首先先对DGPS和SBAS做个解释，兄弟们可以自己百度一下： DGPS就是差分GPS（Differential GPS）是在正常的GPS外附加差分改正信号，此改正信号改善了GPS的精度。
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... Diaper sling：简易坐式吊带绳环。 Differential GPS：差动卫星定位仪。 Differential melting：微分融化作用。 ...
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WADGPS Wide Area Differential GPS 广域差分全球定位系统
Static differential GPS 静态差分GPS
LDGPS Local Differential GPS 本地差分GPS
Dynamic differential GPS 动态差分GPS
Differential GPS technology 差分GPS技术
Wide Area Differential GPS 广域差分GPS
Differential GPS-DGPS 差分GPS
以上来源于: WordNet
Differential GPS technique can improve the positioning precision, but it's environmental adaptability is restricted.
差分gps技术虽然可以提高GPS定位的精确度，但缺乏对环境的适应能力。
The major error source of GPS systems, especially of differential GPS, is the multipath signals. It will deteriorate the precision of positioning.
GPS测量，尤其是差分GPS测量，多径信号是主要的误差来源，会引起定位精确度的恶化。
The application of differential GPS in grain production figure shows that differential GPS technology can meet the need of grain production estimate.
差分GPS在谷物产量图生成中的应用表明，差分GPS技术能满足田间谷物测产的需要。
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