Results 41 to 50 of about 1,467,178 (193)

Radar HRRP Modeling using Dynamic System for Radar Target Recognition [PDF]

, 2014
High resolution range profile (HRRP) is being known as one of the most powerful tools for radar target recognition. The main problem with range profile for radar target recognition is its sensitivity to aspect angle. To overcome this problem, consecutive
Ajorloo, A., Bastani, M. H., Hadavi, M., Nayebi, M. M.   +3 more
core  

Bismuth incorporation and the role of ordering in GaAsBi/GaAs structures [PDF]

, 2014
The structure and composition of single GaAsBi/GaAs epilayers grown by molecular beam epitaxy were investigated by optical and transmission electron microscopy techniques.
Bastiman, Faebian, David, John P. R., González Robledo, David, Hunter, Chris J., Reyes, Daniel F., Sales, David L., Sánchez, Ana M.   +6 more
core   +2 more sources

Adaptive soft threshold transformer for radar high‐resolution range profile target recognition

IET Radar, Sonar & Navigation
Radar High‐Resolution Range Profile (HRRP) has great potential for target recognition because it can provide target structural information. Existing work commonly applies deep learning to extract deep features from HRRPs and achieve impressive ...
Siyu Chen, Xiaohong Huang, Weibo Xu
doaj   +1 more source

Ship Profile Imaging Using Multipath Backscattering

Remote Sensing, 2019
This paper addresses the estimation of the height of a point scatterer over a sea surface via multipath exploitation for a High Range Resolution radar that is using pulse range compression, such as Synthetic Aperture Radars.
Jean-Marc Le Caillec, Jérôme Habonneau, Ali Khenchaf   +2 more
doaj   +1 more source

Testing adiabatic contraction of dark matter in fossil group candidates

, 2010
We present deep XMM observations and ESO WFI optical imaging of two X-ray-selected fossil group candidates, RXCJ0216.7-4749 and RXCJ2315.7-0222. Using the X-ray data, we derive total mass profiles under the hydrostatic equilibrium assumption. The central
Allen, Arnaud, Arnouts, Baade, Barnes, Bartelmann, Bertin, Blumenthal, Bruzual, Bryan, Buote, Cappellari, Chabrier, Croston, Croston, D. Pierini, de Vaucouleurs, Duffy, Duffy, E. D'Onghia, Eggen, G. W. Pratt, Gastaldello, Gavazzi, Gnedin, Grimm, Humphrey, J. Démoclès, Jing, Jones, Khosroshahi, Kravtsov, Kron, Kroupa, Landolt, Lewis, M. Arnaud, Magorrian, Mamon, Markevitch, Mazzotta, Mignano, Moraux, Nagai, Navarro, Navarro, Neumann, Paresce, Pointecouteau, Ponman, Poole, Pratt, Pratt, Pratt, Pratt, Rasmussen, Renzini, S. Zibetti, Salpeter, Sand, Schlegel, Schmidt, Sun, Tissera, van der Marel, Vikhlinin, Vikhlinin, Vikhlinin, Voit, von Benda-Beckmann, Zappacosta, Zibetti, Zibetti   +72 more
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Wideband Spectroscopy of Two Radio Bursts on AD Leonis

, 2005
We report high-time-resolution, broadband spectroscopic observations of two radio bursts on the classical flare star AD Leonis. The observations were acquired by the 305 m telescope at Arecibo Observatory on 2003 June 13-14.
Bastian, T. S., Osten, R. A.
core   +1 more source

Ship Radial Size Estimation in High-Resolution Maritime Surveillance Radars via Sparse Recovery Using Linear Programming

IEEE Access, 2019
For high-resolution maritime surveillance radars operating at scan mode and transmitting long duration pulses, radial size estimation of ships is severely interfered by range sidelobe effect of pulse compression. Due to range sidelobe effect, strong ship
Peng-Lang Shui, Kun Zhang
doaj   +1 more source

Design and Processing Method for Doppler-Tolerant Stepped-Frequency Waveform Using Staggered PRF

Sensors, 2021
Stepped-frequency waveform may be used to synthesize a wideband signal with several narrow-band pulses and achieve a high-resolution range profile without increasing the instantaneous bandwidth.
Yan Zhang, Chunmao Yeh, Zhangfeng Li, Yaobing Lu, Xuebin Chen   +4 more
doaj   +1 more source

Magnetic field, chemical composition and line profile variability of the peculiar eclipsing binary star AR Aur

, 2010
AR Aur is the only eclipsing binary known to contain a HgMn star, making it an ideal case for a detailed study of the HgMn phenomenon. HgMn stars are a poorly understood class of chemically peculiar stars, which have traditionally been thought not to ...
Adelman, Adelman, Albayrak, Aurière, Bohlender, C. P. Folsom, Chochol, Chochol, Donati, Folsom, G. A. Wade, González, Hubrig, J. Silvester, Khokhlova, Kochukhov, Kochukhov, Kupka, Landstreet, Michaud, Nordstrom, O. Kochukhov, Ryabchikova, Ryabchikova, S. Bagnulo, Shorlin, Shulyak, Takeda, Torres, Wade, Wade, Wade, Wolff, Zverko   +33 more
core   +1 more source

The ESO UVES Advanced Data Products Quasar Sample - I. Dataset and New N_HI Measurements of Damped Absorbers

, 2013
We present here a dataset of quasars observed with the Ultraviolet Visual Echelle Spectrograph (UVES) on the VLT and available in the ESO UVES Advanced Data Products archive.
Peroux, Celine, Popping, Attila, Zafar, Tayyaba   +2 more
core   +3 more sources