With more base stations, more ground stations, better receivers and better algorithms, GPS can now not only tell you what street you are on, but what part of the street.
随着更多基站、地面接收站的建设， 更好的接收器和算法的发展， GPS现在不仅能告诉你你在哪条街， 还能告诉你你在街道的哪部分。