Results 31 to 40 of about 17,103 (274)
Passive detection of moving aerial target based on multiple collaborative GPS satellites [PDF]
, 2020 Passive localization is an important part of intelligent surveillance in security and emergency applications. Nowadays, Global Navigation Satellite Systems (GNSSs) have been widely deployed. As a result, the satellite signal receiver may receive multiple
Chen, Yunfei +5 more
core +1 more source
Automatic refocus and feature extraction of single-look complex SAR signatures of vessels [PDF]
, 2016 In recent years, spaceborne synthetic aperture radar ( SAR) technology has been considered as a complement to cooperative vessel surveillance systems thanks to its imaging capabilities.
Mallorquà Franquet, Jordi Joan +1 more
core +2 more sources
Using heterogeneous satellites for passive detection of moving aerial target [PDF]
, 2020 Passive detection of a moving aerial target is critical for intelligent surveillance. Its implementation can use signals transmitted from satellites. Nowadays, various types of satellites co-exist which can be used for passive detection.
Chen, Yunfei +5 more
core +1 more source
Adaptive reconstruction of radar reflectivity in clutter-contaminated areas by accounting for the space-time variability [PDF]
, 2014 Identification and elimination of clutter is necessary for ensuring data quality in radar Quantitative Precipitation Estimates (QPE). For uncorrected scanning reflectivity after signal processing, the removed areas have been often reconstructed by ...
Berenguer Ferrer, Marc, Park, Shinju
core +2 more sources
International Journal of Antennas and Propagation, 2019 The high-frequency hybrid sky-surface wave radar (HFSSWR) is a new kind of over-the-horizon radar system. Combining the advantages of both the sky wave radar and the surface wave radar, HFSSWR has drawn much attention in recent years.
Jiazhi Zhang +4 more
doaj +1 more source
STC Using Coastal Map and Wavelet Transform for Sea Clutter Suppression
International Journal of Electronics and Communication EngineeringN. R, Devaraju Ramakrishna, Sneha Sharma
semanticscholar +2 more sources
Land-sea Separation and Sea Surface Zoning Algorithms for Sea Surface Target
Leida xuebao, 2019 Adaptive detection can effectively improve the detection performance of marine surveillance radars; however, the islands or lands introduce discrete or flaky strong clutter, which may result in wrong covariance matrix estimation.
ZHOU Ming +3 more
doaj +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 In this article, we propose a new weak maneuvering target detection method in a sea environment with a Radon-fractional Fourier transform (RFrFT) canceller, which can efficiently suppress the sea clutter and detect targets with low computations.
Chang Gao, Ran Tao, Xuejing Kang
doaj +1 more source
Property Analysis and Suppression Method of Real Measured Sea Spikes
Leida xuebao, 2015 In case of high-resolution, low grazing angle, high sea state, and horizontal transmitting, horizontal receiving polarization, the radar returns are strengthened, resulting in sea spikes.
Huang Yong, Chen Xiao-long, Guan Jian
doaj +1 more source
Sensors, 2020 Due to the motion of the platform, the spectrum of first-order sea clutter will widen and mask low-velocity targets such as ships in shipborne high-frequency surface-wave radar (HFSWR).
Liang Guo +5 more
doaj +1 more source