Results 91 to 100 of about 19,915 (242)
Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.Abstract The incorporation of appropriate dynamic constraints in data assimilation (DA) is highly important for improving the forecasting of disastrous weather. It is often challenging to describe subgrid physical processes with strong nonlinearity and discontinuity in dynamic constraints because of difficulties in tangent linear and adjoint ...
Xin Li +6 more
wiley +1 more source
Radar target micro-doppler signature classification
, 2008 This thesis reports on research into the field of Micro-Doppler Signature (μ-DS) based radar Automatic Target Recognition (ATR) with additional contributions to general radar ATR methodology.
Smith, G.E.
core
Imminent Localized Precipitation Preceded by a Surge in Cloud‐Base Descent and Reflectivity
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract The nowcasting of localized precipitation (LP) is often limited by insufficient observation of the vertical cloud evolution preceding rainfall. Here we systematically tracked rapid cloud development within 2 hr before LP onset, utilizing cloud data collected in 2024 from the millimeter‐wavelength cloud radar network across China, together with
Zhen Zhang +10 more
wiley +1 more source
Discrete radar based on modulo arithmetic
EURASIP Journal on Advances in Signal ProcessingZak-OTFS is a modulation scheme where signals are formed in the delay–Doppler (DD) domain, converted to the time domain (DD) for transmission and reception, then returned to the DD domain for processing.
Nishant Mehrotra +4 more
doaj +1 more source
Observing the Earth's Plasmasphere and Ionosphere From the Lunar Surface
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract We present the analysis of the first lunar‐based observational characterization of the Earth's plasmasphere and ionosphere using Global Navigation Satellite Systems signals tracked from the lunar surface by the Lunar GNSS Receiver Experiment (LuGRE). The Earth‐Moon geometry enables limb sounding of the plasmasphere at altitudes exceeding 3,000
C. Cesaroni +8 more
wiley +1 more source
On the relationship between the velocity of E-region HF echoes and E B plasma drift [PDF]
, 2005 International audienceIn this study, velocities of E-region HF echoes observed by the Stokkseyri HF radar are compared with ExB plasma drifts in the F-region measured by the DMSP satellites.
D. W. Danskin +7 more
core +1 more source
IEEE Access, 2016 We investigate the feasibility of estimating the total energy expenditure (TEE) of a human for walking/running activities with micro-Doppler signatures. Doppler radar can capture micro-Doppler signatures produced from limb motions when a human moves.
Youngwook Kim +2 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Satellite studies have shown that some of the deepest convection with high lightning flash rates occurs downstream of the Andes in subtropical South America (SSA). Using high resolution ground‐based observations in SSA, we explore the relationship between lightning and radar‐inferred storm microphysics.
M. N. Rocque +2 more
wiley +1 more source
Acceleration of parasitic multistatic radar system using GPGPU
, 2011 This dissertation details the implementation of PMR [Parasitic Multistatic Radar] signal processing chain in the GPGPU [General Purpose Graphic Processing Units] platform.
John, Mathew
core
Bistatic Human micro-Doppler Signatures for Classification of Indoor Activities [PDF]
, 2017 This paper presents the analysis of human micro- Doppler signatures collected by a bistatic radar system to classify different indoor activities. Tools for automatic classification of different activities will enable the implementation and deployment of ...
Griffiths, Hugh +8 more
core +1 more source