Zobrazeno 1 - 10
of 7 569
pro vyhledávání: '"linear array"'
Autor:
Xiumei Li, Limin Zhang, Yong Li, Yushan Jiang, Cheng Zhao, Shibao Fang, Zongli Yang, Liwen Sun
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract Limited data on the correlation between the perineal body (PB) and stress urinary incontinence (SUI) are available. The objectives of this study were to quantify the PB using shear wave elastography (SWE) technology with a high-frequency lin
Externí odkaz:
https://doaj.org/article/9295ab69252e41b4a0310b8c13275e43
Publikováno v:
Measurement Science Review, Vol 24, Iss 3, Pp 105-112 (2024)
In order to accurately measure the flight trajectory of the projectile in a long-distance target range, it is important to establish a vertical target measurement system with a two-line array camera at several positions along the range. In the presen
Externí odkaz:
https://doaj.org/article/f9a6f0e4cf1d4ecba8599d5be9e089c2
Publikováno v:
Telecom, Vol 5, Iss 2, Pp 312-332 (2024)
In this study, at ultra-wideband (UWB) frequency band (3.1–10.6 GHz), we propose the use of compact 2:1 and 3:1 nonuniform transmission line Wilkinson power dividers (NTL WPDs) as feeding networks for simple 2 × 1 linear UWB Vivaldi tapered and no
Externí odkaz:
https://doaj.org/article/c6e0611c9dbe4e6d84a96e4aa7fe75dd
Publikováno v:
Geo-spatial Information Science, Pp 1-19 (2024)
Integrating multiple hyperspectral linear-array cameras into a Linear-array Multi-camera System (LMS) enables an expanded Field of View (FOV) while preserving high spatial resolution. However, the constrained capabilities of tie points are weakened b
Externí odkaz:
https://doaj.org/article/5a4d4479ab18454c8e1c8755e0e66d54
Publikováno v:
Results in Engineering, Vol 23, Iss , Pp 102842- (2024)
The advancement of future technology seeks to create wireless systems capable of achieving faster data transfer rates. One solution to confront this challenge is by employing Multiple-Input Multiple-Output (MIMO) systems. Nonetheless, the primary obs
Externí odkaz:
https://doaj.org/article/85d5cc7b1a8a49d99939ad80b763d35c
Publikováno v:
Defence Technology, Vol 33, Iss , Pp 352-363 (2024)
Uniform linear array (ULA) radars are widely used in the collision-avoidance radar systems of small unmanned aerial vehicles (UAVs). In practice, a ULA’s multi-target direction of arrival (DOA) estimation performance suffers from significant perfor
Externí odkaz:
https://doaj.org/article/8a8d26f4bf4a4795a24b634363675cf6
Publikováno v:
IEEE Access, Vol 12, Pp 94712-94732 (2024)
The power-weighted distribution method is used to satisfy radiation pattern requirements at a certain targeted sidelobe level (SLL) suppression. This article reports a detailed discussion of theoretical and experimental approaches for the application
Externí odkaz:
https://doaj.org/article/e3c9a14d66d44edbbe698b565bc0d976
Publikováno v:
Remote Sensing, Vol 16, Iss 19, p 3685 (2024)
Multiple-input multiple-output (MIMO) technology is widely used in the field of radar imaging. Array sparse optimization reduces the hardware cost of MIMO radar, while virtual aperture and the equivalent phase center (EPC) principle simplify the rada
Externí odkaz:
https://doaj.org/article/40f2d88186f947cb8dc5d0ad0bd814f5
Publikováno v:
You-qi chuyun, Vol 42, Iss 12, Pp 1369-1375 (2023)
The inner wall corrosion of pipelines is concealed and hard to monitor in time. In order to visualize the shape of the internally corroded pipeline, as well as the defect volume and its spatial distribution, a three-dimensional(3D) model reconstructi
Externí odkaz:
https://doaj.org/article/e7d9ddcc70dc4d709d8ff10d41d5ecd2
Autor:
Pan Gong, Xiaofei Zhang
Publikováno v:
Sensors, Vol 24, Iss 19, p 6205 (2024)
In this paper, the direction of arrival (DOA) estimation problem for the unfolded coprime linear array (UCLA) is researched. Existing common stacking subarray-based methods for the coprime array are invalid in the case of its subarrays, which have th
Externí odkaz:
https://doaj.org/article/b26120a02ab648ea9041cef82b3d73bf