoded chirps to selectively track individual transponders by triangulation of range and/or angle measurements. …
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Electromagnetic Tracking for Medical Imaging
… inside the CT suite, and a set of three Beacon transponders was bonded to a plastic fixture. The tracking system was tested under different working parameters including orientation of tracking beacons, the gain level of the frontend amplifier, the distance between the transponders and the sensor …
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Advances in real-time thoracic guidance systems
… tracking of up to three implanted wireless transponders. Additionally, Medtronic Navigation uses wired electromagnetic tracking to guide surgical tools for image guided surgery: IGS). Utilizing real-time EM position monitoring, a prototype system was developed to guide a therapeutic linear …
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A Telemetry Link Using Electromagnetic Induction
… with a number of remote units - called transponders. Transponders store energy, derived exclusively from the induction field, and use it to perform remote measurement processes on demand from the surface. They require a very long working life without access or maintenance, and must …
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A preliminary investigation into effects of flipper banding on African penguins spheniscus demersus
… transponder only, and 100 that have both transponders and a stainless steel flipper band.
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Remote synchronization method for the quasi-zenith satellite system
… steerable on-board clocks which act as transponders re-broadcasting the precise time remotely provided by the time synchronization network located on the ground. This allows the system to operate optimally when satellites are in direct contact with the ground station, making it suitable …
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Analysis of a high resolution deep ocean acoustic navigation system
… acoustic travel times between survey points and transponders. Non-linear regression techniques are employed to develop a maximum likelihood estimator for net element positions based on these phase and travel time measurements. An approximate error covariance matrix is generated and an optimum …
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Efficient Network Systems Design for Machine Learning
… computing systems. We argue that pluggable transponders are a prime platform for performing photonic computing inside the network without having to replace networking switches and routers. Optical transponders are ubiquitous in today's wide-area and datacenter networks, giving us a unique …
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Automated Traffic Control for Smart Landing Facilities
… two overlapped radar responses. Second, to avoid transponders responses overlapping, requirements in terms of aircraft safety distance are computed, different conflicts in air traffic around the SLF are examined and a solution is proposed for each case. And finally, the thesis investigates how far …
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Reconhecimento de caracteres alfanuméricos de placas em imagens de veículos
… duas abordagens distintas: a utilização de transponders e a utilização de técnicas de visão computacional [INI85] . Estas são essencialmente úteis em casos em que não é viável obrigar os motoristas a instalar transponders em seus automóveis. No entanto, essas técnicas são mais sensíveis às …
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In-orbit testing of satellite TWTA's without commercial traffic interference
… rely on spare ‘TWTAs to ensure that most of the transponders will be operating at the spacecraft end·of-life. We wish to track the °health° of the operating TWTAs in order to accurately predict the remaining useful lifetime of the satellite transponder. This information is very useful for system …
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RELATING METABOLIC PHENOTYPES TO MOVEMENT BEHAVIOR IN BROOK TROUT
… were then tagged with passive integrated transponders (PIT) and tracked with stationary readers and a backpack reader during the summer. Brook trout that moved over 250m displayed a significantly larger aerobic scope than individuals that moved less than 250m. Temperature effects on …
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Movement Patterns of the Kentucky Arrow Darter (Etheosotma spilotum), Frecklebelly Darter (Percina stictogaster), and Southern Redbelly Dace (Chrosomus erythrogaster) in Elisha Creek and Gilbert's Big Creek, Red Bird River, Kentucky.
… River, Kentucky, utilizing Passive Integrated Transponders and an antennae detection system. Etheostoma spilotum is listed as a threatened species under the Endangered Species Act. Percina stictogaster is acknowledged as a species of greatest conservation need in Kentucky by the Kentucky …
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Route Validation Using Radio Frequency Identification
… of RFID technology is that in this scheme, the transponders are permanently installed while the interrogator is affixed to a person or object that travels the course. Data are collected by the interrogator and can be examined later to derive path taken, distance, and time. The technology can …
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Design and Implementation of a Practical Aircraft Position and Reporting Identification Beacon (PRIB)
… aircraft tracking system, which does not rely on transponders. To this end a new tracking aircraft system is proposed, which will be referred to as the Positioning and Reporting Identification Beacon (PRIB) system. Due to size, mass, power, and financial constraints, the design must be small, …
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Precision autonomous underwater navigation
… survey necessitate using fixed acoustic transponders - an instrumented navigation environment. This thesis focuses on the problems particular to operating precisely within such an environment by developing a design method and a navigation algorithm. Responsible documentation, through …
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Salmonids in an Urban Stream: Movement, Habitat, and Potential Barriers
… streams. This study used Passive Integrated Transponders (PIT-tags) to monitor the movement and habitat use of two salmonid species (<em>Salvelinus fontinalis</em> and <em>Oncorhynchus mykiss</em>) in an urban section of Wilson Creek, located in Ellensburg, Washington. Salmonids ranged in …
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Global non-dynamic refinement of radial orbit error for altimetric earth satellites
… for the tracking of ERS-1 by ground-based transponders are carried out. The potential effectiveness on the radial orbital accuracy of locating future tracking sites in regions of high latitudinal magnitude is demonstrated.
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A position-location system utilizing geosynchronous communication satellites
… study describes a position-location system using transponders on-board geosynchronous communication satellites. The system uses three geosynchronous communication satellites at a time to relay synchronized television signals. The signals provide a timing system to measure the ranges from the …
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Cooperative navigation between surface and sub-surface vehicles
… area limited by the acoustic range of the transponders or USBL. This thesis presents 3 major novel contributions to the field. The first one is a start to-goal real-time path planner with path repairing capabilities for vehicles to operate in unknown environments. This extension to …
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