Conceptual Performance of a Satellite Borne, Wide Swath Synthetic Aperture Radar
Conceptual Performance of a Satellite Borne, Wide Swath Synthetic Aperture Radar
复制标题
DOI：
10.1109/tgrs.1981.350361
复制
发表时间：
1981-04
影响因子：
8.2
通讯作者：
K. Tomiyasu
中科院分区：
文献类型：
--
作者：
K. Tomiyasu
星载合成孔径雷达可以对 700 公里量级的宽幅区域进行成像，单视分辨率为 100 米。如果设计满足测绘带远边缘的模糊度约束，则最大测绘带宽度与雷达波长和物理天线孔径的形状无关。天线方向图可以是在仰角平面上扫描的笔形波束，也可以是由长天线形成的扇形波束。扫描笔形波束天线可以是相控阵或多馈反射器，其比长天线更实用，可以对宽幅区域进行成像。设计性能权衡计算涉及分辨率、幅宽、天线面积、平均发射机功率和数字数据速率。
A satellite borne synthetic aperture radar can image a wide swath in the order of 700 km with one-look 100-m resolution. If the design meets the ambiguity constraints at the far edge of the swath, the maximum swath width is independent of both radar wavelength and shape of the physical antenna aperture. The antenna pattern can be a pencil beam scanned in the elevation plane, or a fan beam formed by a long antenna. The scanning pencil beam antenna may be a phased array or multiple-feed reflector which may be more practical than a long antenna to image a wide swath. Design performance trade computations are presented involving resolution, swath width, antenna area, average transmitter power and digital data rate.