星载SAR广义聚束模式天线波束控制研究

Study on the Antenna Beam Control of Spaceborne Broad-Sense Spotlight SAR

该文介绍了广义聚束概念并建立了星载SAR广义聚束模式简化空间几何模型。在此基础上研究了天线波束指向角的控制方法，得出了在合成孔径时间内实时控制天线波束指向角的理论依据。最后结合一组系统参数给出了波束指向控制的实验结果，验证了理论公式。

The concept of broad-sense spotlight is put forward and the simplified space geometry model of spacebome broad-sense spotlight SAR is built in this paper. On the base of the simplified model, the control method of antenna beam direction angle is studied. The theory for computing the real-time beam direction angle is deduced. Finally, some experimental results are presented by a group of system parameters and the theory formula is validated.