Rajesh Tiwari

Learn More
The ionosphere is a dispersive medium of charged particles between the satellite and the user on Earth. These dispersive ionized media play a vital role in the various applications of GPS (Global Positioning Systems) because the ionosphere directly influences transionospheric radio waves propagating from the satellite to the receiver. Solar flares affect(More)
The bin packing problem is a combinatorial NP-hard problem. In it, objects of different volumes must be packed into a finite number of bins of capacity V in a way that minimizes the number of bins used. Most of the previous approaches have dealt with one-dimensional cases, only a few with two-dimensional problems and it is very rare to find work on(More)
Twin spool gas turbine engine which is the integral part of the avionics, is a non linear higher order multi input multi output (MIMO) system. Design of tracking controller for turbine engine with the classical techniques is a tedious task and implementation of the complex controller is also an issue. The Basic philosophy of this paper is to design a(More)
In this survey paper we can make use of the heterogeneous system by mapping the tasks and schedule them on different processors so that their finish time can be reduced. Total finish time is time which includes individual runtime of programs and their communication cost among programs. The optimal scheduling of parallel programs is considered as NP-complete(More)
Cloud computing is a paradigm shift over the Internet which provides instant access to software, hardware and computing information resources for use when they needed. Cloud Computing is the access of data, software applications and computer processing power through a “cloud” of online resources. Cloud computing involves storage of user data in the cloud.(More)
In Synthetic Aperture Radar (SAR) image reconstruction, the quality of the image depends on the range and cross range resolution to resolve multiple target positions. If the distance between the targets is less than both SAR resolutions, the radar imaged them as one single target. To overcome this challenge, Orthogonal Frequency Division Multiplexing (OFDM)(More)