Every user appreciates the security of their data irrespective of its sensitivity. At the same time, user does not want to be held up with the legacy systems, which may be strongly secured but not with fantasy. Network travelled many phases of its own such as internet, intranet, wireless network, sensor network, Ad-hoc network, Mobile network, Blue-tooth, Cloud and IoT, the most popular techniq...

Canada’s RADARSAT-2 commercial synthetic aperture radar (SAR) satellite will have an experimental mode that will permit ground moving target indication (GMTI) measurements to be made. In this mode of operation, the radar antenna is partitioned into two subapertures that sequentially observe the scene of interest from the same point in space. Two of the GMTI processing approaches currently being...

This article investigates channel phase mismatch calibration during the application of displaced-phase-center antenna (DPCA) in dual-channel sliding spotlight synthetic aperture radar (SAR) for ground moving target indication (GMTI). In SAR, utilization beam progressive sweeping azimuth causes centers to be misaligned from sensor path, resulting between channels. Then, spatial co-registration r...

Abstract To improve the fire safety of epoxy resin (EP), two novel phosphorus–nitrogen flame retardants, which named as diphenyl allylphosphoramidate (DPCA) and N-allyl-P, P-diphenylphosphinic amide (DCA), were synthesized by acyl chloride reaction introduced into EP for fabricating composites. The combustion tests showed that incorporation 5 wt% DPCA or DCA led to exceptional limited oxygen in...

detecting anomalies is an important challenge for intrusion detection and fault diagnosis in wireless sensor networks (wsns). to address the problem of outlier detection in wireless sensor networks, in this paper we present a pca-based centralized approach and a dpca-based distributed energy-efficient approach for detecting outliers in sensed data in a wsn. the outliers in sensed data can be ca...

Abstract A novel Dynamic Kernel PCA (DKPCA) method is developed for process monitoring in nonlinear dynamical systems. Classical DKPCA approaches still exhibit vague linearity assumptions to determine the number of principal components and construct structure. The optimal Static (SPCA) (DPCA) structures are constructed herein through powerful theory Fractal Dimension (FDim). While offers a gene...

Standard SAR-processing methods are based upon the assumption of a static scene. If targets are moving, their positions in the SAR-image are translated in azimuth and defocusing may occur. In this paper, some methods for the detection and imaging of moving targets and the estimation of their real positions are discussed, such as monopulse and DPCA. Experimental results are shown on correction o...