Using theory of spacial spectrum estimation to estimate Direction of Arrival (DOA) of target signals will be one of absolutely necessary technology means in future electron warfare.
利用空间谱估计理论，对外来目标信号进行超分辨测向将会成为近代电子战中必不可少的技术手段之一。
Through the collection, trim, iteration and calculation of the real road loading on the engine supporting, this paper describes the study on the spacial road spectrum used on rig test.
通过对发动机支承实际道路载荷的采集、整理迭代计算得到了用于台架试验的加载谱，其结果可对发动机支承进行可靠性试验和动态性能试验。
The mean concentration equation of adsorbing solute transport in heterogeneous unsaturated soil was studied based on the spectrum analysis of the spacial random field.
本文应用随机场的谱分析方法，研究了吸附性溶质在非饱和、非均匀土体中运动时平均浓度所遵循的基本方程。
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