spatial frequency spectrum的例句大全

spatial frequency spectrum analysis of the performance of the diffractive optical element for beam smoothing

衍射光学束匀滑器件性能的空间频谱分析

The research on OFDM spectrum sensing algorithm utilizes only the time diversity and frequency diversity to improve detection performance without utilizing spatial diversity.

目前针对OFDM信号的频谱感知算法研究只利用时域分集和频域分集提升检测性能，而没有考虑利用空间分集提升检测性能。

It can obtain time diversity, spatial diversity and frequency diversity at the same time. So it not only can effectively combat the frequency selective fading in the course of spread, but also the spectrum efficiency is greatly improved.

它将时间分集、空间分集和频率分集有机地结合起来，不仅可以有效地抵抗信号传播过程中遭遇的频率选择性衰落，而且频谱利用率得到很大地提高。

By analysis of the intermediate frequency signals which through eight antennae and receiver channels, eight channels radio spatial spectrum direction finding system can reach the purpose of finding radio direction.

八通道无线电空间谱测向系统通过分析经过八路天线和接收机通道以后的中频信号达到确定无线电信号方向的目的。

firstly, the wideband signals are focused on the instantaneous frequency respectively with symmetric antenna and bi-linear transformation. secondly, the correlation matrices are constructed on the signals' instantaneous frequency. with music spatial spectrum, the doas will be obtained at last.

该算法利用对称阵子和双线性变换可将多个宽带信号聚焦至各自的瞬时频率，再通过傅立叶变换，在信号各自的瞬时频率上构造相关矩阵，由此构造MUSIC空间谱可获得信号的DOA。