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为分析在1668~1675 MHz频段引入卫星移动系统的可行性,对该频段卫星移动系统与无线电探空系统间的兼容共存问题进行了深入分析。介绍了两个无线系统的基本特征和主要参数,讨论了两系统间潜在的干扰链路。针对卫星移动业务终端对二次测风雷达的干扰以及二次测风雷达对卫星空间电台的干扰两条主要干扰链路,采用计算机静态建模和蒙特卡洛仿真方法,对干扰情况进行了计算仿真。仿真结果表明,在卫星终端密度在50个/km2时,二次测风雷达所需的保护距离为60~80 km,而单个二次测风雷达主瓣方向发射二次测风雷达的功率高于空间卫星国际保护标准达60 d B。该研究结果可为我国无线电管理部门对该频段的重新规划提供支撑。
In order to analyze the feasibility of introducing satellite mobile system in the 1668-1675 MHz frequency band, the compatibility and coexistence between the satellite mobile system and the radiosonde system in this band are analyzed in depth. The basic characteristics and the main parameters of the two wireless systems are introduced, and the potential interference links between the two systems are discussed. Aiming at the interference of secondary mobile windscreens to secondary wind monitoring radar and the secondary wind monitoring radar’s interference to satellite space stations, the interferences are calculated by static computer modeling and Monte-Carlo simulation simulation. The simulation results show that the secondary wind protection radar has a protection distance of 60-80 km when the terminal density of the satellite is 50 km2 / km2, while the power of the secondary wind measurement radar emitting by the direction of the main lobe of a single secondary wind measurement radar is high International standards for space satellites up to 60 days B. The results of this study can provide support to the radio management department of our country on the re-planning of this band.