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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"passive radar"”.
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Electronic countermeasures applied to passive radar
Passive Radar (PR) is a form of bistatic radar that utilises existing transmitter infrastructure such as FM radio, digital audio and video broadcasts (DAB and DVB-T/T2), cellular base station transmitters, and satellite-borne illuminators like DVB-S instead of a dedicated radar transmitter. …
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Aircraft state estimation using cameras and passive radar
… trackers. The MTTF was applied to the problem of passively monitoring airspace. Two applications were built: a passive radar MTT module and a comprehensive visual object tracking (VOT) system. Both applications require a solution to the MTT problem, for which the MTTF was utilized. The VOT system …
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A Particle Filtering Approach to Joint Passive Radar Tracking and Target Classification
Thus, we believe that we are the first to provide a joint framework for tracking and classification that realizes the full potential of such an approach. Our joint formulation consists of three key developments: (1) an aerodynamically valid flight model that relies upon aircraft-specific …
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Generalized Passive Radar Processing Chain For Use With Different Signals of Opportunity
A Passive Radar (PR) is a multi-static RAdio Detection and Ranging (radar) that makes use of signals transmitted by Illuminators of Opportunity (IoO)'s to detect targets in a scene. An IoO is any preexisting transmitter that is used as the illuminator for the PR such as Frequency Modulation (FM) …
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PASSIVE RADAR TRACK CLUSTERING: HIGHER FIDELITY OF TARGET IDENTIFICATION AND CLASSIFICATION OF UNLABELED TRACKS
Effective radar signal classification is critical for naval electronic warfare systems like the SLQ-32, but data scarcity limits machine learning applications. This research evaluates semi-supervised learning (SSL) techniques to leverage unlabeled data for improved classification. Using a NIST …
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Time-Modulated Array Testbed Prototype for Multibeam Spectrometry
… and reduce the influence of interference. In the Radar & Microwaves Laboratory at Embry-Riddle, research is being conducted for the applications of passive radar and radio astronomy. As interference is a major threat to both of these applications, interference mitigation is a requirement. More …
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Design and Demonstration of a DAB Based RadCom System
… risk of spectrum bands being reallocated from radar to these applications with organisations such as telecommunication companies willing to pay billions of dollars to use particular bands. Traditionally, this limitation is overcome by the use of passive radar that leverages off of existing …
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Implementation of a DVB-T2 passive coherent locator demonstrator
Passive Coherent Locator (PCL) radar’s have seen extensive research in the past decade. PCL radars utilize illuminators of opportunity (IOO) as transmitters to perform target detection. Particular interests in FM (analogue) and DVB-T/T2, DAB (digital) radio frequency signals has seen significant …
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Doppler-only target tracking for a multistatic radar exploiting FM band illuminators of opportunity
Commensal Radar (CR), defined as a subclass of Passive Radar (PR), is a receive only radar that exploits non-cooperative illuminators of opportunity for target detection, location and subsequent tracking. The objective of this thesis is to evaluate the feasibility of using a Frequency Modulation …
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Antenna systems research
… - Transmission lines and baluns, - High Radar Cross Section Reflectors for Spaceborne Radar Calibration, - Miscellaneous Antenna Investigations. These investigations have resulted in various outcomes: in new antenna types and in improved antenna configurations; in improved techniques for …
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Reduction of a Radar Cross Section Using Active Antenna Elements
… traditional approaches to reducing an object's radar cross section are passive in nature, such as changing the shape of an object or coating the object with a non-reflecting material. Examples of passive applications of traditional approaches to RCS reduction are the Lockheed-Martin F-117 …
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Adaptive Radar with Application to Joint Communication and Synthetic Aperture Radar (CoSAR)
Until recently, the functionality of radar systems has been built into the radar's analog hardware, resulting in radars which are inflexible and that can only be used for a specific application. Modern systems, however, driven by the ever increasing speed of processors and data converters - …
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Využití kmitočtových pásem VKV, UKV, SKV a EKV v leteckých civilních a vojenských radarech (studijní pomůcka)
… SKV a EKV v leteckých civilních a vojenských radarech. Hlavní důraz je kladen především na stručný přehled zadaných kmitočtových pásem pro leteckou komunikaci a rádiovou navigaci. Práce má dále sloužit jako studijní pomůcka pro přípravu profesionálních pilotů a bakalářů leteckého provozu.