The radio wave refraction correction for improving the accuracy of GPS navigation and location is necessary.

因此要提高GPS的定位导航精度，就必须进行电波折射修正。

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The refraction error is produced. The radio wave refraction correction for improving the accuracy of GPS navigation and location is necessary.

因此要提高GPS的定位导航精度，就必须进行电波折射误差修正。

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Scene matching is an important means on navigation and location of aeroplane, and radar image matching is thought a lot by reason of all weather.

景象匹配是飞行器导航与定位的一种重要手段，其中的雷达图像匹配由于具有全天候的特征而受到人们的重视。

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Similarly, your navigation and location-based services are tied to cloud services hosted on servers around the globe.

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Earlier this week, Sina, a leading Chinese online media company, announced a strategic partnership with AutoNavi Holdings Limited, a provider of digital map content and navigation and location-based solutions in China, in an effort to enhance the social, location and mobile offerings of both the companies.

FORBES: Sina Enhances Its Mobile Portfolio By Partnering With AutoNavi

By fusing all this data, the SiRFstarV architecture is able to take location and navigation to the next level, providing precise location and navigation indoors as well as outdoors.

ENGADGET: CSR sharpens indoor and in-car navigation with SiRFstarV, SiRFusion and SiRFprimaII