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一、引言在同步通信卫星和广播卫星的初步设计中,总要计算卫星天线波束和覆盖区的关系,即在给定卫星轨道位置和要求覆盖区边界条件下,求出卫星天线波束的大小和方位。计算时可先求出在没有轨道位置及姿态误差时与所要求覆盖区边界完全吻合的波束,称为理想波束。由于所要求覆盖区(例如一个国家)的边界形状往往是复杂的,因此所求得的理想波束的形状也相当复杂。尽管目前的天线技术还难以完全做出这样复杂形状的成形
I. INTRODUCTION In the preliminary design of synchronous communications satellites and broadcast satellites, the relationship between the satellite antenna beam and the coverage area is always calculated. That is, under the given satellite orbit position and the required coverage area boundary conditions, the size of the satellite antenna beam and position. The calculation can first find the beam in the absence of orbital position and attitude error with the desired coverage area completely consistent with the beam, known as the ideal beam. Since the shape of the boundary of the desired coverage area (eg, a country) is often complex, the shape of the idealized beam to be obtained is quite complex. Despite the current antenna technology is also difficult to completely make such a complex shape forming