Готові списки джерел за темами / Spatial interference filtering

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Добірка наукової літератури з теми "Spatial interference filtering"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Spatial interference filtering"

Dai, Huan Yao, Xue Song Wang, and Yong Zhen Li. "Spatial Virtual Polarization Filter Design for Radar Sensor." Advanced Materials Research 239-242 (May 2011): 768–72. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.768.

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As interferences are introduced from main-lobe direction which results in tar-get signal are masked by interference, traditional adaptive beam-forming can not suppress main-lobe interferences effectively. Polarization filtering is a main method to suppress the interference in radar and other sensor systems. Based on the spatial polarization characteristic (SPC) of antenna, a spatial virtual polarization filter (SVPF) is proposed by constructing polarization decomposition and polarization estimation of the received signal. A generalized construction method of SVPF is provided, the performance o

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Walborn, S. P., P. H. Souto Ribeiro, and C. H. Monken. "Interference effects induced by non-local spatial filtering." Optics Express 19, no. 18 (2011): 17308. http://dx.doi.org/10.1364/oe.19.017308.

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Raza, J., A. J. Boonstra, and A. J. van der Veen. "Spatial filtering of RF interference in radio astronomy." IEEE Signal Processing Letters 9, no. 2 (2002): 64–67. http://dx.doi.org/10.1109/97.991140.

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Wang, Hao, Qing Chang, and Yong Xu. "An Anti-Jamming Null-Steering Control Technique Based on Double Projection in Dynamic Scenes for GNSS Receivers." Sensors 19, no. 7 (2019): 1661. http://dx.doi.org/10.3390/s19071661.

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When a global navigation satellite system (GNSS) receiver suppresses interference in a dynamic scene, the direction of the interference signal arriving at the receiver may change rapidly. The null formed by the spatial filtering based on the array antenna will become wider and shallower, and the anti-jamming performance will deteriorate. A null-steering control technique based on a dual projection algorithm is proposed in this paper, which can effectively increase the depth of the null. In this paper, the dynamic model between the interference and the receiver is established first. Based on th

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Kochetkov, Anton, Mikhail Martyanov, Vladislav Ginzburg, and Efim Khazanov. "Self-filtering of beam fluence fluctuations at free space propagation." Laser Physics Letters 20, no. 6 (2023): 065001. http://dx.doi.org/10.1088/1612-202x/accf74.

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Abstract It is shown theoretically and experimentally that free space propagation in vacuum provides self-filtering of beam fluence fluctuations (spatial small-scale noise). The linear interference of the noise and the primary smooth beam during the propagation results in temporal filtering invoked by the noise pulse delay with respect to the primary beam pulse and in spatial filtering caused by the noise spatial walk-off from the aperture of the primary beam.

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Sheng, Xueli, Xiaoyi Sun, Yali Shi, Longxiang Guo, and Dian Lu. "Strong direct path interference suppression based on spatial filtering." Journal of the Acoustical Society of America 140, no. 4 (2016): 3449. http://dx.doi.org/10.1121/1.4971139.

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Shevchenko, M. E., V. N. Malyshev, A. V. Gorovoy, and A. S. Cherepanov. "Spatial Filtering of Signals under Imprecise Calibration of Antenna Arrays." Journal of the Russian Universities. Radioelectronics 26, no. 6 (2023): 27–40. http://dx.doi.org/10.32603/1993-8985-2023-26-6-27-40.

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Introduction. Spatial filtering of signals is performed for the selection the signals of interest when the signals spectra overlap. The quality of spatial filtering depends on the accuracy of antenna array (AA) calibration, which allows estimation of the amplitude-phase distribution (APD) at all possible directions of arrival, thus ensuring the identity of reception paths. A mismatch between the actual and measured APD values leads to quality degradation in all spatial filtering methods.Aim. To develop a method for improving the quality of signal spatial filtering based on the estimates of the

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Zhou, Yi, Haiping Wang, Yijing Chu, and Hongqing Liu. "A Robust Dual-Microphone Generalized Sidelobe Canceller Using a Bone-Conduction Sensor for Speech Enhancement." Sensors 21, no. 5 (2021): 1878. http://dx.doi.org/10.3390/s21051878.

