WVR and Multipath Corrections for High Accuracy GPS

高精度 GPS 的 WVR 和多路径校正

• 批准号: 8816976
• 负责人: Christian Rocken
• 金额: $ 5.33万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-15 至 1990-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8816976&HistoricalAwards=false
• 关键词: WVR; Multipath; Corrections; Accuracy; GPS

The Global Positioning System (GPS) has matured to achieve relative positioning accuracies of 0.1 ppm or better. Remaining error sources that limit this accuracy are: (a) the wet tropospheric path delay suffered by the GPS signal and (b) multipath reflections. The PIs will run a GPS baseline experiment in Colorado in order to study both these errors and methods of reducing them. They will investigate the effect of azimuthal variations of the wet troposphere on the determination of GPS baselines. In order to study this effect it is necessary to suppress multipath errors that might mask the tropospheric variations.

全球定位系统(GPS)已经成熟，可以达到0.1ppm或更高的相对定位精度。限制这一精度的其余误差源是：(A)GPS信号遭受的对流层湿路径延迟和(B)多路径反射。PI将在科罗拉多州进行GPS基线实验，以研究这些误差和减少它们的方法。他们将研究潮湿对流层的方位角变化对GPS基线确定的影响。为了研究这种影响，有必要抑制可能掩盖对流层变化的多路径误差。