羽流对卫星反射面天线辐射特性的扰动分析
发布时间：2018-11-28 12:52
【摘要】：相比化学推进,电推进具有比冲高和燃料消耗少的优点,可大幅度提高卫星的机动性和寿命.但由于等离子体对电磁波的吸收和折射效应,电磁波通过等离子体时将会衰减.文中利用射线追踪、口径积分和场强叠加原理,分析等离子体羽流对卫星反射面天线远场辐射方向图的影响,计算了羽流对2~5GHz频段电磁波的衰减.与实验数据进行对比表明,对于20cm等离子体推进器,在2~5GHz天线工作频段,主瓣峰值衰减为0.3~2.5dB;在E平面,天线主瓣偏离天线轴向小于0.5°.
[Abstract]:Compared with chemical propulsion, electric propulsion has the advantages of high specific impulse and less fuel consumption, which can greatly improve the maneuverability and lifetime of the satellite. However, due to the absorption and refraction of electromagnetic waves by plasma, electromagnetic waves will attenuate when they pass through the plasma. The effect of plasma plume on far field radiation pattern of satellite reflector antenna is analyzed by means of ray tracing, aperture integral and field intensity superposition principle. The attenuation of plume to electromagnetic wave in 2~5GHz band is calculated. The comparison with experimental data shows that for 20cm plasma thruster, the peak value of the main lobe attenuates to 0.3 ~ 2.5 dB in the frequency band of the 2~5GHz antenna, and in E plane, the deviation of the main lobe from the antenna axis is less than 0.5 掳.
【作者单位】： 西安电子科技大学物理与光电工程学院;西安电子科技大学信息感知技术协同创新中心;
【基金】：中央高校基本科研业务费资助项目(JB160512) 国家自然科学基金资助项目(61571348)
【分类号】：TN820
，
本文编号：2362878
[Abstract]:Compared with chemical propulsion, electric propulsion has the advantages of high specific impulse and less fuel consumption, which can greatly improve the maneuverability and lifetime of the satellite. However, due to the absorption and refraction of electromagnetic waves by plasma, electromagnetic waves will attenuate when they pass through the plasma. The effect of plasma plume on far field radiation pattern of satellite reflector antenna is analyzed by means of ray tracing, aperture integral and field intensity superposition principle. The attenuation of plume to electromagnetic wave in 2~5GHz band is calculated. The comparison with experimental data shows that for 20cm plasma thruster, the peak value of the main lobe attenuates to 0.3 ~ 2.5 dB in the frequency band of the 2~5GHz antenna, and in E plane, the deviation of the main lobe from the antenna axis is less than 0.5 掳.
【作者单位】： 西安电子科技大学物理与光电工程学院;西安电子科技大学信息感知技术协同创新中心;
【基金】：中央高校基本科研业务费资助项目(JB160512) 国家自然科学基金资助项目(61571348)
【分类号】：TN820
，
本文编号：2362878
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