Results 41 to 50 of about 5,894 (171)
2-D Coherence Factor for Sidelobe and Ghost Suppressions in Radar Imaging [PDF]
, 1956 The coherence factor (CF) is defined as the ratio of coherent power to incoherent power received by the radar aperture. The incoherent power is computed by the multi-antenna receiver based on only the spatial variable.
Li, Shiyong +4 more
core +3 more sources
Concurrent Sensing and Communications Based on Intelligent Metasurfaces
Advanced Electronic Materials, Volume 12, Issue 2, 21 January 2026.An IM‐assisted concurrent ISAC scheme to exploit the otherwise wasted energy inherent in high‐order 16‐APSK DAM, to realize wireless gesture recognition thereby enabling efficient resource sharing for C‐ISAC. This architecture offers promising opportunities for next‐generation mobile internet, embodied intelligence, smart homes, smart factories, and ...
Hanting Zhao +8 more
wiley +1 more source
A Scalable and Integrated Reconfigurable Intelligent Surface
Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.A scalable X‐band reconfigurable intelligent surface is presented using one‐bit phase‐tunable unit cells with integrated FPGA control. The RIS supports fast, high‐speed reconfiguration through WiFi, LAN, and USB interfaces and can be scaled to multiple tiles. The design achieves over 20 dBi broadside gain and reliable 2D beam steering in both elevation
Zaid Akram +6 more
wiley +1 more source
A Modified Hierarchical Vision Transformer for Soil Moisture Retrieval From CYGNSS Data
Water Resources Research, Volume 62, Issue 1, January 2026.Abstract This research introduces a new deep learning (DL) framework, multi‐head self‐attention‐aided vision Transformer (MSA‐ViT), for soil moisture (SM) retrieval using Cyclone Global Navigation Satellite System (CYGNSS) data. We first assess the sensitivity of CYGNSS reflectivity (Γ) $({\Gamma })$ to SM, demonstrating a strong physical linkage ...
Qingyun Yan +4 more
wiley +1 more source
Performance Analysis of a Low-Interference N-Continuous OFDM Scheme
, 2018 This paper investigates two issues of power spectrum density (PSD) and bit error rate (BER) of an N-continuous orthogonal frequency division multiplexing (NC-OFDM) aided low-interference time-domain scheme, when the smooth signal is designed by the ...
Dan, Lilin, Wei, Peng, Xiao, Yue
core
Adaptive antenna arrays for satellite communications: Design and testing [PDF]
When two separate antennas are used with each feedback loop to decorrelate noise, the antennas should be located such that the phase of the interfering signal in the two antennas is the same while the noise in them is uncorrelated.
Gupta, I. J. +2 more
core +1 more source
Overlapped-MIMO Radar Waveform Design for Coexistence With Communication Systems
, 2015 This paper explores an overlapped-multiple-input multiple-output (MIMO) antenna architecture and a spectrum sharing algorithm via null space projection (NSP) for radar-communications coexistence. In the overlapped-MIMO architecture, the transmit array of
Abdelhadi, Ahmed +2 more
core +1 more source
Tapered high-gain Fabry-Perot cavity antenna with high sidelobe suppression for 5G industry. [PDF]
Sci Rep, 2023 Hussain M, Lee KG, Kim D.
europepmc +1 more source
Effect of weighting on time sidelobe suppression [PDF]
Weighting simulations in the time domain were considered to shape the time-compressed pulse waveform. The digital input radar data were 32 bit I,Q, and simulated data from a point target, imaged by a Seasat-A type system.
Dicenzo, A.
core +1 more source
Sidelobe suppression for phase‐coded pulse by mainlobe windowing
The Journal of Engineering, 2019 Mismatched filter is an important technique to suppress the sidelobes of phase‐coded pulses. Here, the authors propose a mainlobe windowing procedure, by which a much lower sidelobe level can be obtained at a slightly signal‐to‐noise ratio loss. Based on this idea, they present two mismatched filter design procedures, namely an integrated sidelobe ...
Jiacen Xu, Lixiang Ren, Haofei Wang
openaire +2 more sources