| 1. | Spatial frequency domain
空间频率域 |
| 2. | Synthetic aperture radiometer applies the interferometric principle to sample in the spatial frequency domain and retrieves the image by fourier or other numerical transformation
综合孔径辐射计利用孔径综合原理在空间频率域中采样，通过傅立叶变换或其他数学变换获取反演亮温图像。 |
| 3. | Ridgelet transform decompose the spatial frequency domain into some subbands with different directions and frequencies . this hierarchy matchs the multi - channel model of hvs ( human visual system ) better than wavelet transform
由于小脊变换的特点，使得在小脊变换域中建立视觉模型比在dct 、 dwt域中建模更自然，更有优势。 |
| 4. | From the point of spatial frequency domain the paper applies the spatial frequency transformation to analyze the awg transmission characteristics and probes into the function of fourier transform , the characteristics of coherent system and its application in optical information process domain
论文应用傅立叶光学的空间频域变换，从空间频域的角度分析了awg的传输特性，探讨了awg的傅立叶变换功能及其相干系统特性，以及它在光信息处理领域中的应用。 |
| 5. | This paper studies the least redundant solutions of two - dimensional array system by using the simulated annealing algorithm . two ideal thinning solutions for the two - dimensional circle array were discussed intensively in this paper . one solution uses half - circle configuration with very much reduced number of elements and taking an image by rotating the array ; the other selects element positions around the full circle to provide a roughly uniform coverage in the spatial frequency domain
在一维天线阵设计的基础上，本文利用模拟退火算法给出了两种最小冗余二维圆环天线阵的结构设计方案，一种方案利用天线旋转，在半圆周内稀疏天线；另一种方案通过将空间频率采样点的均匀分布作为优化的约束条件，在全圆周上使天线单元分布达到最优。 |