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The use of multiple spatially distributed microphones allows performing spatial filtering along with conventional temporal filtering, which can better reject the interference signals, leading to an overall improvement of the speech quality. In this paper, we propose a novel dual-microphone generalized sidelobe canceller (GSC) algorithm assisted by a bone-conduction (BC) sensor for speech enhancement, which is named BC-assisted GSC (BCA-GSC) algorithm. The BC sensor is relatively insensitive to the ambient noise compared to the conventional air-conduction (AC) microphone. Hence, BC speech can b

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Alaei, Masoud Abbasi, Sajad Golabighezelahmad, Pieter-Tjerk de Boer, Frank E. van Vliet, Eric A. M. Klumperink, and Andre B. J. Kokkeler. "Interference Mitigation by Adaptive Analog Spatial Filtering for MIMO Receivers." IEEE Transactions on Microwave Theory and Techniques 69, no. 9 (2021): 4169–79. http://dx.doi.org/10.1109/tmtt.2021.3081110.

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Konkola, Paul T., Carl G. Chen, Ralf K. Heilmann, and Mark L. Schattenburg. "Beam steering system and spatial filtering applied to interference lithography." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 18, no. 6 (2000): 3282. http://dx.doi.org/10.1116/1.1314385.

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Дисертації з теми "Spatial interference filtering"

Tsai, Chiou-Wei, Richard E. Cagley, and Ronald A. Iltis. "JOINT INTERFERENCE SUPPRESSION AND QRD-M DETECTION FOR SPATIAL MULTIPLEXING MIMO SYSTEMS IN A RAYLEIGH FADING CHANNEL." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604390.

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ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California<br>Spatial multiplexing (SM) systems have received significant attention because the architecture offers high spectral efficiency. However, relatively little research exists on optimization of SM systems in the presence of jamming. In a spatially uncoded SM system, such as V-BLAST, the channel state information is assumed to be unavailable a priori at both transmitter and recei

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Nybo, Jeffrey M. "Development of a GPU-Based Real-Time Interference Mitigating Beamformer for Radio Astronomy." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7749.

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Radio frequency interference (RFI) mitigation enables radio astronomical observation in frequency bands that are shared with many modern satellite and ground based devices by filtering out the interference in corrupted bands. The present work documents the development of a beamformer (spatial filter) equipped with RFI mitigation capabilities. The beamformer is intended for systems with antenna arrays designed for large bandwidths. Because array data post processing on large bandwidths would require massive memory space beyond feasible limits, there is a need for a RFI mitigation system capable

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Щербина, Ольга Алімівна, Ольга Алимовна Щербина та Olga Shcherbyna. "Методологія побудови антенних систем радіомоніторингу з фільтрацією та придушенням завад". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/52195.

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У роботі розроблено методологію побудови малоелементних антенних систем радіомоніторингу з розширеними функціональними можливостями, яка охоплює методи компенсації та адаптації для придушення та фільтрації завадового випромінювання. Наведені складові методології надають можливість підвищувати ефективність антенних систем радіомоніторингу в процесі вимірювання основних характеристик досліджуваної електромагнітної хвилі під час дії на систему завадового випромінювання на частоті близькій до частоти корисного сигналу.За допомогою розробленої методології побудови антенних решіток з пристро

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Rossholm, Andreas. "On Enhancement and Quality Assessment of Audio and Video in Communication Systems." Doctoral thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-00604.

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The use of audio and video communication has increased exponentially over the last decade and has gone from speech over GSM to HD resolution video conference between continents on mobile devices. As the use becomes more widespread the interest in delivering high quality media increases even on devices with limited resources. This includes both development and enhancement of the communication chain but also the topic of objective measurements of the perceived quality. The focus of this thesis work has been to perform enhancement within speech encoding and video decoding, to measure influence fa

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Silva, Marco Quiteres da. "Impact of physical layer impairments on SDM networks based on ROADM nodes." Master's thesis, 2021. http://hdl.handle.net/10071/24322.

