Results 61 to 70 of about 138,884 (189)
Computation of scalar far-field patterns of large-aperture antennas [PDF]
In computer programs used for evaluating the performance of high-gain antennas, efficient numerical methods for calculating the far-field patterns must be used since the majority of computer time and storage requirements may be attributed to this phase ...
Omalley, T. A.
core +1 more source
Analisis Pengaruh Misalignment Terhadap Vibrasi Dan Kinerja Motor Induksi [PDF]
, 2011 Vibration caused by misalignment of induction motor is detected by using Micro-Electro-Mechanical System (MEMS) and piezoelectric sensor. Measurement is done with alignment and misalignment.
Ulfiana, A. (Andi)
core
Pricing Embedded Options Using Fast Fourier Transform to Compare Variance Gamma and Black-Scholes-Merton Model Efficiency [PDF]
Iranian Journal of FinanceEmbedded options are virtually new instruments identical to options in many aspects except their non-tradable nature. Testing the efficiency of the Variance Gamma and Black-Scholes-Merton model on these instruments would provide a vision of transitioning
Alireza Barati, Maryam Khalili Araghi
doaj +1 more source
Simulasi Sistem Pengacak Sinyal Dengan Metode FFT (Fast Fourier Transform)
Jurnal Teknik Elektro dan Komputer, 2014 Abstract--In the world of engineering, signals is a magnitude that changed by the time and space as well as bring some information. According to the ITU ( International Telecommunication Union), the signal is a physical phenomenon in which one or more of its characteristics typify information.
Sipasulta, Reonaldo Y. +2 more
openaire +2 more sources
QFM Signals Parameters Estimation Based on Double Scale Two Dimensional Frequency Distribution
IEEE Access, 2019 This paper proposes a novel estimation method, named double scale two dimensional frequency distribution (DSTFD), to estimate the parameters of quadratic frequency modulated (QFM) signals.
Fulong Jing +4 more
doaj +1 more source
BER IMPROVEMENT OF WIRELESS LAN IEEE 802.11 STANDARD USING WAVELET PACKET TRANSFORMS [PDF]
ICTACT Journal on Communication Technology, 2012 High data rates and spectral efficiency is the main requirements for wireless communication systems. Orthogonal Frequency Division Multiplexing (OFDM) is a special form of multi carrier transmission used to achieve high data rates of the various WLAN ...
Sanjeev Kumar
doaj
Wide-bandwidth high-resolution search for extraterrestrial intelligence [PDF]
Research accomplished during the third 6-month period is summarized. Research covered the following: dual-horn antenna performance; high electron mobility transistors (HEMT) low-noise amplifiers; downconverters; fast Fourier transform (FFT) array; and ...
Horowitz, Paul
core +1 more source
IEEE Access, 2018 This paper focuses on the range migration (RM) and Doppler frequency migration corrections of the long-time coherent integration, and a fast algorithm is proposed for maneuvering target detection and motion parameters estimation under a low signal-to ...
Jibin Zheng +4 more
doaj +1 more source
Vibration-based Fault Diagnostic of a Spur Gearbox
MATEC Web of Conferences, 2016 This paper presents comparative studies of Fast Fourier Transform (FFT), Short Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT) as several advanced time-frequency analysis methods for diagnosing an early stage of spur gear tooth ...
Hartono Dennis +3 more
doaj +1 more source
Jurnal Nasional Teknik Elektro, 2016 Indonesia is one of the agricultural country that produces crops. Nevertheless, Indonesia still imports rice from other countries because of crop decreasement. One of its factors is caused by bird pests.
Fajar Budiman +3 more
doaj +1 more source