Results 31 to 40 of about 8,149 (274)
Parameter Estimation of LFM Signal in Low Signal-to-Noise Ratio Using Cross-Correlation Function
Advances in Electrical and Electronic Engineering, 2021 The pulse with intra-pulse modulation plays an important role in the design of radar systems. The first class of the signals type is the linear frequency modulation technique.
Minh Van Duong +4 more
doaj +1 more source
Direction finding of correlated sources in extremely low SNR environment [PDF]
Journal of Engineering Science and Military TechnologiesDirection-Finding (DF) in low Signal-to-Noise Ratio (SNR)environments presents challenges in accurate Angle-of-Arrival (AOA)estimation, resolution, and maximum detection range due to extrinsicsources and hardware imperfections, particularly when dealing ...
Osama Elkasrawi +3 more
doaj +1 more source
Prospects of FMCW-based frequency diverse array radar
The Journal of Engineering, 2019 The linear frequency modulated (LFM) frequency modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is investigated in detail. The radar operates as a linear pulsed FMCW/FDA in the transmission (TX) mode while it operates as
Ramazan Çetiner +3 more
doaj +1 more source
Mathematical analyses of the GPS receiver interference tolerance and mean time to loss lock
Defence Technology, 2019 In this paper, novel mathematical expressions are derived for the Global Positioning System (GPS) receiver interference tolerance in the presence of different types of interference signals such as: continuous wave interference, narrowband interference ...
Ehab M. Shaheen, Sherif A. Elgamel
doaj +1 more source
The Power Gain Difference Method Analysis
Sensors, 2020 In this paper, we propose a new approach to passively locate the 3D position of a signal source. This novel technique, called the power gain difference (PGD), is based only on measuring the received signal strength (RSS) with multiple sensors deployed in
Jiří Veselý +2 more
doaj +1 more source
IET Networks, EarlyView., 2022 Abstract 3D scanning is rapidly becoming a key maintenance tool. Aerospace was a pioneer in adopting 3D scanning technology because aircraft manufacture and maintenance require precision. Monitoring deterioration, removing components for maintenance, and verifying covert operations are not practical or helpful without technology.
T. Nanthakumaran Thulasy +4 more
wiley +1 more source
Applied Sciences, 2022 In this work, we present a method for designing a dielectric lens with a reduced height that is easily printed with one-take 3D printing. For the first time, we prove that the configuration of a printout made of resin material can be modified for ...
Wonkyo Kim +4 more
doaj +1 more source
PUGTIFs: Passively User-Generated Thermal Invariant Features
IEEE Access, 2019 Feature detection is a vital aspect of computer vision applications, but adverse environments, distance and illumination can affect the quality and repeatability of features or even prevent their identification. Invariance to these constraints would make
Edward Jackson, Lounis Chermak
doaj +1 more source
Advances in Electronic Warfare [PDF]
, 2021 Electronic warfare (EW) is any military action involving the use of electromagnetic and directed energy to control the electromagnetic spectrum or to attack the enemy.
Saalbach, Klaus
core
Development of a Remote-Controlled Electrical Interference Vehicle with a Magnetron
Sensors, 2020 This paper describes the design and construction of a remotely controlled mobile interference device designed primarily for interference (jamming) and immunity testing of wireless sensors operating in the 2.4 GHz band (Wi-Fi).
Miroslav Popela +3 more
doaj +1 more source