GPS-navigating GPS导航
GPS is accurate to within about 15 feet (five metres); fine for navigating a car but too imprecise for pedestrians.
GPS的精度为15英尺(相当于5米)；这对于汽车导航来说是足够了，但是对于定位行人来说就太不精确了。
Very few people are in the habit of asking themselves each morning "What will I measure today? " That's a missed opportunity, like failing to look at the compass or GPS while navigating a vehicle.
很少有人会习惯于每天早晨都问自己一遍“今天我要衡量什么”，其实他们错过了一个机会，就像开车没有看指南针或GPS导航一样。
The map matching algorism, the fusion of the road data in digital map and the positioning data given by GPS can effectively improve the positioning accuracy in navigating system for vehicle.
融合电子地图中的道路数据和GPS所提供的定位数据的地图匹配算法，可以有效地提高车辆导航的定位精度。
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