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Experimental Study of on-Orbit Correction for Beam Direction Variation of Large Reflector Antenna

机译:大反射天线波束方向变化的在轨校正实验研究

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We have been researching and developing the STICS (Satellite / Terrestrial Integrated Mobile Communication System). For this system, a large satellite antenna is necessary and we have been studying the antenna with approximately 30m aperture size. The reflectors of these antennas are very complex and radiation pattern of antenna can be affected by surface error and distortion. With these large antennas, thermal distortion error especially can have serious implications, causing orbit beam direction errors, distortion of beam shapes, and increasing sidelobe levels.This paper describes the experimental results with the REV (Rotating element Electric field Vector )method measured at multi earth stations using ETS-VIII (Engineering test Satellite VIII) and the evaluation of reflector information (rotation) for correction of wiught of array elements. REV method is very useful to correct the weight of array feed far away from measurement position as from earth station to satellite.
机译:我们一直在研究和开发STICS(卫星/地面综合移动通信系统)。对于该系统,必须使用大型卫星天线,并且我们一直在研究孔径约为30m的天线。这些天线的反射器非常复杂,天线的辐射方向图可能会受到表面误差和失真的影响。有了这些大型天线,尤其是热畸变误差会产生严重的影响,导致轨道波束方向误差,波束形状畸变和旁瓣电平增加。本文介绍了在多点测量REV(旋转元件电场矢量)方法的实验结果使用ETS-VIII(工程测试卫星VIII)的地球站,并评估反射器信息(旋转)以校正阵列元件的误差。 REV方法对于校正从地球站到卫星的远离测量位置的阵列馈电的重量非常有用。

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