摘要
定量分析了对流层改正模型对南极精密定位精度的影响,通过使用实际气象数据的对流层改正模型,在同等截止高度角下可以提高定位精度;相应地,在保持同等定位精度的情况下,使用该方法可以降低GPS数据的截止高度角,使其从常规的15°降低到5°,即利用更多的低高度角卫星的观测数据,提高定位的可靠性。
Based on quantitative analysis for influence of tropospheric corrected model on the positioning preci-sion in the Antarctic GNSS positioning, a tropospheric corrected model with real meteorological data is proposed to improve positioning precision in the same elevation cut-off angle. Correspondingly, under the condition of keeping the same positioning precision, the model can reduce elevation cut-off angle from 15 degrees to 5 degrees, which means that more lower elevational observations can be used to improve positioning precision and reliability signifi- cantXy.
出处
《大地测量与地球动力学》
CSCD
北大核心
2014年第1期104-107,共4页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(41020144004)
关键词
GPS
极地定位
对流层延迟
模型改正
高度角
GPS
Antarctic positioning
tropospheric delay
model correction
elevation angle
