To identify the road signs correctly and in real time is an important part of vehicle autonavigation.
对交通标志进行实时、正确的识别，是车辆自动导航中一个重要方面。
2
I need to buy auto GPS navigation, please and contact us.
我们需要购买汽车GPS导航，请与我们联系。
3
This filter can be used in navigation, antenna tracking, and telemetry data processing systems to improve the locating accuracy and to realize the flight mode auto judgment.