Imitation To achieve radar scanning, using UDP to achieve communication, communication format: 1B communication station number + GPGGA format GPS data. udp server listening port 2323, waiting for the client to send data (server package UDPClinentTest send test data). Base station number defaults to 0, latitude and longitude coordinates stored in the database. udp server-side slave number and latitude and longitude resolution into the database. Use HTML5 canvas label to achieve scanning interface. The data is updated every 1s, and the relative position is displayed in the interface, and the distance from the base station to the base station and the current speed are calculated at the same time. Interface length 1000px, 600px high. (And the other: calculation of GPS coordinates distance formula is a reference online formula, may be wrong, please forgive me)

Filename	Size	Update
GPS-master	0	2015-03-01
GPS-master\.classpath	1178	2015-03-01
GPS-master\.project	1282	2015-03-01
GPS-master\.settings	0	2015-03-01
GPS-master\.settings\.jsdtscope	510	2015-03-01
GPS-master\.settings\org.eclipse.core.resources.prefs	102	2015-03-01
GPS-master\.settings\org.eclipse.jdt.core.prefs	357	2015-03-01
GPS-master\.settings\org.eclipse.wst.common.component	460	2015-03-01
GPS-master\.settings\org.eclipse.wst.common.project.facet.core.xml	403	2015-03-01
GPS-master\.settings\org.eclipse.wst.jsdt.ui.superType.container	49	2015-03-01
GPS-master\.settings\org.eclipse.wst.jsdt.ui.superType.name	6	2015-03-01
GPS-master\README.md	1155	2015-03-01
GPS-master\WebRoot	0	2015-03-01
GPS-master\WebRoot\META-INF	0	2015-03-01
GPS-master\WebRoot\META-INF\MANIFEST.MF	36	2015-03-01
GPS-master\WebRoot\WEB-INF	0	2015-03-01
GPS-master\WebRoot\WEB-INF\classes	0	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Controller	0	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Controller\IndexServlet.class	2131	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Controller\ServerController.class	2564	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Dao	0	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Dao\DBExecutor.class	2888	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Dao\GPSDataDao.class	3133	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Server	0	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Server\DatagramChannelUDPServer.class	2518	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Server\UDPClientTest1.class	2736	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Server\UDPClientTest2.class	2736	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Server\UDPServer.class	1987	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Service	0	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Service\GPSService.class	2068	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Util	0	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Util\GPSDataEntity.class	1414	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Util\GPSDataParse.class	1780	2015-03-01
GPS-master\WebRoot\WEB-INF\classes\Util\UDPReceive.class	2317	2015-03-01
GPS-master\WebRoot\WEB-INF\lib	0	2015-03-01
GPS-master\WebRoot\WEB-INF\lib\fastjson-1.1.1.jar	283300	2015-03-01
GPS-master\WebRoot\WEB-INF\lib\mysql-connector-java-5.1.29-bin.jar	876733	2015-03-01
GPS-master\WebRoot\WEB-INF\web.xml	918	2015-03-01
GPS-master\WebRoot\img	0	2015-03-01
GPS-master\WebRoot\img\1111.png	41929	2015-03-01
GPS-master\WebRoot\img\Background.jpg	391963	2015-03-01
GPS-master\WebRoot\index.jsp	4758	2015-03-01
GPS-master\WebRoot\js	0	2015-03-01
GPS-master\WebRoot\js\jquery.js	273198	2015-03-01
GPS-master\WebRoot\js\main.js	7577	2015-03-01
GPS-master\WebRoot\udpServer.jsp	1415	2015-03-01
GPS-master\gps.sql	987	2015-03-01
GPS-master\src	0	2015-03-01
GPS-master\src\Controller	0	2015-03-01
GPS-master\src\Controller\IndexServlet.java	1744	2015-03-01
GPS-master\src\Controller\ServerController.java	2323	2015-03-01
GPS-master\src\Dao	0	2015-03-01
GPS-master\src\Dao\DBExecutor.java	2275	2015-03-01
GPS-master\src\Dao\GPSDataDao.java	2187	2015-03-01
GPS-master\src\Server	0	2015-03-01
GPS-master\src\Server\DatagramChannelUDPServer.java	1706	2015-03-01
GPS-master\src\Server\UDPClientTest1.java	1982	2015-03-01
GPS-master\src\Server\UDPClientTest2.java	1989	2015-03-01
GPS-master\src\Server\UDPServer.java	1330	2015-03-01
GPS-master\src\Service	0	2015-03-01
GPS-master\src\Service\GPSService.java	1328	2015-03-01
GPS-master\src\Util	0	2015-03-01
GPS-master\src\Util\GPSDataEntity.java	1116	2015-03-01
GPS-master\src\Util\GPSDataParse.java	1615	2015-03-01
GPS-master\src\Util\UDPReceive.java	1738	2015-03-01

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