云南高校图书馆联盟文献共享服务平台- DOPPLER

DOPPLER: 作品数：612被引量：1436H指数：14; 导出分析报告; 相关领域：电子电信医药卫生更多>>; 相关作者：赵俊荣王威琪庄良杰汪源源华扬更多>>; 相关机构：中国科学院复旦大学福建医科大学清华大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金国家高技术研究发展计划更多>>

RESEARCH ON PERFORMANCE INFLUENCE OF DIRECT-PATH SIGNAL FOR DVB-S BASED PASSIVE RADAR被引量：1: 《Journal of Electronics(China)》2013年第2期111-117,共7页Jin Wei Lü Xiaode Xiang Maosheng; Passive radar detects moving targets by Cross Ambiguity Function (CAF), which is based on the cross correlation process of the direct-path signal in reference channel and echo signal in receive channel. Thus, the perf...; 关键词：Passive radar Cross Ambiguity Function (CAF) Signal to Noise Ratio (SNR) loss Range walk Doppler walk

REVISITING THE DOPPLER FILTER OF LEO SATELLITE GNSS RECEIVERS FOR PRECISE VELOCITY ESTIMATION被引量：1: 《Journal of Electronics(China)》2013年第2期138-144,共7页Chen Xi Gao Wenyun Wan Yunheng; Supported by the National Natural Science Foundation of China(No.61132002,61231011); The theoretical aspects of the precise velocity determination of Low Earth Orbit (LEO) satellites'on board Global Navigation Satellite Systems (GNSS) receivers are derived. It shows that the receiver's Phase Lock Loop...; 关键词：Global Navigation Satellite Systems (GNSS) VELOCITY Doppler filter Centimetre level

VEHICULAR NODE POSITIONING BASED ON DOPPLER-SHIFTED FREQUENCY MEASUREMENT ON HIGHWAY被引量：3: 《Journal of Electronics(China)》2009年第2期265-269,共5页Xu Bo Shen Lianfeng Yan Feng; Supported by the National Grand Fundamental Research Program of China (973 Program, No.2007CB310606);The National High Technology Research and Development Program of China (863 Program, No.2008AA01Z205);China Postdoctoral Science Foundation funded project; Vehicular node positioning needs to be quick and precise on highway for safety considera-tion.In this paper,we present a novel and practical vehicular node positioning method which can achieve a higher accuracy and mo...; 关键词：POSITIONING Doppler-shifted frequency Vehicular Ad Hoc Network（VANET）

ESTIMATION OF DOPPLER CENTROID FREQUENCY IN SPACEBORNE SCANSAR被引量：3: 《Journal of Electronics(China)》2008年第6期822-826,共5页Zou Xiufang Zhang Qunying; Doppler centroid frequency is an essential parameter in the imaging processing of the Scanning mode Synthetic Aperture Radar (ScanSAR). Inaccurate Doppler centroid frequency will result in ghost images in imaging resu...; 关键词：Spaceborne the Scanning mode Synthetic Aperture Radar （ScanSAR） Doppler centroid frequency Energy balancing Correlation Doppler estimator

APPROACH OF IMPROVING PRECISION IN ULTRASONIC DOPPLER BLOODSTREAM SPEED MEASUREMENT BY CHAOS-BASED FREQUENCY DETECTING被引量：3: 《Journal of Electronics(China)》2006年第3期457-460,共4页Zhang Shuqing Jin Shijiu Lv Jiangtao Zhang Liguo Li Jun; Supported by the National Natural Science Foundation of China (No.60102002)the Huoyingdong Education Foundation (No.81057)the Doctoral Foundation of Hebei Province of China(No.B2004522).; It is critical for cerebral vascular disease diagnosis through Doppler to detect the maximum and the minimum of the carotid blood flow speed accurately. A kind of Duffing system under an external periodic power with d...; 关键词：CHAOS Frequency detecting Bloodstream speed measuring Ultrasonic Doppler Signal-to-Noise Ratio （SNR） Measuring precision

CRAMER-RAO BOUNDS OF THE FREQUENCY ESTIMATION IN THE TIME SELECTIVE RADIO CHANNELS WITH DOPPLER SPREAD被引量：1: 《Journal of Electronics(China)》2006年第2期165-171,共7页Hua Jingyu Yang Xin You Xiaohu; The mobile channel is slow fading and time selective, thus the multiplicative and additive noise of the channel will smear the spectral line, or arouse Doppler spread. This spread will make the parameters estimation a...; 关键词：Cramer-Rao Lower Bound （CRLB） Time selective channel Doppler-shift

ANALYSIS AND PROCESSING OF LMF-COSTAS STEPPED FREQUENCY RADAR SIGNAL: 《Journal of Electronics(China)》2003年第6期407-413,共7页Mu Shanxiang Ji Xiaoli Li Ming Li Xingguo (School of Electron. Eng. & Optoelectronic Tech., Nanjing Univ. of Sci. & Tech., Nanjing 210094); Linear Modulated Frequency (LMF) Costas Stepped Frequency Radar (SFR) signal is introduced. Its ambiguity function is derived and analyzed in detail and its feasibility is validated in theory. The scheme of the propos...; 关键词：Stepped frequency Linear Modulated Frequency (LMF) Costas frequency coding Ambiguity function Doppler influence

DOPPLER PARAMETER EXTRACTION OF MOVING TARGETS IN SAR IMAGING BY WAVELET TRANSFORM: 《Journal of Electronics(China)》1998年第4期314-319,共6页Li Gang Zhu Minhui Zhu Xixing(institute of Electronics, Academia Sinica, BeiJing 100080); In this paper, the shortages of Wigner-Ville Distribution(WVD) double-linearity in extracting the Doppler parameters of moving-targets are discussed, especially in multi-point moving-target imaging processing based on...; 关键词：Moving target imaging DOPPLER parameters WVD TRANSFORM Double-linearity WAVELET TRANSFORM SAR

STUDY OF PULSED DOPPLER SIGNAL PROCESSING AND VELOCITY TRACKING TECHNIQUE: 《Journal of Electronics(China)》1996年第2期122-128,共7页Fan Laiyao Ji Hongbing (School of Electronic Engineering, Xi’dian University, Xi’an 710071); This paper describes a signal processing system in a Pulsed Doppler (PD) radar. It mainly consists of a velocity tracking loop and a digital signal processing auxiliary channel. With many signal processing techniques,...; 关键词：PULSED DOPPLER radar SEQUENTIAL detection α-β filter VELOCITY tracking LOOP ACCELERATION compensation integration

A NEW METHOD OF DOPPLER CENTROID ESTIMATION FOR SPACEBORNE SAR-AMPLITUDE CORRELATION METHOD: 《Journal of Electronics(China)》1994年第2期170-175,共6页刘国庆黄顺吉; The linear relationship between Doppler centroid and range walking in spaceborne SAR data is analyzed, and a new method to estimate Doppler centroid is proposed, which is so called amplitude correlation method. Compar...; 关键词：SPACEBORNE synthetic APERTURE radar Range WALKING DOPPLER CENTROID estimation AMPLITUDE correlation

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