基于GPS多天线技术的远程自动化高边坡监测系统,很详细的讲解了GPS天线的各种检测。-Multi-antenna GPS-based remote automation technology, high slope monitoring system, explained in great detail the various testing GPS antenna.

1. what kind of noise/errors/uncertainties/unmodeled things affect the GPS precision : AS, SA, orbits, clocks, ionosphere, troposphere, antenna phase centers, centering (tribrachs), etc... 2. how do we evaluate GPS uncertainties ? (difference b