Results 81 to 90 of about 45,007 (228)
Empirical Comparison of Chirp and Multitones on Experimental UWB Software Defined Radar Prototype [PDF]
, 2012 This paper proposes and tests an approach for an unbiased study of radar waveforms' performances. Using the ultrawide band software defined radar prototype, the performances of Chirp and Multitones are compared in range profile and detection range.
Denoulet, J. +3 more
core
Earth and Space Science, Volume 13, Issue 2, February 2026.Abstract The radar surface echo can be separated into coherent and incoherent components by statistical approaches, and the coherent component can be described by a backscattering model related to the RMS height. According to backscattering models for fractal surfaces, the coherent power in decibels decreases with RMS height on a scale independent of ...
Tiansheng Hong +9 more
wiley +1 more source
Radar-Centric AFDM Waveform With Chirp-Domain Index Modulation for ISAC
IEEE Open Journal of the Communications SocietyThis paper presents a radar-centric framework for integrated sensing and communication (ISAC) that utilizes affine frequency-division multiplexing (AFDM).
Muneeb Ahmad +2 more
doaj +1 more source
Relative Entropy-Based Constant-Envelope Beamforming for Target Detection in Large-Scale MIMO Radar With Low-Resoultion ADCs [PDF]
, 2023 Ziyang Cheng +4 more
openalex +1 more source
Testing Volcano Deformation Models Against 3D Seismic Reflection Imagery of Ancient Intrusions
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.Abstract Magma intrusion often drives uplift of the overburden and free surface. Analytical modeling of such surface uplift at active volcanoes allows us to estimate intrusion geometries and positions, as well as volume and pressure changes; these insights have proven critical to forecasting volcanic unrest and eruptions. However, it is rarely possible
C. Magee, S. K. Ebmeier, J. Hickey
wiley +1 more source
Measurements of Partial Reflections at 3.18 Mhz Using the CW Radar Technique [PDF]
, 1984 An equipment for measuring partial reflections using the FM-CW-radar principle at 3.18 MHz, installed at the Ionospheric Observatory Juliusruh of the CISTP (HHI), is described.
Priese, J., Singer, W.
core +1 more source
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.Abstract Operational wave forecasting requires a delicate balance between the accuracy and computational speed of the spectral wave model used, in which the nonlinear wave–wave interaction “source” term plays an important role. The exact formulation of these nonlinear four‐wave interactions requires solving the six‐dimensional Boltzmann integral, an ...
Jialun Chen +4 more
wiley +1 more source
An active jamming recognition algorithm based on ER-C-L network model [PDF]
Zhihui kongzhi yu fangzhenTo solve the problem of low recognition accuracy of radar active jamming in strong noise environment,an algorithm for ER-C-L(Extended ResNet-CNN-LSTM) network model based on one-dimensional composite features is proposed.
ZHAO Zhongchen, LIU Limin, XIE Hui, HAN Zhuangzhi, JING He
doaj +1 more source
Flight testing a V/STOL aircraft to identify a full-envelope aerodynamic model [PDF]
Flight-test techniques are being used to generate a data base for identification of a full-envelope aerodynamic model of a V/STOL fighter aircraft, the YAV-8B Harrier.
Bach, Ralph E., Jr., Mcnally, B. David
core +1 more source
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.Abstract While data‐driven global weather models (e.g., GraphCast) excel at large‐scale circulation forecasts, they exhibit systematic biases in heavy precipitation prediction due to European Centre for Medium‐Range Weather Forecasts Reanalysis (ERA5) uncertainties and neural networks' tendency to over‐smooth rainfall fields.
Dandan Chen, Dan Yao, Yaqiang Wang
wiley +1 more source