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Current transport optical networks are approaching its capacity limits, mainly due to new applications and services that require a huge amount of resources. To increase the network capacity, multiband solutions, that exploit the unused capacity of actual fibers, in particular the L-band, are being currently commercially explored. However, this strategy is assumed as a short to medium term solution. A long-term solution is to use spatial-division multiplexing (SDM) in the optical domain, which leads to the concept of SDM-based optical networks. In this work, different SDM switching architectur

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Частини книг з теми "Spatial interference filtering"

Kohno, Ryuji. "Spatial and Temporal Filtering for Co-Channel Interference in CDMA." In Code Division Multiple Access Communications. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-2251-5_7.

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Rupi, Marilli, Panagiotis Tsakalides, Enrico Del Re, and Chrysostomos L. Nikias. "A Robust Spatial Filtering Method for DOA Estimation of Coherent Sources in Impulsive Interference." In Multimedia Communications. Springer London, 1999. http://dx.doi.org/10.1007/978-1-4471-0859-7_4.

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Xu, Hao, Linyong Wu, Chunlin Li, Gang Xu, and Jue Hu. "Radar State Cognition and Clutter Suppression Method Based on Naive Bayes Learning." In Advances in Transdisciplinary Engineering. IOS Press, 2023. http://dx.doi.org/10.3233/atde230968.

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As the operation environment is increasingly complex, air defense radar is affected by various kinds of clutter, including ground clutter, meteorological clutter, etc. Ground clutter is a type of fixed clutter and can be effectively removed through filters such as MTI. While meteorological clutter usually exists in a complex and diverse motion state, which is difficult to be suppressed, and a large amount of meteorological clutter interference may lead to plots saturation and more false track on radar, thereby affecting the efficiency of radar target detection and accurate tracking. To address

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Ni, Jialu, Wenhui Shi, Pinghua Xu, Qiuju Wei, Xiaowan Sun, and Yanmo Zhou. "Automatic Density Measurement of Striped Woven Fabrics Based on Adaptive Filtering." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2023. http://dx.doi.org/10.3233/faia220708.

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In order to reduce the interference of stripe signal on the density automatic measurement of woven fabric and extend the the application scope, an adaptive Gaussian Notch Filtering (GNF) algorithm based on Fast Fourier transform is proposed. In the pre-proceesing stage, the Fourier transform was utilized to transform the woven fabric bitmap to spectral image, as to obtain the spectral characteristics of the striped fabric. The improved GNF algorithm was used to identify the peak of stripe signal, which determined the bandwidth radius and locate the stripe bright area. Based on the fused Fourie

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Chen, Yuchen, Pengfei Ren, Jingyu Wang, et al. "Region-Aware Dynamic Filtering Network for 3D Hand Reconstruction." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2023. http://dx.doi.org/10.3233/faia230301.

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3D hand reconstruction from RGB image has attracted a lot of attention due to its crucial role in human-computer interaction. Nevertheless, it is still challenging to perform 3D hand reconstruction under conditions of hand-object interaction due to severe mutual occlusion. Previous methods usually adopt fixed convolution kernel to extract features. We argue that simply sharing the static filter for all regions is impertinent, given that the occlusion degree varies across different regions, resulting in inconsistent visual representations. To address this issue, we proposed Region-aware Dynamic

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Xuan, Liang, Jiaxin Dong, Song Xu, et al. "UWB Sensor-Based Assisted AGV Indoor Localization Method." In Advances in Transdisciplinary Engineering. IOS Press, 2025. https://doi.org/10.3233/atde250321.

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The Automated Guided Vehicles (AGVs) on the production lines mainly utilize positioning and navigation technology based on Light Detection and Ranging (LiDAR). There are problems with inaccurate positioning data due to data drift, environmental interference, and error accumulation. Based on Ultra-Wideband (UWB) sensors and data processing technology, the paper proposes a UWB sensor-assisted indoor localization method for AGVs in intelligent manufacturing factories. Three-dimensional spatial localization of the indoor production line is achieved by LiDAR and UWB sensors, which are used to acqui

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Saremi, Amin. "Spatial Audio Signal Processing for Speech Telecommunication inside Vehicles." In Advances in Fundamental and Applied Research on Spatial Audio [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.105002.

