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在网上收集了一部分关于使用Google API进行手机定位的资料和大家分享： 关于基站定位方面的介绍： http://tech.c114.net/164/a140837.html 开发方面的帮助： http://www.dotblogs.com.tw/kylin/archive/2009/08/09/9964.aspx http://code.google.com/intl/zh-CN/apis/maps/documentation/staticmaps/ http://www.codeproject.com/KB/mobile/DeepCast.aspx http://heresy.spaces.live.com/blog/cns!E0070FB8ECF9015F!7866.entry?wa=wsignin1.0&sa=334916734 以上方法的流程一般如下： 通过RIL获取CellTowerInfo----->通过google api获取经纬度------->转换成54或是地方坐标后在地图上显示位置
本人整理了代码进行了测试，效果不是很好，使用的多普达S700，windows mobile 专业版 6.1 ，地点在上海， 定位结果如下 CELLID=1346 从google获取的坐标31.109，121.368,定位位置到了莘西路上 经过计算与实际位置直线距离在8KM左右
而通过Google Maps在手机上测试当前位置提示精度为18000m，呵呵，这个精度恐怕只能确定在那个城市了，个人认为：原因可能有以下几点： 1.周围基站分布较少或是真的很远，上海的移动2G基站每年的数量都在减少，有时在公司的时候都会出现盲区，信号不是很好 2.直接通过cellid，lac，mcc，mnc等信息在Google上获取的经纬度没有经过误差分析，没有太大的精度可言 3.绕开中国移动运营商进行手机基站定位比较难，人家要靠这个赚钱的，当然也牵涉到国家安全，呵呵 4.RIL相关函数严格来说在Windows Mobile 上面都不是必须被实现的 下面是我的代码和注释，有些地方还是不能理解：
1 public class RIL
2 { 3 //CellTower信息 4 private static string celltowerinfo = ""; 5 6 //通过RIL获取CellID 7 public static string GetCellTowerInfo() 8 { 9 //初始化句柄 10 IntPtr hRil = IntPtr.Zero; 11 IntPtr hRes = IntPtr.Zero; 12 13 //初始化结果变量 14 celltowerinfo = ""; 15 16 //为一个Client初始化RIL 17 hRes = RIL_Initialize(1, 18 new RILRESULTCALLBACK(rilResultCallBack), 19 null, 20 0, 21 0, 22 out hRil); 23 24 if (hRes != IntPtr.Zero) 25 { 26 return "不能初始化RIL"; 27 } 28 29 //获取当前Phone使用的基站信息 30 hRes = RIL_GetCellTowerInfo(hRil); 31 32 waithandle.WaitOne(); 33 34 //解除RIL 35 RIL_Deinitialize(hRil); 36 37 return celltowerinfo; 38 39 40 } 41 42 private static AutoResetEvent waithandle = new AutoResetEvent(false); 43 44 public static void rilResultCallBack(uint dwCode, 45 IntPtr hrCmdID, 46 IntPtr lpData, 47 uint cdData, 48 uint dwParam) 49 { 50 RILCELLTOWERINFO rilCellTowerInfo = new RILCELLTOWERINFO(); 51 52 //将数据lpData从非托管内存块封送到rilCellTowerInfo托管对象中 53 Marshal.PtrToStructure(lpData, rilCellTowerInfo); 54 55 celltowerinfo = rilCellTowerInfo.dwCellID + "-" + rilCellTowerInfo.dwLocationAreaCode + "-" + 56 rilCellTowerInfo.dwMobileCountryCode+"-"+rilCellTowerInfo.dwMobileNetworkCode; 57 58 //将事件状态设置为终止状态，允许一个或多个等待线程继续 59 waithandle.Set(); 60 } 61 62 public delegate void RILRESULTCALLBACK(uint dwCode,IntPtr hrCmdID,IntPtr lpData,uint cbData,uint dwParam); 63 64 public delegate void RILNOTIFYCALLBACK(uint dwCode,IntPtr lpData,uint cbData,uint dwParam); 65 66 //RIL基站信息类 67 public class RILCELLTOWERINFO 68 { 69 public uint cbSize; 70 public uint dwParams; 71 public uint dwMobileCountryCode; 72 public uint dwMobileNetworkCode; 73 public uint dwLocationAreaCode; 74 public uint dwCellID; 75 public uint dwBaseStationID; 76 public uint dwBroadcastControlChannel; 77 public uint dwRxLevel; 78 public uint dwRxLevelFull; 79 public uint dwRxLevelSub; 80 public uint dwRxQuality; 81 public uint dwRxQualityFull; 