spatial spectrum

A New Method of Two-dimensional Spatial Spectrum Estimation based on ESPRIT Using Combined Array

一种新的二维空间谱估计方法&二维组合阵列ESPRIT

Spatial evolutionary spectrum distribution is derived and used to estimate direction of signals which have constant or time-varying amplitude.

建立了空间演变谱分布，适用于恒幅和时变幅度的FM信号到达角估计。

A Spatial Spectrum Estimation Method of Target Detection Based on Microwave Thermal Radiation

基于微波热辐射的空间谱估计目标探测方法

Spatial spectrum analysis of speckle imaging process

散斑成象过程的频谱分析

The signal processing techniques of infrared spectrum radiometer for detecting spatial objects was investigated.

天体物理学空间实验室研究用于空间目标探测的红外光谱仪信号处理技术。

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。

The exceed performance mechanism of spatial spectrum estimate algorithm to direction finding is analyzed.

同时,分析了空间谱估计测向超性能机理.

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。

Altimeter data were corrected with tidal model and was interpolated in spatial domain to obtain time series data. 3D energy-frequency-time spectrum and sea surface anomaly ( SSA) were obtained by HHT from time series data.

对南海卫星高度计资料进行潮汐校正和空间插值得到时间序列数据，对这些时间序列数据进行HHT，得到了南海海平面高度变化的三维能量-频率-时间谱和海平面高度距平（SSA）。

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。

To study the ultra-narrow linewidth fiber laser, the saturable characteristic of unpump EDF and the loss spectrum resulting from spatial hole burning ( SHB) induced by stand wave in it were measured.

测量了未抽运掺铒光纤的饱和吸收特性和驻波诱导增益烧孔导致的损耗波长相关特性，为超窄线宽激光器研究奠定了基础。