万源国家级雷达站预选址电磁环境测试的技术研究

Technical Research on Electromagnetic Environment Testing for the Pre-selected Site of Wanyuan National Radar Station

  • 摘要: 万源市地处大巴山腹地,地形复杂、气象灾害频发,亟需建设X波段天气雷达以弥补现有探测盲区,提升强对流天气监测预警能力。针对雷达预选址的电磁环境测试展开技术攻关,依据国家标准(GB 31223-2014、GB 37411-2019等),对太平镇牛卯坪和钻山坡两个候选站址开展净空条件、电磁环境及基础条件的综合勘察。结果表明:牛卯坪站址净空条件较好(最大遮挡角2.2°),但电磁测试发现9330 MHz、9359~9374 MHz频段存在占用需避让;钻山坡站址电磁环境纯净,但受花萼山地形遮挡严重(最大遮挡角15°);选址需优先满足雷达低空覆盖需求,兼顾电磁兼容性与建设可行性。

     

    Abstract: Wanyuan City is located in the hinterland of Daba Mountain, with complex terrain and frequent meteorological disasters. It is urgent to build X-band weather radar to make up for the existing detection blind area and improve the monitoring and early warning ability of strong convective weather. According to the national standards (GB 31223-2014、GB 37411-2019, etc.), the comprehensive investigation of clearance conditions, electromagnetic environment and basic conditions was carried out for the two candidate sites of Niumaoping and Zuanshanpo in Taiping Town. The results show that the clearance condition of Niumaoping station site is good ( the maximum occlusion angle is 2.2°), but the electromagnetic test shows that the 9330 MHz and 9359–9374MHz frequency bands need to be avoided. The electromagnetic environment of the drilling hillside station site is pure, but it is seriously blocked by the calyx mountain terrain (the maximum occlusion angle is 15°). It is proposed that the site selection should give priority to meeting the needs of radar low-altitude coverage, taking into account electromagnetic compatibility and construction feasibility.

     

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