A review–unguided optical communications: Developments, technology evolution, and challenges

AAB Raj, P Krishnan, U Darusalam, G Kaddoum… - Electronics, 2023 - mdpi.com
This review paper discusses the complete evolution of free-space optical (FSO)
communication, also known as unguided optical communication (UOC) technologies, all the …

Historical perspective of free space optical communications: from the early dates to today's developments

AB Raj, AK Majumder - Iet Communications, 2019 - Wiley Online Library
This survey article discusses the revolutions of wireless communication technologies right
from the prehistoric man's fire signals to today's space optical communications. A brief …

Extraction of Doppler signature of micro‐to‐macro rotations/motions using continuous wave radar‐assisted measurement system

HC Kumawat, A Bazil Raj - IET Science, Measurement & …, 2020 - Wiley Online Library
Mechanical–structural vibration and/or rotational parts of the targets will induce micro‐
Doppler frequency in addition to the main Doppler components. In the today's military era …

[图书][B] FPGA-based embedded system developer's guide

AAB Raj - 2018 - taylorfrancis.com
The book covers various aspects of VHDL programming and FPGA interfacing with
examples and sample codes giving an overview of VLSI technology, digital circuits design …

Data acquisition and signal processing system for CW Radar

HC Kumawat, AB Raj - 2019 5th International Conference On …, 2019 - ieeexplore.ieee.org
The purpose of this work to develop simple and effective data acquisition and signal
processing algorithm for radar system. Except hardware, data acquisition and signal …

Intelligent System for Real time detection and classification of Aerial Targets using CNN

M Upadhyay, SK Murthy… - 2021 5th International …, 2021 - ieeexplore.ieee.org
The advancements in drone technology has led to increased usage of drones in civil and
military which poses significant security related challenges. The small size of drones and …

Detection and classification of UAV using propeller Doppler profiles for counter UAV systems

J Mazumder, AB Raj - 2020 5th International Conference on …, 2020 - ieeexplore.ieee.org
The purpose of this paper is to develop an electronic system which detects and classifies an
Unmanned Aerial Vehicle (UAV). For detection and classification of a target UAV, an X Band …

Beam steering and control algorithm for 5-18ghz transmit/receive module based active planar array

M Maddegalla, AAB Raj, GS Rao - … International Conference on …, 2020 - ieeexplore.ieee.org
With the advent of Active Electronically Scanned Array (AESA) technology in the design and
development of advanced multi-target handling Radar and Electronic Warfare (EW) systems …

Estimation of heart rate and respiratory rate using imaging photoplethysmography technique

N Singh, AAB Raj - 2020 International Conference on System …, 2020 - ieeexplore.ieee.org
Imaging-Photoplethysmography has gathered a great amount of recognition in recent
decades given to its simple, cost effective and non-contact multiparameter measurement …

Review of fibreless optical communication technology: History, evolution, and emerging trends

N Patle, AB Raj, C Joseph, N Sharma - Journal of Optical …, 2024 - degruyter.com
In the present era of technology, it is quite fascinating to design a system capable of
transmitting information from one end to another by using the optical spectrum. This system …