Ashok Bhattacharya

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This paper deals with estimation of line of sight rates and angles of evader with respect to pursuer from available noisy active seeker measurements. During terminal guidance, on board seeker of pursuer acquires the required measurements, which are very noisy, non-Gaussian and correlated due to glint, eclipsing and thermal noise. Also there is an aperiodic(More)
In the age of Internet of Things (IoT), enabled by Information and Communication Technology (ICT), small satellites area expected to play a major role as facilitator. The small satellites has further got a fillip on account of the advancement in the field of science and technology of field assisted electron emission which enables the propulsion of such(More)
Reliability and availability of gas turbines are critical to industry as they are used in a variety of applications. It is important to determine the health of these complex systems in near-real time and detect failures as early as possible. Cracks in compressor blades, used in gas turbines, if not detected early, could lead to catastrophic failures that(More)
The effect of KrF excimer laser energy density (below and above the ablation threshold), number of shots and angle of laser incidence on the morphological reconstruction, structure and specular reflectance of Si[311] surfaces is reported. At low energy densities (0.1 to 0.3 J/cm2) laser irradiation results in a variety of nanostructures, depending on laser(More)
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