稀疏阵列交叉波束相干信号空间功率合成（英）

以稀疏阵相干信号干涉合成原理为基础，建立了相干信号空间功率合成数学模型。基于合成效率的概念，推导分析了交叉波束下波束交叉角度与目标点合成效率的关系。设计了栅基实验，对实验中栅格尺度的选定原则进行了推算分析，为利用计算机无失真地复现多点源功率合成能量分布规律打下了理论基础。通过仿真分析了波束交叉角度对有效功率点分布的影响。结果表明，在多点源与目标点等距、各点源频率相同、极化方向一致的情况下，目标点合成效率仅与空间中各点源之间夹角有关。当波束交叉时，有效功率点密集度与波束交叉角度有关。

Interference synthesis of cross beams from sparse array

Based on principle of power synthesis of sparse array, mathematical model of spatial power combining is established. Relation between cross angle of beams and synthesis efficiency on aimed point from two antenna nodes is derived. Furthermore, the setting principle of sampling interval is analyzed for simulation experiment. Energy distributions of the useful points under different cross angles were simulated. Simulation shows that if distance between the antenna nodes and aimed point are equal, and frequency, polarization and antenna type are the same, synthesis efficiency relies on the cross angles of beams, shape and density on the useful points accumulation area also rely on the cross angles of beams.