spatial spectrum的用法和樣例：
例句
- We can estimate two-dimensional spatial spectra of sources in colour Guassian noises by eigen-decomposing the matrix.
對四階累量混合波達方向矩陣進行特徵分解，可實現有色高斯雜訊背景中空域信號二維空間譜估計。 - 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.
摘要從物體散射場對應的傅里葉空間出發，提出基於空間譜域分佈的成像系統定性評價體系。
