本文選題：交替隱式時(shí)域有限差分法　切入點(diǎn)：微波斷層成像　出處：《電波科學(xué)學(xué)報(bào)》2016年05期 　論文類型：期刊論文

【摘要】：傳統(tǒng)的時(shí)域有限差分(Finite-Difference Time-Domain,FDTD)算法受到穩(wěn)定性條件的制約,時(shí)間步長受限于空間網(wǎng)格的尺寸.醫(yī)學(xué)應(yīng)用講究即時(shí)性,為提高成像的速度,文中采用無條件穩(wěn)定的交替隱式時(shí)域有限差分(Alternating-Direction Implicit Finite-Difference Time-Domain,ADI-FDTD)算法替代傳統(tǒng)的FDTD算法進(jìn)行正向計(jì)算,通過實(shí)驗(yàn)得出采用ADI-FDTD算法在保證精度的前提下,計(jì)算時(shí)間可縮短為FDTD算法的四分之一,為乳腺癌微波即時(shí)成像提供了可能.
[Abstract]:The traditional Finite-Difference Time-Domain FDTDalgorithm is restricted by the stability condition, and the time step is limited by the size of the space grid. In this paper, the alternative implicit implicit finite-difference time-domain Implicit Implicit Finite-Difference time-domain FDTD algorithm, which is unconditionally stable, is used instead of the traditional FDTD algorithm to carry out the forward calculation. The experimental results show that the ADI-FDTD algorithm is used to ensure the accuracy of the algorithm. The computing time can be shortened to 1/4 of that of FDTD algorithm, which provides the possibility for microwave instant imaging of breast cancer.
【作者單位】： 南京郵電大學(xué)電子科學(xué)與工程學(xué)院;空軍航空大學(xué);
【分類號】：R737.9;TN015

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1 趙延文;聶在平;馬弘舸;;UPML媒質(zhì)中無條件穩(wěn)定的二維ADI-FDTD方法[A];2001年全國微波毫米波會(huì)議論文集[C];2001年

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本文編號：1614361