| 相对幅度和相位对相位阵列系统的影响及消除 |
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| 引用本文： | 吴龟灵,骆清铭,曾绍群,刘贤德.相对幅度和相位对相位阵列系统的影响及消除[J].光学学报,2002,22(2):43-248. |
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| 作者姓名： | 吴龟灵 骆清铭 曾绍群 刘贤德 |
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| 作者单位： | 华中理工大学生物医学光子学教育部重点实验室,武汉,430074 |
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| 基金项目： | 国家自然科学基金 (NNSF 6 97780 0 4)资助课题 |
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| 摘 要： | 用扩散近似的解析模型分析了幅度相消相位调制系统对组织中微小异质子实现定位的原理；详细讨论了相对幅度、相对相位、异质子的大小和吸收系数对系统对系统定位精度的影响。提出了一种与相对幅度和相位无关的定位方法并从理论上解释了这种方法的原理和可行性。
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| 关 键 词： | 相位调制系统 幅度相消 光子密度波 空间定位 相对幅度 相对相位 相位阵列系统 生物组织 异质子 吸收系数 |
Effects of Relative Amplitude and Phase on Phased Array System and Their Elimination |
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| Wu Guiling,Luo Qingming,Zeng,Shaoqun,Liu Xiande.Effects of Relative Amplitude and Phase on Phased Array System and Their Elimination[J].Acta Optica Sinica,2002,22(2):43-248. |
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| Authors: | Wu Guiling Luo Qingming Zeng Shaoqun Liu Xiande |
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| Abstract: | The principle of localization of a small object in tissues using an amplitude cancellation phase modulation system (or phased-array system) is explained by an analytical model of the diffusion approximation. The effects of various factors on localization of the object using Phased-array system are discussed, which include the relative phase and the amplitude between two sources, the absorption coefficient and the size of absorbers. A localization method independent of the relative amplitudes and phase between two sources is presented. The principle of the method is explained and its feasibility is proved theoretically. |
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| Keywords: | phase modulation spectroscope (PMS) amplitude cancellation photon density wave spatial localization |
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