The imaging problem is also formulated for a phased array system which spotlights a target area with its transmitted beam to improve the target to clutter power ratio, and obtains beam-steered data in the receive mode for high-resolution imaging....
The interferograms obtained are then spatially heterodyne-detected on a computer to extract the signal components, that is, array data. Then, the eigenvector of the largest eigenvalue is derived by applying the power method to the array data and it is beam-steered to get images of the object...
The system is controlled by a personal computer (PC), and radio frequency echo data of each channel are transferred to the same PC via a standard USB 2.0 port for image reconstructions. Using the HFR imaging system, we have developed a new limited-diffraction array beam imaging method with ...
Theoretically, the time taken to acquire this data is approximately the same as that taken to perform a B-scan with the array. The key advantage is that post practicing of the complete raw data set enables any beam profile to he recreated. Additionally, this approach allows novel inspections ...
Pulsed phased array beamforming Thomas L.Szabo,PeterKaczkowski, inEssentials of Ultrasound Imaging, 2024 7.6.2Two-dimensional arrays At the bottom ofFig. 7.17are two-dimensional arrayswhich haveM×Nelements. While a one-dimensional array may typically have 128 or 256 elements, such a number woul...
imaging performance of the conformable array on phantom soft matter of various shapes, with and without phase correction. The FlexArray demonstrates controllable beam steering functionality and operational pressures of > 500 kPa at the focal point, at a resonant driving frequency of ~ 1.4 ...
Fourier based imaging method with steered plane waves and limited-diffraction array beams Not Available D Fonda,J Cook - 《Proceedings of the IEEE Ultrasonics Symposium》 被引量: 27发表: 2005年 Multi-dimensional real-time ultrasonic blood flow imaging apparatus and method An ultrasonic diagnostic app...
The simulated data was obtained using ultrasonic field simulations and the measured data was acquired using a linear phased array imaging wire targets in water. The results show that the MMSE beamformer has superior temporal and lateral resolution compared to DAS. It is also shown that the MMSE ...
Reconfigurable time-steered array-antenna beam former 来自 掌桥科研 喜欢 0 阅读量: 37 作者:MY Frankel,RD Esman 摘要: We present and analyze a hardware-optimized technique that provides true-time-delay steering for broadband two-dimensional array-antenna applications. The technique improves on ...
The proposed approach entails an entwined design, i.e., jointly selecting the optimum transmit and receive sensor locations for accomplishing MaxSINR receive beamforming. Specifically, we consider a co-located multiple-input multiple-output (MIMO) radar platform with orthogonal transmitted waveforms, ...