Results 141 to 150 of about 5,607,096 (183)

Characteristics of pausing in normal, fast and cluttered speech

Clinical Linguistics & Phonetics, 2016
One of the main symptoms of cluttering is atypical pausing. However, there is little information about what this atypical pausing means, because typical speakers also have pauses not only at syntactic boundaries, but also within syntactic structures, and even within words.
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Characteristics of Clutter

2010
Radar clutter is a radar return from an object or objects that is of no interest to the radar mission. For example, the mission of many radar systems is the detection and tracking of targets such as aircraft, ships, or ground vehicles. To these systems, clutter is considered to be an interfering return from a natural object such as precipitation ...
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Characteristic research of ionospheric clutter in over the horizon HFSWR

IET Conference Publications, 2009
The presence of ionospheric clutter in high-frequency over the horizon surface wave radar may extremely affect the performance of radar system and degrade the capability of detecting target, so it should be suppressed. The characteristic analysis of ionospheric clutter is the foundation of studying method to suppress ionospheric clutter, so it is ...
null Jiang Wei, null Deng Weibo
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Characteristics of the acquisition of a dim target in clutter

SPIE Proceedings, 1996
Target acquisition is fairly straight forward when tracking a single bright target. A dim target in clutter on the other hand can present some challenges in target acquisition. The characteristics of detecting a target under typical conditions are fairly well understood.
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Ocean clutter characteristics for a coherent Doppler UHF radar

OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158), 2002
A coherent UHF radar has been developed by the authors for the detection of small targets in high sea-states. There are several important advantages that can be exploited by operating in the UHF band. The UHF spectrum has been proven to provide a window where the clutter energy scattered back from the sea is significantly less than at other radar ...
C. Randell, D. Power, R. Khan
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Clutter Modeling and Characteristic Analysis for Airborne MIMO Radar

Advanced Materials Research, 2014
For the issue of MIMO airborne radar clutter modeling in different environment conditions, a clutter modeling method based on composite model is proposed. It builds different types of clutter model through the changes of model parameters. The clutter model consists of clutter amplitude distribution model, and clutter cell scattering model.
Lin Hao, Yong Shun Zhang, Zhe Li, Jie Xu
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The characteristics of radar sea clutter

2006
In this chapter, sea clutter is described in terms of its observed characteristics. These observations will provide the foundations upon which the themes of subsequent chapters are developed. Radars operating in a maritime environment inevitably encounter backscattered radar signals from the sea surface, usually referred to as sea clutter.
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Analyzing the Statistical Characteristics of Clutter from the Sea Surface

Vestnik MEI, 2018
As is known, when radars with long impulses observe a sea surface area in a range much larger than the seawave length, the clutter in the form of reflections from the sea surface has the Gaussian distribution, and their envelope has the Rayleigh distribution.
Egor A. Milashchenko, Aleksandr A. Yazovsky   +1 more
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Polarimetric Characteristics of X-Band SAR Sea Clutter

2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
The polarimetric characteristics of X-Band sea clutter are investigated using data from the DSTO Ingara airborne radar operating in a circular spotlight geometry. An analysis of the Doppler spectrum as a function of azimuth geometry with respect to the wind direction shows the difference in the surface velocity between the HH and VV scattering ...
N. Stacy, M. Preiss, D. Crisp
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Clutter Characteristics and Effects

1987
Since the earliest days of radar, detection of unwanted objects have interfered with the detection of desired targets. These unwanted returns are known as clutter, and there is a substantial amount of literature available on radar clutter dating from World War II to the present.
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