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For high range resolution ultrasonographic vascular imaging, we apply frequency domain interferometry with the Capon method to a single frame of in-phase and quadrature (IQ) data acquired using a commercial ultrasonographic device with a 7.5 MHz linear array probe. In order to tailor the adaptive beamforming algorithm for ultrasonography we employ four techniques: frequency averaging, whitening, radio-frequency...
Ultra wide-band (UWB) radar is an attractive technology in a variety of applications including security systems. In that pursuit, it is essential to develop low-cost systems that produces clear target images. We have recently developed an imaging method for a simple radar system with a single antenna, namely the frequency-domain DORT (French acronym for decomposition of the time reversal operator)...
Ultra wide-band (UWB) radar imaging systems are a promising field of research as they cover a variety of applications. Among all UWB radar imaging methods, the time-reversal (TR) method enables high-resolution imaging in a multi-path environment. Conventional TR methods have been applied to antenna array systems while our previous work proposed a type of TR method, namely the frequency-domain D'ecomposition...
For high range resolution acoustic vascular imaging we apply frequency domain interferometry and Capon method to a few frames of in-phase and quadrature (IQ) data acquired by a commercial ultrasonographic device. To suit the adaptive beamforming algorithm to medical acoustic imaging we employ three techniques; frequency averaging, whitening, and pseudo-double RF data conversion. The proposed method...
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