Samir Hussain Abdul-Jauwad

King Fahd University of Petroleum and Minerals | KFUPM · Department of Electrical Engineering and Department of Environment, Health and Safety

Wireless channel prediction and impairment estimations have always been a popular area for research. Therefore, a composite model for channel induced impairments on satellite communication systems operating at frequencies above 10 GHz has been presented in this paper. Such systems show a high dependency on varying propagation characteristics due to...

Satellite telecommunications today present one of the most remarkable opportunities as they enable us to communicate and virtually reach any corner of the world. Great discoveries and developments in this field have enabled us to improve our quality of life. But even as we benefit from this progress, many challenges are encountered as satellite ser...

Dust and sand storms are regarded as a complex meteorological phenomenon due to high degree of uncorrelated features. Dust particles size distribution, their dielectric constants, visibility level during dusty weather and probable dust storm height are namely a few significant parameters required in modeling the dust storms mathematically. An optim...

Technology is improving rapidly. One of the most revolutionary communication technologies that appears to be convincing and efficient is called High Altitude Platform (HAP). As any other wireless communication system, a main degrading factor of HAP Station (HAPS) propagation channel in desert and semi-desert areas is the dust storm attenuation. Thi...

Dust storms are a significant cause of wireless channel impairments, often observed in arid and semi-arid areas of the world. Measurement of weather induced impairments is an essential component for evaluating optimal link budgets of satellite communication links. Study of regional surface characteristics gives necessary information about probable...

The objective of this research is to design and implement a new technique for side information generation and compare the results of this technique with the existing such methods of side information especially the method proposed by Xavi Artigas to check any improvements. In order to achieve this objective both the available and proposed techniques...

The objective of this research is to design and implement a new technique for side information generation and compare the results of this technique with the existing such methods of side information especially the method proposed by Xavi Artigas to check any improvements. In order to achieve this objective both the available and proposed techniques...

Augmenting accurate prediction of channel attenuations can be of immense value in improving the quality of signals athigh frequency for satellite communication networks. Such prediction of weather related attenuation factors for the impendingweather conditions based on weather data and Markov theory are the main object of this paper. The paper also...

Traditionally two frames are used to estimate the 3-D structure, while recent approaches have made use of a long sequence of frames. The latter gives a better recovery of a structure because it amasses temporal information over time. Tomasi-Kanade factorization also assumes all features to be visible throughout the entire image stream. This results...

Traditionally two frames are used to estimate the 3-D structure, while recent approaches have made use of a long sequence of frames. The latter gives a better recovery of a structure because it amasses temporal information over time. Tomasi-Kanade factorization also assumes all features to be visible throughout the entire image stream. This results...

In earlier literature mostly two frames were used to estimate the 3-D structure, while recent approaches make use of a long sequence of frames. The latter gives a better recovery of structure because it amasses temporal information over time instants. Tomasi-Kanade factorization also assumes all features to be visible in the entire image stream. Th...

As we go “back to university” with this issue of Computer Science or Engineering Today, it may be useful to reflect on what we are going to school for [1]. For students, university usually means gainful employment and for their instructors/universities it means, or at least it should mean, getting their students employed. But what do employers want...

Regular region based segmentation approaches utilize color or intensity information to distinguish between different regions. The performance of such procedures is acceptable for man-made objects, since they mainly consist of regular shapes and smooth surfaces. Most natural objects such as mountains, trees or clouds on the other hand are typically...

An advanced seismic compression technique is proposed to mange seismic data in a world of ever increasing data volumes in order to maintain productivity without compromising interpretation results. A separable 3D discrete wavelet transform using long biorthogonal filters is used. The computation efficiency of the DWT is improved by factoring the wa...

In this paper, a sophisticated adaptive seismic compression method is presented based on wavelet shrinkage. Our approach combines a time-scale transform with an adaptive non-linear statistical method. First, a discrete 2-D biorthogonal discrete wavelet transform (DWT) is applied to the multi-channel seismic signals to generate a sparse multiresolut...

Ground roll is a surface wave energy that propagates along and near the surface with relatively low velocity, often with low frequency, and usually with high amplitudes relative to other events of interest in land seismic surveys. The conventional wave-number (f-k) filtering which is based on the 2-D Fourier transform is not suitable to remove such...

In this paper a Polaroid Rangefiniding Sonar Modeule is interfaced to an Inmos compatible link using an Inmos C011 link adapter. An OCCAM interface is used fro timing the sonar pulses. The design allows the Transputer to measure distances to an accuracy of the tenth of the an inch. The sonar is useful in many applications as detecting objects for a...

An ASK digital underwater acoustic communications system has been designed and tested to investigate the influence of error correcting codes on the performance of the system. The underwater communications channel is a multi-path fading channel and has been modelled accordingly, and the error probability was estimated under varying operating conditi...

In this study a model predicting the electromagnetic wave propagation has been developed. The model is initialized with a known refractivity profile and an initial transmitted field. The troposphere is assumed to be inhomogeneous in height and range. The vertical refractivity profile is computed from the meteorological upper air data. Arbitrary as...

A quad array acoustic imaging system used in underwater applications is discussed. In this configuration, a 2 N -element crossed array results in an effective data aperture equivalent to that of a N ² filled array. The underwater images of corner reflectors, wooden rods, and a planar letter E at an ultrasonic frequency of 152 kHz have sh...

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A new configuration for the acquisition of data in long-wavelength imaging systems is described and is shown to optimise the data collection capabilities of the aperture used. The feasibility of the approach has been demonstrated at a free-space ultrasonic frequency of 40 kHz and typical imagery is presented.