Development of Optimal Thresholding Technique for Shape and Size Detection for Through the wall Radar Imaging System

Through-the-wall radar (TWR) images of stationary target behind a wall are subject to strong stationary and non-stationary clutter which obscures the target position and size in the image. Stationary clutters are present due to strong reflection from the wall and non-stationary clutter occurs due to multipath, noise, etc. A lot of work has been reported for mitigating stationary clutter successfully for various real scenarios. However, for mitigating nonstationary clutter various authors have reported their work in this field but any concrete result has not been reported so far. Hence, there is a need for an optimal methodology to mitigate non-stationary clutter in TWR images for achieving a high-quality image representing the target position, shape and its size. Till now it is difficult to achieve shape detection of the target from the TWR system. Therefore, in this paper, a novel optimal thresholding technique is proposed to mitigating non-stationary clutter for further enhancement on shape detection of a target using curve fitting and genetic algorithm. The proposed methodology gives a satisfactory result and can prove to be a powerful technique for minimising clutter

Flexible Service Oriented Network Architecture for Wireless Sensor Networks

Wireless Sensor Network (WSN) is a combination of homogeneous andheterogeneous sensor nodes which are physically deployed at different places. HeterogeneousWSM can be characterized with different parameters such as hardwareresources, application, services, software platform and network. WSN are powerfultechnology, which is used to build up many applications in the era of technologicaldevelopment. These developments demand homogeneous or heterogeneous services asper the user requirements at applications level. The requirement results in increasingthe number of services over the network and hence the number of complexities.Complexities of wireless sensor networks are increasing due to the lack of adoption ofnew services, new protocols and interoperability between heterogeneous services withcommon communication architecture. This paper deals with these issues of wirelesssensor networks, elaborating the need of generalized communication architecture forapplications, developers and users, proposing generalized Flexible Service OrientedNetwork Architecture (FSONA) to solve above issues along with the detailed functionalityof the proposed architecture

Introduction to Advanced Combustion Techniques and Engine Technologies for Automotive Sector

To resolve the transportation sector issues such as rapidly increasing petroleum consumption and stringent emission norms for vehicles, researchers have proposed three solution strategies namely advanced combustion techniques, after-treatment systems and alternative fuels. This book covers all three aspects for automotive sector. A dedicated section of this book is based on methanol, which discusses about the methanol utilization strategies in vehicles, especially in two wheelers. Second section of this book is based on advanced combustion techniques, which includes gasoline compression ignition (GCI), gasoline direct injection (GDI), and spark assisted compression ignition (SACI). Fourth section is based on emissions and after treatments systems. Last section of this book includes two different aspects. First is the vehicle lightweighting and second is the development of UAVs for defence applications. Overall this book emphasizes on different techniques, which can improve engine efficiency and reduce harmful emissions for a sustainable transport system