Results 71 to 80 of about 46,586 (232)
Quasi-Coherent Noise Jamming to LFM Radar Based on Pseudo-random Sequence Phase-modulation [PDF]
, 2015 A novel quasi-coherent noise jamming method is proposed against linear frequency modulation (LFM) signal and pulse compression radar. Based on the structure of digital radio frequency memory (DRFM), the jamming signal is acquired by the pseudo-random ...
Pan, Y. J., Tai, N., Yuan, N. C.
core +2 more sources
Improved Scattering Center Extraction From ISAR Data Using Simplex Optimization
International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.Inverse synthetic‐aperture radar (ISAR) techniques have started to play a key role in calculating the radar cross‐section (RCS) values of objects from near‐field measurements. It is assumed that the scene (or the scatterer) is composed of scattering centers (SCs) whose locations and complex amplitudes are found from the ISAR data.
Bahar Ugurdogan +2 more
wiley +1 more source
3-D High-Resolution ISAR Imaging for Noncooperative Air Targets
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThis article uses the inverse synthetic aperture radar (ISAR) imaging method to present real-world tests on 3-D radar imaging of noncooperative air targets. Initially, the fundamentals of 3-D ISAR are introduced.
Marcin Kamil Baczyk +10 more
doaj +1 more source
Analysis for sparse channel representation based on dictionary learning in massive MIMO systems
IET Communications, Volume 18, Issue 20, Page 1728-1740, December 2024.We provide a qualitative analytical formula for dictionary sparse representation accuracy and establish an optimal upper bound. Abstract The accuracy analysis of dictionary sparse representation for channels in massive MIMO systems is a relatively unexplored field.
Qing‐Yang Guan
wiley +1 more source
A method of 2D and 3D display of radar terminal base on programmable pipeline
IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2513-2520, December 2024.In contrast to the ideal 3D display for meteorological radar, there is no 3D mode in the military engineering field. How to realise the 2D and 3D display for general radar terminal efficiently using the local graphics processing unit (GPU), which is impossible to realise with the traditional method of field programmable gate array now, has became an ...
Zhenkui Miao +3 more
wiley +1 more source
Near‐field scattering centre modelling for complex targets
IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2657-2666, December 2024.In this paper, the authors presented the near‐field scattering centre model with the dependence description of radar distance. The model can be used to quickly calculate the near‐field scattering field and radar image features of complex targets. Abstract The parametric scattering centre (SC) model of the target has been widely used in the rapid ...
Yanxi Chen +3 more
wiley +1 more source
Random Stepped Frequency ISAR 2D Joint Imaging and Autofocusing by Using 2D-AFCIFSBL
Remote SensingWith the increasingly complex electromagnetic environment faced by radar, random stepped frequency (RSF) has garnered widespread attention owing to its remarkable Electronic Counter-Countermeasure (ECCM) characteristic, and it has been universally ...
Yiding Wang +3 more
doaj +1 more source
Three dimensional scattering center imaging techniques [PDF]
Two methods to image scattering centers in 3-D are presented. The first method uses 2-D images generated from Inverse Synthetic Aperture Radar (ISAR) measurements taken by two vertically offset antennas.
Burnside, W. D., Younger, P. R.
core +1 more source
140GHz帯ミリ波レーダのためのRPM法による高速・高精度立体画像化 [PDF]
, 2016 超広帯域レーダは高い距離分解能を有し，光学センサの運用が困難な状況で計測が可能であり，有用とされている．近年，140GHz帯の超広帯域レーダが，装置の小型化や高分解能化の観点から注目されており．建設現場における重機の目標物認識センサや救助ロボット，高齢者見守りシステム等に有用とされている．目標形状の画像化技術として，既に合成開口処理(SAR: Synthetic Aperture Radar)や，SEABED(Shape Estimation Algorithm based on Boundary ...
Yuta Sasaki, 佐々木 優太
core +1 more source
A novel multi‐target TBD scheme for GNSS‐based passive bistatic radar
IET Radar, Sonar &Navigation, Volume 18, Issue 12, Page 2497-2512, December 2024.The paper presents a novel approach to enhance low‐altitude surveillance in urban and suburban areas using GNSS‐based passive bistatic radar systems. Despite challenges such as weak signal power budget and complex multi‐target tracking, the proposed method introduces a track‐before‐detect (TBD) strategy with a DCCF‐based cluster centroid extraction ...
Tao Tang +4 more
wiley +1 more source