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Since the introduction of hands-free telephony applications and speech dialog systems in automotive industry in 1990s, microphones have been mounted in car cabins to capture, and route the driver’s speech signals to the corresponding telecommunication networks. A car cabin is a noisy and reverberant environment where engine activity, structural vibrations, road bumps, and cross-talk interferences can add substantial amounts of acoustic noise to the captured speech signal. To enhance the speech signal, a variety of real-time signal enhancement methods such as acoustic echo cancelation, noise re

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Тези доповідей конференцій з теми "Spatial interference filtering"

Mao, Yuwei, and Jinli Meng. "Spatial-Polarization Domain Joint Filtering Under Interference Polarization Agility." In 2024 4th International Conference on Electronics, Circuits and Information Engineering (ECIE). IEEE, 2024. http://dx.doi.org/10.1109/ecie61885.2024.10626494.

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Xu, Xiaonan, Shuanping Du, and Yanyan An. "Interference Removal by Spatial Filtering." In APIT 2024: 2024 6th Asia Pacific Information Technology Conference. ACM, 2024. http://dx.doi.org/10.1145/3651623.3651633.

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Hellbourg, Gregory, Keith Bannister, and Aidan HotarP. "Spatial filtering experiment with the ASKAP beta array." In 2016 Radio Frequency Interference (RFI). IEEE, 2016. http://dx.doi.org/10.1109/rfint.2016.7833528.

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Dybdal, R. B., C. J. Clark, D. J. Hinshilwood, and L. Xu. "Spectral and Spatial Uplink Interference Filtering." In 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2018. http://dx.doi.org/10.1109/apusncursinrsm.2018.8609345.

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Nikitina, Julianija, Ceren Babayigit, Kęstutis Staliūnas, and Lina Grinevičiūtė. "Fano-like resonances in modulated single-layers for angular and frequency selectivity of light." In Optical Interference Coatings. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/oic.2022.md.12.

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The conformal deposition of high refractive index films on the modulated surface was investigated. Fabricated single-layer photonic structures show sharp angle-wavelength sensitivity of transmission and imply spatial and spectral filtering abilities.

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Boonstra, van der Veen, and Raza. "Spatial filtering of continuous interference in radio astronomy." In IEEE International Conference on Acoustics Speech and Signal Processing ICASSP-02. IEEE, 2002. http://dx.doi.org/10.1109/icassp.2002.1005301.

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Boonstra, Albert-Jan, Aile-Jan van der Veen, and Jamil Raza. "Spatial filtering of continuous interference in radio astronomy." In Proceedings of ICASSP '02. IEEE, 2002. http://dx.doi.org/10.1109/icassp.2002.5745263.

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Erdem, Fatih, Omer Can Dabak, Tolga Sonmez, Lale Alatan, and S. Sencer Koc. "Interference supression in GPS receivers using spatial filtering." In 2016 24th Signal Processing and Communication Application Conference (SIU). IEEE, 2016. http://dx.doi.org/10.1109/siu.2016.7496133.

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Steeb, Jan-Willem W., David B. Davidson, and Stefan J. Wijnholds. "Spatial filtering of near-field radio frequency interference at a LOFAR LBA station." In 2016 Radio Frequency Interference (RFI). IEEE, 2016. http://dx.doi.org/10.1109/rfint.2016.7833544.

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Price, Michael G., Alan E. Craig, Joseph C. Harsanyi, and John N. Lee. "Adaptive Optical Filtering Architecture." In Optical Computing. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/optcomp.1989.mc3.

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This paper discusses aspects of adaptive filtering applied to narrowband interference rejection for wideband receiver systems. A time/space integrating optical architecture using a spatial light modulator is described.

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