The car will be guided by a differential GPS system that corrects errors arising in global positioning satellite signals as they travel through the ionosphere and troposphere.
这款车将遵循差分式全球定位系统以纠正它在电离层和对流层行驶中全球定位卫星信号引起的误差。
If they could not correct for the effects of relativity, Einstein's most famous discovery, GPS signals would accumulate so many errors that their data would be meaningless.
如果全球定位系统不能修正相对论效应——爱因斯坦最著名的发现相对论的产物，这些信号就会积累大量的误差，其数据就会变得毫无意义。
Under the condition of re-observation, the relative errors of measuring area with the pocket GPS could reach 2.0% , which could meet the precision demand of measuring area in forestry practice.
在重复观测的条件下，手持GPS测量面积的相对误差可以达到2.0％，基本满足林业生产中测量面积的精度要求。
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