Results 261 to 270 of about 64,454 (293)

MTI Processing and Weibull-Distributed Ground Clutter

IEEE Transactions on Aerospace and Electronic Systems, 1982
It is shown that the Weibull-distributed ground clutter obeys a Weibull distribution after processing by the double canceler moving target indicator (MTI).
Matsuo Sekine, Shingo Ohatani, Toshimitsu Musha, Takeru Irabu, Eiichi Kiuchi, Toshihiko Hagisawa, Yuichi Tomita   +6 more
openaire   +1 more source

Addressing Ground Clutter Corruption of Sodar Measurements

45th AIAA Aerospace Sciences Meeting and Exhibit, 2007
Echoes from ground clutter around a SODAR may result in a low bias in the wind speed measured by a SODAR. Typically, some, but not all, of the data collected by a SODAR at a site with ground clutter may be corrupted in this manner. In this study, methods to identify acceptable data points in already-collected data are explored, as well as the use of ...
Anthony Rogers, Elizabeth Walls, William Henson, James Manwell   +3 more
openaire   +1 more source

Airborne ground clutter measurement system design considerations

IEEE Aerospace and Electronic Systems Magazine, 1988
Geometric limits, calibration considerations, and error analysis are discussed for an L-band airborne clutter measurement system designed to collect simultaneous bistatic and monostatic clutter measurements in support of the hybrid bistatic radar (HBR) system. The geometric limit is only one of the actual limits to the experimental accuracy.
M. Wicks, F. Stremler, S. Anthony
openaire   +1 more source

Global clutter statistics for ground based radars

21st IEEE Convention of the Electrical and Electronic Engineers in Israel. Proceedings (Cat. No.00EX377), 2002
Ground clutter is a factor which limits radar ability to detect low-flying targets. A new physical model is proposed from which the global statistics of the clutter are derived. The observed specific clutter of the ground for this model is shown to follow a Weibull distribution with spread parameter equal to /spl radic/5.
E. Shichor, Y. Meimoun
openaire   +1 more source

Ground clutter simulation for surface-based radars

Proceedings International Radar Conference, 2002
This paper presents a site specific ground clutter simulation developed for ground-based radars. The simulation provides clutter power maps according to digital terrain relief and landcover information. The comparison between simulated clutter and actual clutter shows that a good accuracy in clutter simulation can be achieved even for complex ...
D. Le Hellard, J.P. Henry, E. Agnesina, M. Moruzzis   +3 more
openaire   +1 more source

Cylindrical Ground-clutter Shield.

1973
PhD ; Electrical engineering ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/190581/2/7415827 ...
openaire   +2 more sources

Ground Clutter Canceling with a Regression Filter

Journal of Atmospheric and Oceanic Technology, 1999
Abstract 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
openaire   +1 more source

Statistical Analysis of High-Resolution SAR Ground Clutter Data

IEEE Transactions on Geoscience and Remote Sensing, 2007
This paper deals with the problem of modeling high-resolution synthetic aperture radar clutter data from different vegetated areas. We analyzed moving and stationary target recognition (MSTAR) data sets focusing on histograms, moments, and covariance of clutter amplitude, texture, and speckle.
GRECO, MARIA, GINI, FULVIO
openaire   +2 more sources

Computer modelling of ground clutter in airborne radar

IEE Colloquium on Radar System Modelling, 1998
The modelling of ground clutter in airborne radar systems is an essential component of assessing system performance but is computationally intensive because of the requirement to consider ground returns over the full extent, or at least a substantial portion, of the Earth's surface which is visible to the radar platform. This paper describes a computer
D.J. Browning, J.E. Summers
openaire   +1 more source

Adaptive clutter suppression for ground penetrating radar

SPIE Proceedings, 2005
Adaptive methods are currently in use for GPR to detect shallow-buried targets in the presence of ground-bounce that may be orders of magnitude greater than the target response. One such method that has been used with noteworthy success to reduce the soil background has been called the Principal Components Algorithm (PCA) that applies the Mahalanobis ...
openaire   +1 more source