VGOS天线地平遮挡角计算及其对UT1测量的影响
上海新建的2台VGOS(VLBI global observing system)天线被其附近原有的大天线遮挡, 为了开展VGOS站网的联合观测, 提出了一种基于天线几何位置关系的地平遮挡角计算方法。根据台站相对位置、天线口径及天线参考点到边缘点的距离等参数, 即可得到VGOS天线的地平遮挡角。天马VGOS天线的最大遮挡角为22.3°, 遮挡天区面积占5°以上天区面积的比值为2.19%;佘山VGOS天线的最大遮挡角为23.4°, 遮挡天区面积占5°以上天区面积的比值为3.14%。通过在观测纲要中添加天线的地平遮挡角信息, 成功实施了VGOS站网的联测。利用VieVS软件仿真分析了天马-维泽尔基...
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| Veröffentlicht in: | Ce hui xue bao 2022-11, Vol.51 (11), p.2285-2293 |
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| container_title | Ce hui xue bao |
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| creator | 吴徳 舒逢春 李金岭 钟胜坚 甘江英 |
| description | 上海新建的2台VGOS(VLBI global observing system)天线被其附近原有的大天线遮挡, 为了开展VGOS站网的联合观测, 提出了一种基于天线几何位置关系的地平遮挡角计算方法。根据台站相对位置、天线口径及天线参考点到边缘点的距离等参数, 即可得到VGOS天线的地平遮挡角。天马VGOS天线的最大遮挡角为22.3°, 遮挡天区面积占5°以上天区面积的比值为2.19%;佘山VGOS天线的最大遮挡角为23.4°, 遮挡天区面积占5°以上天区面积的比值为3.14%。通过在观测纲要中添加天线的地平遮挡角信息, 成功实施了VGOS站网的联测。利用VieVS软件仿真分析了天马-维泽尔基线上VGOS天线的UT1测量精度, 结果表明, 天马VGOS天线的地平遮挡对UT1的测量精度没有显著的影响。 |
| doi_str_mv | 10.11947/j.AGCS.2022.20210314 |
| format | Article |
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| subjects | Antennas Horizon Mathematical analysis Shielding |
| title | VGOS天线地平遮挡角计算及其对UT1测量的影响 |
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