Results 61 to 70 of about 752 (176)
Using lightweight denoising network to suppress multiple barrage jamming in range‐Doppler domain
IET Radar, Sonar &Navigation, Volume 18, Issue 11, Page 2308-2324, November 2024.To address the issue of single‐channel radar resisting multiple barrage jamming, this paper proposes a novel jamming suppression framework based on range‐Doppler domain denoising. It also proposes a deep denoising network with a lightweight multi‐resolution encoding and decoding structure.
Minghua Wu +5 more
wiley +1 more source
Mutil-Component LFM Signal Parameter Estimation Method Using STFT And Zoom-FRFT
四川大学学报. 自然科学版, 2016 Traditional parameter estimation methods of multi-component linear frequency modulation (MLFM) signal based on Fractional Fourier transform (FRFT) could solve neither the satisfactory precision nor the lesser computation cost.
SUN Le, ZHANG Heng-Yang, WEI Jun, LIU Li
doaj
IET Radar, Sonar &Navigation, Volume 18, Issue 10, Page 1691-1709, October 2024.This paper proposes a three‐dimensional interferometric inverse synthetic aperture radar imaging algorithm for the ship targets based on the cubic phase signal (CPS) model. This method approximates the azimuth echo signal as a CPS and utilises the particle swarm optimisation algorithm to estimate the higher order phase coefficients.
Junting Yang, Yong Wang
wiley +1 more source
Radar active oppressive interference suppression based on generative adversarial network
IET Radar, Sonar &Navigation, Volume 18, Issue 7, Page 1193-1202, July 2024.An intelligent interference suppression method based on deep learning is proposed. Its interference suppression performance and robustness are better than the existing methods. Abstract Modern radar systems often face various interference signals in complex and rapidly changing electronic environments.
Yongzhi Yu, Yu You, Ping Wang, Limin Guo
wiley +1 more source
Multicarrier digital fractional fourier transform for coherent optical communications [PDF]
, 2017 A new coherent optical transmission system is proposed that makes use of the digital multicarrier fractional Fourier transform to obtain serial optical Nyquist pulses at the receiver side in the time domain by adopting the time-lens effect.
Endri Stoja +7 more
core +1 more source
Electronics Letters, Volume 60, Issue 12, June 2024.Our manuscript introduces a novel method that modifies the normalization process in the fractional Fourier transform (FRFT) domain by incorporating a threshold mechanism to counteract the effects of non‐normal distributions. Additionally, we propose a target detection method that utilizes three new features extracted from this modified FRFT domain ...
Jian Guan +5 more
wiley +1 more source
Image Compression Using Fractional Fourier Transform [PDF]
, 2007 The rapid growth of digital imaging applications, including desktop publishing, multimedia, teleconferencing, and high-definition television (HDTV) has increased the need for effective and standardized image compression techniques. The purpose of image
Kaur, Parvinder
core
Novel short-time fractional Fourier transform: theory, implementation, and applications [PDF]
, 2020 As a generalization of the classical Fourier transform (FT), the fractional Fourier transform (FRFT) has proven to be a powerful tool for signal processing and analysis. However, it is not suitable for processing signals whose fractional frequencies vary
Xiang, Wei +4 more
core +1 more source
IET Signal Processing, Volume 2024, Issue 1, 2024.Multipath interference in radar signals caused by sea, ground, and other environments poses significant challenges to the target detection, tracking, and classification capabilities of radar systems. Existing methods for radar signal identification require labeled samples and focus mainly on the classification of normal signals.
Kang Yan +6 more
wiley +1 more source
The discrete fractional Fourier transform [PDF]
, 1998 Cataloged from PDF version of article.Includes bibliographical references leaves 92-96.In this work, the discrete counterpart of the continuous Fractional Fourier Transform (FrFT) is proposed, discussed and consolidated.
Candan, Çağatay
core