Influence of the Receiver Antenna’Sradom to GPS Positioning Precision
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摘要: 研究了整流罩（radom）对天线相位中心的影响与高度角的耦合关系，比较了相同整流罩在不同截止高度角下对相对定位和PPP的影响，分析了相同截止高度角情况下不同整流罩对相对定位和PPP的影响。结果表明，在一个5°天线相位中心变化区间，整流罩对天线相位中心的影响与高度角成正耦合关系；相同整流罩在不同截止高度角下对定位的影响差别不大；相同截止高度角下不同整流罩在相对定位解算的高程方向最大可引起6 mm的偏差，而在PPP解算的高程方向最大可引起13 mm的偏差。
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关键词:
- 整流罩 /
- 绝对天线相位中心模型 /
- 截止高度角 /
- 相对定位 /
- 精密单点定位
Abstract: The coupled relation between the influence of the radom to the antenna phase center and the elevation angles is studied in this paper. The influence of the same radom to the relative positioning and precision point positioning (PPP) at different elevation angles and that the different radom to the relative positioning and PPP at the same elevation angle are compared and analyzed. Results show, when the variation of the antenna phase center is 5°, the influence of the radom to the antenna phase center has a positive coupled relation to the elevation angle. There is little difference between the influences of the same radom to the positioning at different elevation angles. However, in case of the same elevation angle, the influences of different radom to the relative positioning and PPP results can reach up to 6mm and 13mm respectively in the elevation direction. -
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