Results 161 to 170 of about 607 (212)
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Weibull-Distributed Ground Clutter
IEEE Transactions on Aerospace and Electronic Systems, 1981Weibull-distributed ground clutter of cultivated land was measured using an L-band long-range air-route surveillance radar (ARSR) having a 3.0 ?s pulsewidth and a 1.23° beamwidth at very low grazing angles between 0.21° and 0.32°. It is shown that the shape parameter of the Weibull distribution varied from c = 1.507 to c = 2.0, corresponding to the ...
Toshimitsu Musha, M Sekine
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Statistical Analyses of Measured Radar Ground Clutter Data
IEEE Transactions on Aerospace and Electronic Systems, 1999The performance of ground-based surveillance radars strongly depends on the distribution and spectral characteristics of ground clutter. To design signal processing algorithms that exploit the knowledge of clutter characteristics, a preliminary statistical analysis of ground-clutter data is necessary.
Fulvio Gini, M V Greco, A Farina
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Radar ground clutter prediction
SPIE Proceedings, 2003To investigate the potentiality of a radar ground prediction radar satellite data (SAR) have been studied for the generation of clutter estimation models. The generation of clutter statistics as well as scrutinized analysis of specific dependencies and influences of backscatter processes and behaviour is the basis for statistical clutter prediction ...
Rainer Wehrenberg, Dieter Rickenbrock
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Suppression of ground and weather clutter
IEE Proceedings F Communications, Radar and Signal Processing, 1981It is shown that Weibull-distributed weather clutter obeys a Weibull distribution after passing through a moving target indicator (MTI) processor realised by a double canceller. Both ground and weather clutter can be thus suppressed by using the method of MTI and new Weibull constant false alarm rate (CFAR) systems.
M. Sekine +6 more
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Cylindrical ground-clutter shield
IEEE Transactions on Antennas and Propagation, 1976A theoretical investigation of the influence of metal shields on antenna radiation patterns is performed. This study allows us to determine the proper dimensions of a circular cylindrical finite perfectly conducting shield placed on the ground around infinitesimal sources located at its axis, in order to reduce the ground-side lobe.
C. Pereira, null Chen-To Tai
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Sea and ground radar clutter modeling
2008 IEEE Radar Conference, 2008The modeling of the clutter echoes is a central issue for the design and performance evaluation of radar systems. The aim of this paper is to describe the state-of-the-art approaches to the modeling and understanding of land and sea clutter echoes and their implications on performance prediction and signal processors design.
Maurice W. Long, Maria S. Greco
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Ground Clutter Canceling with a Regression Filter
Journal of Atmospheric and Oceanic Technology, 1999Abstract This paper explores ground clutter filtering with a class of cancelers that use regression. Regression filters perform this task in a simple manner, resulting in similar or better performance than the fifth-order elliptic filter implemented in the WSR-88D.
Sebastián M. Torres, Dusan S. Zrnic
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Simulation of Ground Clutter Based on GPU and RTX
2016Clutter computation becomes a bottleneck of radar simulation. To solve this problem, a parallel simulation method for clutter computation is introduced based on GPU platform. Blocks in GPU compute the clutter of each scattering unit in parallel, and threads in each block parallel compute the clutter of each differential unit in scattering unit ...
Jun Xu +4 more
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Ground Clutter In Optical Seekers
Optical Engineering, 1981A new approach to the study of ground clutter radiation in electro-optical missile seekers has been developed that utilizes a comparison between seeker responses for artificial and measured infrared (IR) scenes. Seeker responses were statistically very much the same for both types of input except at a few isolated points thought to be the commonly ...
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Design of SLB systems in the presence of correlated ground clutter
IEE Proceedings - Radar, Sonar and Navigation, 2000Impulsive interference might increase the number of false alarms in a surveillance radar. The sidelobe-blanking (SLB) device, used in connection with the radar system, reduces the number of false alarms when the interference impinges on the antenna sidelobes.
A. FARINA, GINI, FULVIO
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