Machine Vision for intelligent Semi-Autonomous Transport (MV-iSAT)

AbstractThe primary focus was to develop a vision-based system suitable for the navigation and mapping of an indoor, single-floor environment. Devices incorporating an iSAT system could be used as ‘self-propelled’ shopping carts in high-end retail stores or as automated luggage routing systems in airports. The primary design feature of this system is its Field Programmable Gate Array (FPGA) core, chosen for its strengths in parallelism and pipelining. Image processing has been successfully demonstrated in real-time using FPGA hardware. Remote feedback and monitoring was broadcasted to a host computer via a local area network. Deadlines as short as 40ns have been met by a custom built memory-based arbitration scheme. It is hoped that the iSAT platform will provide the basis for future work on advanced FPGA-based machine-vision algorithms for mobile robotics

MIPI Display Serial Interface Interoperability Tests

The increasing demand of mobile devices, with better and faster peripherals, leads to a need of developing new products based on the most recente protocols by the silicon industry companies. One of the companies with a larger role in the silicon industry is Synopsys. Synopsys is one of the biggest IP producers (Intellectual Property) in the world, offering its clients a large set of components based on the leading protocols on the market such as: USB, MIPI, HDMI, DDR, SATA, Ethernet, PCIe etc. In this thesis framework were developed two projects regarding MIPI DSI (Display Serial Interface) specification in which is proposed to use Synopsys DSI Host controller to validate the behaviour of two physical layers (PHY). One of the projects has as target test one of Synopsys new PHYs in order to validate its performance on a protocolar level. The other project refers to the protocolar validation of a client PHY that ordered Synopsys services to test it. To validate both physical layers and accomplish the project goals, both projects passed through the stages of: design development, simulations, Synthesis + P&R (Place and Route) and hardware tests.O aumento da procura de dispositivos m´oveis com periféricos melhores e mais rápidos, leva `a necessidade de se desenvolverem novos produtos baseados nos mais recentes protocolos por parte das companhias tecnológicas. Uma das empresas com maior papel na industria do silício é a Synopsys. A Synopsys é uma das maiores produtoras de IP (do anglo-saxónico Intellectual Property, propriedade intelectual em português) oferecendo aos seus clientes uma enorme gama de componentes baseados nos protocolos líderes de mercado tal como: USB, MIPI, HDMI, DDR, SATA, Ethernet, PCIe entre outros. No enquadramento desta dissertação surgem dois projectos, ligados à especifica¸c˜ao MIPI DSI (Display Serial Interface) nos quais ´e proposto utilizar o controlador DSI Host, desenvolv´ıdo pela Synopsys, para validar o funcionamento de duas camadas físicas (PHY). Um dos projectos tem como alvo testar um dos novos PHY desenvolvidos na Synopsys de forma a validar o seu comportamento e desempenho a nível protocolar. O outro projecto remete a uma valida¸c˜ao protocolar de um PHY desenvolvido por um cliente que requisitou os serviços da Synopsys para o testar. Para efectuar esta validação, ambos os projectos passam pelas fases de: desenvolvimento do projecto, simulações, Síntese + P&R (Place and Route) e testes em hardware

IF-MANET: Interoperable framework for heterogeneous mobile ad hoc networks

The advances in low power micro-processors, wireless networks and embedded systems have raised the need to utilize the significant resources of mobile devices. These devices for example, smart phones, tablets, laptops, wearables, and sensors are gaining enormous processing power, storage capacity and wireless bandwidth. In addition, the advancement in wireless mobile technology has created a new communication paradigm via which a wireless network can be created without any priori infrastructure called mobile ad hoc network (MANET). While progress is being made towards improving the efficiencies of mobile devices and reliability of wireless mobile networks, the mobile technology is continuously facing the challenges of un-predictable disconnections, dynamic mobility and the heterogeneity of routing protocols. Hence, the traditional wired, wireless routing protocols are not suitable for MANET due to its unique dynamic ad hoc nature. Due to the reason, the research community has developed and is busy developing protocols for routing in MANET to cope with the challenges of MANET. However, there are no single generic ad hoc routing protocols available so far, which can address all the basic challenges of MANET as mentioned before. Thus this diverse range of ever growing routing protocols has created barriers for mobile nodes of different MANET taxonomies to intercommunicate and hence wasting a huge amount of valuable resources. To provide interaction between heterogeneous MANETs, the routing protocols require conversion of packets, meta-model and their behavioural capabilities. Here, the fundamental challenge is to understand the packet level message format, meta-model and behaviour of different routing protocols, which are significantly different for different MANET Taxonomies. To overcome the above mentioned issues, this thesis proposes an Interoperable Framework for heterogeneous MANETs called IF-MANET. The framework hides the complexities of heterogeneous routing protocols and provides a homogeneous layer for seamless communication between these routing protocols. The framework creates a unique Ontology for MANET routing protocols and a Message Translator to semantically compare the packets and generates the missing fields using the rules defined in the Ontology. Hence, the translation between an existing as well as newly arriving routing protocols will be achieved dynamically and on-the-fly. To discover a route for the delivery of packets across heterogeneous MANET taxonomies, the IF-MANET creates a special Gateway node to provide cluster based inter-domain routing. The IF-MANET framework can be used to develop different middleware applications. For example: Mobile grid computing that could potentially utilise huge amounts of aggregated data collected from heterogeneous mobile devices. Disaster & crises management applications can be created to provide on-the-fly infrastructure-less emergency communication across organisations by utilising different MANET taxonomies

ATS-4 study program, volume 7 Final report

Direct phase reading X-band radio interferometer for attitude control of Applications Technology Satellite-

Conceptual mechanization studies for a horizon definition spacecraft communications and data handling subsystem

Conceptual mechanization for horizon definition spacecraft communications and data handling subsyste

Voice Broadcast Mission Study /VMBS/ Volume 2 - Study report Final report

Voice broadcasting mission stud

Precise SAR Measurements In The Near-Field of RF Antenna Systems

Wireless devices must meet specific safety radiation limits, and in order to assess the health affects of such devices, standard procedures are used in which standard phantoms, tissue-equivalent liquids, and miniature electric field probes are used. The accuracy of such measurements depend on the precision in measuring the dielectric properties of the tissue-equivalent liquids and the associated calibrations of the electric-field probes. This thesis describes work on the theoretical modeling and experimental measurement of the complex permittivity of tissue-equivalent liquids, and associated calibration of miniature electric-field probes. The measurement method is based on measurements of the field attenuation factor and power reflection coefficient of a tissue-equivalent sample. A novel method, to the best of the author's knowledge, for determining the dielectric properties and probe calibration factors is described and validated. The measurement system is validated using saline at different concentrations, and measurements of complex permittivity and calibration factors have been made on tissue-equivalent liquids at 900MHz and 1800MHz. Uncertainty analysis have been conducted to study the measurement system sensitivity. Using the same waveguide to measure tissue-equivalent permittivity and calibrate e-field probes eliminates a source of uncertainty associated with using two different measurement systems. The measurement system is used to test GSM cell-phones at 900MHz and 1800MHz for Specific Absorption Rate (SAR) compliance using a Specific Anthropomorphic Mannequin phantom (SAM)