82 public uint dwRxQualitySub; 83 public uint dwIdleTimeSlot; 84 public uint dwTimingAdvance; 85 public uint dwGPRSCellID; 86 public uint dwGPRSBaseStationID; 87 public uint dwNumBCCH; 88 89 90 } 91 92 /* 调用API 93 * 初始化RIL 94 * MSDN: http://msdn.microsoft.com/zh-cn/library/aa919106(en-us).aspx */ 95 [DllImport("ril.dll")] 96 private static extern IntPtr RIL_Initialize(uint dwIndex, RILRESULTCALLBACK pfnResult, RILNOTIFYCALLBACK pfnNotify, uint dwNotificationClasses, uint dwParam, out IntPtr lphRil); 97 [DllImport("ril.dll")] 98 private static extern IntPtr RIL_GetCellTowerInfo(IntPtr hRil); 99 [DllImport("ril.dll")] 100 private static extern IntPtr RIL_Deinitialize(IntPtr hRil); 101 102 }
之后是有关通信方面的，通过基站信息获取经纬度（GOOGLE API）
代码
public class GMM
{ static byte[] PostData(int MCC, int MNC, int LAC, int CID, bool shortCID) { byte[] pd = new byte[]{ 0x00, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1b, 0x00, 0x00, 0x00, 0x00, // Offset 0x11 0x00, 0x00, 0x00, 0x00, // Offset 0x15 0x00, 0x00, 0x00, 0x00, // Offset 0x19 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Offset 0x1f 0x00, 0x00, 0x00, 0x00, // Offset 0x23 0x00, 0x00, 0x00, 0x00, // Offset 0x27 0x00, 0x00, 0x00, 0x00, // Offset 0x2b 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }; bool isUMTSCell = ((Int64)CID > 65535); if (isUMTSCell) Console.WriteLine("UMTS CID.{0}", shortCID ? "Using short CID to resolve." : ""); else Console.WriteLine("GSM CID given."); if (shortCID) CID &= 0xFFFF; /* Attempt to resolve the cell using the if ((Int64)CID > 65536) /* GSM: 4 hex digits, UTMS: 6 hex digits */ if ((Int64)CID > 65536) pd[0x1c] = 5; else pd[0x1c] = 3; pd[0x11] = (byte)((MNC >> 24) & 0xFF); pd[0x12] = (byte)((MNC >> 16) & 0xFF); pd[0x13] = (byte)((MNC >> 8) & 0xFF); pd[0x14] = (byte)((MNC >> 0) & 0xFF); pd[0x15] = (byte)((MCC >> 24) & 0xFF); pd[0x16] = (byte)((MCC >> 16) & 0xFF); pd[0x17] = (byte)((MCC >> 8) & 0xFF); pd[0x18] = (byte)((MCC >> 0) & 0xFF); pd[0x27] = (byte)((MNC >> 24) & 0xFF); pd[0x28] = (byte)((MNC >> 16) & 0xFF); pd[0x29] = (byte)((MNC >> 8) & 0xFF); pd[0x2a] = (byte)((MNC >> 0) & 0xFF); pd[0x2b] = (byte)((MCC >> 24) & 0xFF); pd[0x2c] = (byte)((MCC >> 16) & 0xFF); pd[0x2d] = (byte)((MCC >> 8) & 0xFF); pd[0x2e] = (byte)((MCC >> 0) & 0xFF); pd[0x1f] = (byte)((CID >> 24) & 0xFF); pd[0x20] = (byte)((CID >> 16) & 0xFF); pd[0x21] = (byte)((CID >> 8) & 0xFF); pd[0x22] = (byte)((CID >> 0) & 0xFF); pd[0x23] = (byte)((LAC >> 24) & 0xFF); pd[0x24] = (byte)((LAC >> 16) & 0xFF); pd[0x25] = (byte)((LAC >> 8) & 0xFF); pd[0x26] = (byte)((LAC >> 0) & 0xFF); return pd; } //GSM CID part */ /// <summary> /// 通过基站信息获取经纬度 /// </summary> /// <param name="args"></param> /// <returns></returns> static public string GetLatLng(string[] args) { if (args.Length < 4) { return string.Empty; } 全部评论
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