Frequency domain zero padding for accurate autofocusing based on digital holography

2018 ◽  
Vol 72 (1) ◽  
pp. 57-65 ◽  
Author(s):  
Jun Geun Shin ◽  
Ju Wan Kim ◽  
Tae Joong Eom ◽  
Byeong Ha Lee
Keyword(s):  
Frequency Domain ◽  
Digital Holography ◽  
Zero Padding

Accurate reconstruction of digital holography using frequency domain zero padding

2017 ◽  
Author(s):  
Jun Geun Shin ◽  
Ju Wan Kim ◽  
Jae Hwi Lee ◽  
Byeong Ha Lee
Keyword(s):  
Frequency Domain ◽  
Digital Holography ◽  
Zero Padding ◽  
Accurate Reconstruction

scholarly journals Signal and zero padding to improve parameters estimations of sinusoidal signals in the frequency domain

ACTA IMEKO ◽  
2016 ◽  
Vol 5 (3) ◽  
pp. 47
Author(s):  
Dusan Agrez ◽  
Damir Ilic ◽  
Janko Drnovsek
Keyword(s):  
Frequency Domain ◽  
Sampling Interval ◽  
Sinusoidal Signal ◽  
Measurement Interval ◽  
Signal Sampling ◽  
Zero Padding ◽  
Signal Average ◽  
Signal Parameters ◽  
Average Sampling ◽  
Sampled Signal

<p class="Abstract"><span lang="EN-US">This paper presents the procedure to improve the estimation of the basic sinusoidal signal parameters (frequency, amplitude, and phase, respectively)</span><span lang="EN-US"> in the case of signal sampling by averaging in the aperture time. Prior to estimation in the frequency domain by the interpolated DFT algorithms the sampled signal is padded with the signal average values in the aperture times and zeroes in the rest of the sampling interval. We can increase padding points and a number of the signal cycles in the whole measurement interval and with this nearing the errors to the level as with estimation of the signal without average sampling even the sampling Nyquist condition is not fulfill.</span></p>

Frequency Domain Equalizer Using Zero-padding for IR-UWB Systems

2007 ◽  
Author(s):  
Sujin Kim ◽  
Keonkook Lee ◽  
Jongsub Cha ◽  
Joonhyuk Kang ◽  
Naesoo Kim ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Zero Padding

Correction to "The analysis of slug tests in the frequency domain" (WRR 25(11), pp. 2388-2396

1990 ◽  
Vol 26 (8) ◽  
pp. 1863-1863
Author(s):  
Paul Marschall ◽  
Baldur Barczewski
Keyword(s):  
Frequency Domain ◽  
Slug Tests

Methods of calibration of high-resolution optical reflectometers operating in the frequency domain

2018 ◽  
pp. 40-43
Author(s):  
V.V. GRIGORIEV ◽  
◽  
V.E. KRAVTSOV ◽  
A.K. MITUEV ◽  
E.A. MOROZ ◽  
...  
Keyword(s):  
High Resolution ◽  
Frequency Domain
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