Results 221 to 230 of about 5,339 (296)

Signature Adaption of Radar Antennas

, 2016
Lindström Jacobson, Patrik, Arbman, Anna   +1 more
core  

Lightweight and Compact Pulse Radar for UAV Platforms for Mid-Air Collision Avoidance. [PDF]

Sensors (Basel)
Sysak D, Byndas A, Karas T, Jaromi G.
europepmc   +1 more source

Exploiting Aeolus winds in a regional numerical weather prediction model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Aeolus measured winds have proven to be beneficial for global models. However, demonstrating positive impact for limited‐area models has been a challenge so far. For the first time, we have demonstrated a statistically significant positive impact of Aeolus winds in a limited‐area model by using the 4DVar data assimilation technique and the most recent ...
Gert‐Jan Marseille, Roohollah Azad, Martin Ridal, Susanna Hagelin   +3 more
wiley   +1 more source

Chirp-signal based processor for radar antennas

Y.K. Tan, P.R.P. Hoole
core   +1 more source

Optimization of split-ring resonator slots using levy-opposition-enhanced Newton Raphson method for high-gain UWB Vivaldi antenna design. [PDF]

Sci Rep
Özmen H, Izci D, Rizk-Allah RM, Ekinci S, Dalarsson M.   +4 more
europepmc   +1 more source

The benefits of a hybrid‐3DEnVar data assimilation scheme for the convection‐permitting NWP model AROME–Austria

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The climatological‐error covariance matrix used in three‐dimensional variational data assimilation (3DVar) provides smooth and isotropic increments spread to long distances. In contrast, three‐dimensional ensemble variational data assimilation (3DEnVar) with a purely ensemble‐error covariance matrix provides inhomogeneous increments and contains the ...
Kaushambi Jyoti, Philipp Griewank, Florian Meier, Martin Weissmann   +3 more
wiley   +1 more source

DAF-Aided ISAC Spatial Scattering Modulation for Multi-Hop V2V Networks. [PDF]

Sensors (Basel)
Fan Y, Wu J, Guo Y, Yang J, Zhao L, Yan W, Yang S, Ma H, Zhu C.   +8 more
europepmc   +1 more source

The role of mesoscale weather effects in simulating pyroconvection: A case study of the Santa Coloma de Queralt wildfire

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This large‐eddy simulation study on pyroconvection shows that the added value from resolving the mesoscale explicitly is found in the timing of pyrocumulus formation and circulation changes. The circulation of the convective plume itself is not substantially different between the simulations. Abstract Extreme wildfire events are characterised by strong
Koen van der Aa, Bernard Postema, Chiel van Heerwaarden, Tristan Roelofs, Harm Jonker   +4 more
wiley   +1 more source

Deep Analysis of Imaging Characteristics of Spaceborne SAR Systems as Affected by Antennas Using 3D Antenna Pattern. [PDF]

Sensors (Basel)
Shi W, Huang H, Gao W, Zhou H, Jiang H.
europepmc   +1 more source

Spatial digital processing: Application to radar antennas

J. Pourailly, J. De Reffye, C. Legendre
core   +1 more source