Results 1 to 10 of about 7,522 (178)
Characteristic Description and Statistical Model-Based Method for Sea Clutter Modeling
Remote SensingThe modeling and analysis of sea clutter are of great significance in radar target detection studies in marine environments. Sea clutter typically exhibits non-Gaussian characteristics and spatiotemporal correlations, posing challenges for modeling ...
Huafeng He +5 more
doaj +3 more sources
Multichannel Sea Clutter Measurement and Space-Time Characteristics Analysis with L-Band Shore-Based Radar [PDF]
Remote Sensing, 2022 In order to study the space-time characteristics of sea clutter, the sea clutter is always measured by the airborne multichannel radar; however, the sea clutter shows the heterogeneity between range gates, which means the space-time covariance matrix’s ...
Jintong Wan +4 more
doaj +2 more sources
Leida xuebao, 2013 Under the geometry of geosynchronous satellite-air bistatic SAR where the geosynchronous satellite is the transmitter and aerostat is the receiver, in order to suppress clutter and detect slowly moving target using Space Time Adaptive Processing (STAP ...
Zhang Dan-dan +3 more
doaj +2 more sources
Analysis of amplitude statistical and correlation characteristics of high grazing angle sea-clutter
The Journal of Engineering, 2019 Research on the characteristics of sea clutter has always been the focus in the problem of sea target detection as an indispensable part. In recent years, the problem of sea clutter characteristics under medium-high grazing angle is also paid more and ...
Heng-Yan Liu +5 more
doaj +2 more sources
Clutter Subspace Characteristics-Aided Space-Time Adaptive Outlier Sample Selection Method [PDF]
Sensors, 2021 For statistic space-time adaptive processing (STAP), a critical issue is estimating the clutter covariance matrix (CCM). However, sufficient training samples are difficult to obtain that satisfy the independent and identically distributed (IID) condition. It is because of the realistic heterogeneous environment faced by airborne radar.
Dongning Fu, Guisheng Liao, Jingwei Xu
openaire +4 more sources
Estimation of K–Distributed Clutter by using Characteristic Function Method [PDF]
Jurnal Teknologi, 2012 Prestasi pengesanan radar maritim selalunya terbatas disebabkan gema laut atau serakan yang tidak diingini. Taburan-K adalah salah satu ketumpatan berekor panjang, di mana ia dikenali dalam komuniti pemprosesan isyarat untuk memadan dengan tepat serakan laut.
Mohammad Hamiruce Marhaban
openaire +3 more sources
Doppler characteristics of sea clutter. [PDF]
, 2010 Doppler radars can distinguish targets from clutter if the target's velocity along the radar line of sight is beyond that of the clutter. Some targets of interest may have a Doppler shift similar to that of clutter. The nature of sea clutter is different in the clutter and exo-clutter regions.
Raynal, Ann Marie, Doerry, Armin Walter
openaire +4 more sources
Speech characteristics that differentiate stuttering and cluttering in Japanese speakers [PDF]
Frontiers in PsychologyBackgroundCluttering is a speech disorder distinct from stuttering. Despite this distinction, there is no established method to clearly differentiate the two disorders. This study aimed to use objective criteria to differentiate cluttering from stuttering in Japanese speakers.MethodsParticipants were 32 consecutive native-Japanese speakers who visited ...
Shuta Tomisato +9 more
openaire +4 more sources
The Japan Journal of Logopedics and Phoniatrics, 2004 日本におけるcluttering症状を呈する児童の存在を仮説的に提唱し, 彼らの発話の特徴を明らかにするために, 聴覚的な印象で「発話速度が速く聞き取りづらい」と判断された児童18名を対象とし, 発話速度と非流暢性頻度 (3項目) , MLUの測定を行った.その結果, 発話特徴の結果が類似した傾向をもつ6群が浮かび上がった.6群中, 3群は「挿入・言い直し・filler」という非流暢性タイプの頻度が高い点が, 他の3群と顕著に異なっていた.また, その3群の医療的な診断歴, 知能検査, PRS検査結果の結果から, 6名全員にLD, ADHDなどの傾向が見られた.これらの特徴は欧米で研究されているclutteringの特徴と一致した.この結果から, 本研究において, (1 ...
Shoko Miyamoto, Kikuko Hayasaka
openaire +3 more sources
CFAR Detector Based on the Identification of Sea Clutter Distribution Characteristics
Journal of Physics: Conference Series, 2022 Abstract To improve the capability of radar detection in a time-varying maritime environment, an algorithm was proposed and analyzed in this paper that can be applied to determine the shape and scale parameters of the K-distributed model using the radar parameters and environmental information under the context of K-distributed sea ...
Bowen Li +3 more
openaire +2 more sources