Results 161 to 170 of about 63,218 (203)
Some of the next articles are maybe not open access.

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 ...
openaire   +1 more source

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.
openaire   +1 more source

Target detection within sea clutter based on combined fractal characteristics

2017 20th International Conference on Information Fusion (Fusion), 2017
Using fractal dimension or one of other fractal characteristics to detect targets in sea clutter, it is often difficult to distinguish at low signal-to-clutter ratios. To solve this problem, a new method for target detection in sea clutter based on combined fractal characteristics is proposed.
Ningbo Liu   +5 more
openaire   +1 more source

Target and Clutter Characteristics

2009
The operation of all active sensors requires that some of the energy transmitted by the device be reflected off objects within the beam. The characteristics of the reflected signal can then be analyzed in various ways to extract information about the target.
openaire   +1 more source

Mars radar clutter and surface roughness characteristics from MARSIS data

Icarus, 2018
Abstract Radar sounder studies of icy, sedimentary, and volcanic settings can be affected by reflections from surface topography surrounding the sensor nadir location. These off-nadir “clutter” returns appear at similar time delays to subsurface echoes and complicate geologic interpretation.
Bruce A. Campbell   +2 more
openaire   +1 more source

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.
openaire   +1 more source

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   +1 more
openaire   +1 more source

Sea clutter characteristics analysis and target detection based on HHT

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet), 2011
Non-linear & non-smooth is the important characteristics of sea clutter. Hilbert-Huang Transform is a new analysis method for nonlinear & non-smooth signals. When doing the Hilbert-Huang Transform to the radar signals, after the Empirical Mode Decomposition, the Trend Function and parts of Intrinsic Mode Functions are different between the sea clutter ...
Xiao Chunsheng, Cha Hao, Xia Dong
openaire   +1 more source

Polarization and Frequency Spectra Characteristics of Chaff Cloud Clutter Signals

2019 IEEE International Conference on Computational Electromagnetics (ICCEM), 2019
This Influence on the echoes of the chaff cloud by the translation and rotation of chaffs are studied according to the chaff spiral descent model. The characteristics of the frequency spectra and polarization of the chaff cloud are studied using the statistic method.
Zhiyong Zhou   +5 more
openaire   +1 more source

Performance characteristics of the masked target transform volume clutter metric

Optical Engineering, 2012
Prior work has shown that the masked target transform volume (MTTV) clutter metric provides a measure of scene clutter that better correlates to measured probability of detection for human observers than several previously published clutter metrics. Several factors involved in using the MTTV to assess clutter in imagery are discussed here. A previously
H. Alan Camp   +2 more
openaire   +1 more source

Home - About - Disclaimer - Privacy