精密单点定位 （ PPP-Precise Point Positioning ）指得是应用载波相位观测值和IGS等组织提供的高精度的卫星星历及卫星钟差来进行高精度单点定位的方式。
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This paper introduces the precision and current research status of precise point positioning (PPP), analyses its advantage, and the feasibility of PPP used in Shipping Lane Survey was expected.
介绍了精密单点定位的精度和研究现状，分析了其优越性，展望了在航道测量方面的应用可行性。
The mathematic model of GPS dual-frequency precise point positioning and the corresponding program named "GPS-PPP" recently developed by the author were presented.
简要介绍了GPS双频精密单点定位数学模型及自主研制的精密单点定位软件。
The model and possibility of real-time precise point positioning(PPP) are studied based on PANDA.
精密单点定位的实质就是利用精密星历和精密卫星钟改正来实现定位。
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