Results 31 to 40 of about 8,222 (258)
Xibei Gongye Daxue Xuebao, 2023 Aiming at the problem that the non-stationary of airborne bistatic radar clutter reduces the performance of traditional clutter suppression algorithm, this paper first formulates airborne bistatic radar clutter model, and then analyzes the bistatic radar
CHENG Yufeng +4 more
doaj +1 more source
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 ...
Miyamoto, Shoko, Hayasaka, Kikuko
openaire +2 more sources
Intelligent Suppression Method for Ionospheric Clutter Based on Clustering and Greedy Strategy
Leida xuebao, 2020 Clutter is a term used for unwanted echoes in electronic systems, particularly in reference to radars. Such echoes are typically returned from ground, sea, rain, animals/insects, chaff, and atmospheric turbulences, and can cause serious performance ...
Yinsheng WEI, Jianyu ZHOU, Rongqing XU
doaj +1 more source
Clutter Rank Estimation Method for Bistatic Radar Systems Based on Prolate Spheroidal Wave Functions
Remote SensingBistatic radar exhibits spatial isomerism and diverse configurations, leading to unique clutter characteristics distinct from those of monostatic radar.
Xiao Tan +4 more
doaj +1 more source
Clutter Suppression Approach for End-Fire Array Airborne Radar Based on Adaptive Segmentation
IEEE Access, 2019 End-fire array antenna is a kind of special radar antenna with beam pointing perpendicular to the normal direction of the array. Because of its low profile and directional radiation characteristics, it is especially suitable for blind zone compensation ...
Yongwei Li +3 more
doaj +1 more source
Remote Sensing, 2022 Based on marine environmental factors of different sea areas, a high-performance sea clutter time series modeling algorithm for the real sea surface is developed to study the amplitude mean and Doppler spectrum characteristics of sea clutter.
Longxiang Linghu +4 more
doaj +1 more source
Sea Clutter Suppression Method Based on Correlation Features
Journal of Marine Science and EngineeringRadar target detection in a sea clutter environment is of significant importance in both civilian and military applications, with the detection of small maneuvering targets being particularly challenging.
Zhen Li +5 more
doaj +1 more source
Exploring Pb‐Chelation Chemistry in the Crystallization Dynamics of Halide Perovskites
Advanced Functional Materials, EarlyView.A mechanism of how Pb‐chelation chemistry governs coordination geometry and initial nucleation behavior at the precursor level of halide perovskite, by regulating the deprotonation state of a chelating additive, is elucidated. This allows for innovative reaction‐system design principles that promote coherent growth while suppressing defect formation in
Byeong Jun Kim +13 more
wiley +1 more source
Super‐Resolution Ultrasound Based Cell Tracking With Polymeric Nanobubbles
Advanced Materials, EarlyView.This study presents a super‐resolution ultrasound platform for tracking cells in vivo. Biocompatible polymeric nanobubbles are used as highly echogenic intracellular labels. Following the injection of cells and microbubbles, ultrasound localization microscopy (ULM) can dynamically match the microvascular architecture and individual cell trajectories ...
Junlin Chen +19 more
wiley +1 more source
Sea Clutter Suppression Method Based on Ocean Dynamics Using the WRF Model
Journal of Marine Science and EngineeringSea clutter introduces a significant amount of non-target reflections in the echo signals received by radar, complicating target detection and identification.
Guigeng Li +4 more
doaj +1 more source