Amartya Mukherjee

Unmanned aerial system for post disaster identification

This work mainly emphasize on the ongoing research of the design of an unmanned aerial system for handling of post disaster scenario, effectively. Normally the civilian unmanned aerial vehicles suffers from the restriction of line of sight communication but here a high altitude aerial platform has been introduced which acts as a signal repeater. Thus, it virtually enhances the Fresnels zone of the wireless transmitter. An initial test platform is developed to realize the data communication between the UAV and the ground station within a certain range of way-points as well as basic image mosaic generation is performed using time stamped image data.

Intelligent Traffic Monitoring System

Traffic congestion in cities is a major problem mainly in developing countries; to encounter this, many models of traffic system have been proposed by different scholars. Different ways have been proposed to make the traffic system smarter, reliable, and robust. This paper presents the various approaches made to enhance the traffic system across the globe. A comparative study has been made of different potential researches in which intelligent traffic system (ITS) emerges as an important application area. Important key points of each research are highlighted and judged on the basis of implementing them in developing countries like India. A model is also proposed which uses infrared proximity sensors and a centrally placed microcontroller and uses vehicular length along a length to implement intelligent traffic monitoring system.

Study of Wireless Communication Through Coal Using Dielectric Constant

Dielectric constant is an important parameter having a wide range of applications in satellite and terrestrial communication, wireless communication especially for GPS, environmental monitoring and ground penetrating radar (GPR) surveys. It controls vertical and horizontal imaging, resolution, propagation velocity of electromagnetic waves through material, and reflection coefficients across interfaces of different materials. Although the communication process gets disrupted due to lower penetration ability of Electromagnetic Wave. High dielectric constant of the medium, low frequency and attenuation constant of EM wave etc. are main culprits of this disruption. Hence, in order to find a solution to this problem, four modeled coal samples of variable porosity, mineralogy, and saturation are taken. It is observed that the bulk dielectric constant generally varies from 2 to 38 in the materials modeled. The decrease in dielectric constant with increase in frequency is mainly due to polarization of polar molecule and non-polar molecule of coal under the influence of extra electric field. Hence, in order to receive the reflected EM waves above background noise, the dielectric constant of the material medium must be greater than 2.

Dynamic Analysis of Two-Link Robot Manipulator for Control Design

Robot manipulators have become a major component in the manufacturing sectors which are utilized in several applications such as grinding, welding, assembling, and mechanical handling due to quite efficient accuracy, speed, and repeatability. These applications require proper path planning, proper generation of trajectory, and most importantly a control design. This work deals with the problem of modeling and control of a two-link robot manipulator which is a classical and simple example of robot followed in understanding the fundamentals of robotic manipulator. Since, the closed form solutions are not available so we use numerical solution. Due to these uncertainties and nonlinear behavior, it is a very difficult task to control the motion of the robotic arm at the accurate position. Here, we are focused on designing and implementation of PID controller to control the motion of the robot arm. MATLAB has been used to carry out simulation after derivation of necessary equations.

Flying Ad hoc Networks: A Comprehensive Survey

An ad hoc network is the cooperative disposition of a collection of dynamic (mobile) nodes without the necessity of existing infrastructure or any centralized access points. Recently, ad hoc networks have aroused great scientific curiosity and have led to wide-scale research works into this field. In this paper, we provide a complete survey on Flying Ad hoc Networks (FANETS) as an emerging field among Mobile Ad hoc Networks (MANETS) and Vehicular Ad hoc Networks (VANETS). FANET implies creating an ad hoc network between multi-UAV systems, which is connected to the base station. The base station can be remotely ground based or an aircraft. In FANET, communication between UAVs is dependent on node mobility and topological changes. In this paper, we provide a comprehensive survey of the design issues, communication methodologies, and routing protocols of UAVs with open research issues.