| 1. | The holographic process adjusts itself automatically so as to duplicate r or a independently for the exact form of the irregularly scattered field a' . 全息过程本身自动地进行调节,以此来为不规则散射场A'的精确形状分别复显出R或A。 |
| 2. | Then , the kirchhoff scalar diffraction theory is used to derive the scatter field of the edo grating and the simulation model is presented 并利用基尔霍夫标量衍射理论导出了edg光栅散射场的公式,建立了对蚀刻衍射光栅的模拟模型。 |
| 3. | The holographic process adjusts itself automatically so as to duplicate r or a independently for the exact form of the irregularly scattered field a ' 全息过程本身自动地进行调节,以此来为不规则散射场a '的精确形状分别复显出r或a 。 |
| 4. | From the fourier space k corresponding to the scattering field of the object , an imaging evaluation mechanism based on the spatial spectral coverage is proposed 摘要从物体散射场对应的傅里叶空间出发,提出基于空间谱域分布的成像系统定性评价体系。 |
| 5. | A new data compression technique , called the threshold discrete fourier transform ( tdft ) method , is proposed to efficiently compress the scattered field data from complex targets 提出了阈值dft ( tdft )算法用于实现基于雷达目标强散射中心分布的rcs数据压缩。 |
| 6. | Meanwhile the technology for separating scattering field from total field is improved in this paper , which could eliminate the calculation error and get precise scattering field 论文还改进了时域有限差分方法中的总场散射场的分离技术,消除了原来因为分离带来的计算误差,提高了散射计算的精度。 |
| 7. | As a following step , the spectral method is reviewed intensively , including how to build the spectral equation and how to use galerkin method solving the inducting current and scattering field 然后,详细讨论了谱域方法,包括算子方程的建立、用galerkin方法求解感应电流,求解散射场的过程。 |
| 8. | In order to show the scattering and complex mode - conversion clearly , the total field is decomposed into longitudinal and transverse parts and the scattered field is obtained by subtracting incident wave from the total field 通过对纵横波的分离和在全波场中对散射波的分离,清晰地显示了裂纹对脉冲超声波的散射和复杂的模式转换。 |
| 9. | As i walked with him through the scattered fields he had inherited from his father , i asked what he needed to move out of poverty . “ control of water for my crops , ” he said , “ at a price i can afford 当我和拉曼一起走过他父亲遗留下来的零星农地时,我问他需要什麽来帮助他脱离贫穷,他说:以我可以负担的价格,购买控制灌溉水的装置。 |
| 10. | By applying the boundary conditions and the orthogonality of spherical vector wave functions , an adequate number of relations between the unknown coefficients is generated . from all these discussions , the scattered fields and normalized scattering cross sections are computed 通过以上讨论,即可建立起足够多的决定各展开系数的方程,求出散射场系数,进而求出散射场及散射截面。 |