Pattern corresponding to a given arbitrary array excitation I/P Shaped beam Synthesis (here, using simple Woodward-Lawson method) Shaped beam Synthesis (here, using simple Woodward-Lawson method) In my previous
We propose that a multi-beam array should be used to scan the full aperture of an optical system rather than a single collimated beam. The measurement information in the overlapping zones is used to determine the pointing errors between adjacent sampling positions of the multi-beam array. Then,...
These algorithms use a beamforming method to excite the array elements in a predetermined order to form coherent beams. Then, they convert the collected signals into ultrasonic images, according to ultrasonic signal post-processing technology. Conventional ultrasonic-image post-processing methods are ...
In recent years, there has been a growing demand for outdoor noise monitoring aimed at enhancing noise prevention, control and management [1], [2]. In outdoor environments, the presence of other noise sources can influence the detection of the target noise source. Beamforming is a widely uti...
In order to verify the performance of the scheme against a strong jamming signal, we first needed to simulate the beam pattern of a single DMA. We set the number of DMA’s metamaterial array element bits to 𝑏𝑖𝑡𝑠=2bits=2. The metamaterial array-element spacing of the DMA was ...
PATL. Considering the feature of the 2D phased array antenna where the beam direction is known and adjust- able, we propose a range-free weighting method PATL to calculate the two-dimensional coordinates of the tag. We set the known antenna projection coordinate on the ground as (0, 0)...
Auto~parametricvibrationofacablestayed~beamstructureunderrandomexcitation [ J]. Journalof EngineeringMechanicsꎬ 2006(5): 279~286. [13] 宋军伟ꎬ 方坤河. 应用Lyapunov 指数研究混凝土阶段特征的稳定判据 [J]. 重庆建筑大学学报ꎬ 2008ꎬ 30(3): 129~133. (SONGJunweiꎬ FANGKunhe. Researchon...
Another object of the present invention is to provide a hand-supportable Imaging-Based Bar Code Symbol Reader employing an integrated Multi-Mode Illumination Subsystem which generates a visible narrow-area illumination beam for aiming onto a target object, then illuminates a 1D bar code symbol aligne...
Resources such as phased array radar time and energy are limited and need to be dynamically allocated and effectively managed so that the phased array antenna beam agility ability can be given full play to. Meanwhile, radar work modes and work parameters are adjusted in a self-adaptive mode to...
Integrity management of such welded pipelines requires accurate detection and sizing of the defects, especially near the circumferential girth welds, through a non-destructive testing (NDT) approach. Despite the vast application of welded steel pipeline in the industry, efficient and precise sizing of ...