Adaptive-beamformer with accurate intensity-estimation technique for high-range-resolution vascular ultrasound imaging

2013 ◽  
Author(s):  
Hirofumi Taki ◽  
Takuya Sakamoto ◽  
Makoto Yamakawa ◽  
Tsuyoshi Shiina ◽  
Toru Sato ◽  
...  
Keyword(s):  
Ultrasound Imaging ◽  
Estimation Technique ◽  
Intensity Estimation ◽  
Range Resolution ◽  
Adaptive Beamformer ◽  
Vascular Ultrasound ◽  
High Range

High-range-resolution imaging using frequency domain interferometry with stabilization techniques for real-time vascular ultrasound

2015 ◽  
Vol 54 (7S1) ◽  
pp. 07HF05 ◽  
Author(s):  
Hirofumi Taki ◽  
Kousuke Taki ◽  
Makoto Yamakawa ◽  
Tsuyoshi Shiina ◽  
Motoi Kudo ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Real Time ◽  
Range Resolution ◽  
Vascular Ultrasound ◽  
Resolution Imaging ◽  
High Range

scholarly journals Precision Imaging of Frequency Stepped SAR with Frequency Domain Extracted HRRP and Fast Factorized Back Projection Algorithm

2017 ◽  
Vol 2017 ◽  
pp. 1-13
Author(s):  
Can-bin Yin ◽  
Da Ran
Keyword(s):  
Fourier Transform ◽  
Frequency Domain ◽  
Single Point ◽  
Projection Algorithm ◽  
Great Promise ◽  
Back Projection ◽  
Imaging Processing ◽  
Block Partition ◽  
Range Resolution ◽  
High Range

Novel frequency domain extracted method (FDEM) to obtain high range resolution profile (HRRP) for frequency stepped synthetic aperture radar (SAR) is proposed in this paper, and the mathematical principle and formulas of this new HRRP obtaining idea combined with classical fast Fourier transform (FFT), chirp z transform (CZT), and single point Fourier transform (SPFT) are deduced, analyzed, and compared in detail. Based on the HRRP data, precision imaging processing is completed using a data block partition based fast factorized back projection algorithm. Imaging validations are executed and all results proved that the FDEM has a great capability of antijamming. It is more effective than conventional time domain IFFT method (TDM) and shows a great promise in frequency stepped radar imaging and applications.

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