SR-102 is an easy to use, high performance GPS smart antenna with Data logging capabilities for AVL application, our experienced design provides fast GPS acquisition and excellent tracking performance. It could be used in navigation, timing, and other location-related applications. The Data logging function provides navigation Data containing latitude, longitude, height, velocity, date, and time etc. It supports more than 400,000 Data records or up to 300 days for logging intervals of 1 minute. A separate management tool running on PC windows could be used to change logging intervals and retrieve logging Data. The logging Data could be displayed on tools such as Google Earth.