原创

wgs-84,gcj-02,bd-09的相互转换,高德,世界测量,百度坐标系的相互转换,坐标系转换

高德使用的是gcj-02坐标系,百度使用的是bd09坐标系,注意其间的相互转换

1.首先创建一个GPS对象类

public class Gps {
private double wgLat;
private double wgLon;
public Gps(double wgLon, double wgLat) {
setWgLat(wgLat);
setWgLon(wgLon);
}
public double getWgLat() {
return wgLat;
}
public void setWgLat(double wgLat) {
this.wgLat = wgLat;
}
public double getWgLon() {
return wgLon;
}
public void setWgLon(double wgLon) {
this.wgLon = wgLon;
}
@Override
public String toString() {
return wgLon + "," + wgLat;
}
}

2.工具类及测试方法

public class GpsUtil {
    /**
     * 各地图API坐标系统比较与转换;
     * WGS84坐标系:即地球坐标系,国际上通用的坐标系。设备一般包含GPS芯片或者北斗芯片获取的经纬度为WGS84地理坐标系,
     * 谷歌地图采用的是WGS84地理坐标系(中国范围除外);
     * GCJ02坐标系:即火星坐标系,是由中国国家测绘局制订的地理信息系统的坐标系统。由WGS84坐标系经加密后的坐标系。
     * 谷歌中国地图和搜搜中国地图采用的是GCJ02地理坐标系; BD09坐标系:即百度坐标系,GCJ02坐标系经加密后的坐标系;
     * 搜狗坐标系、图吧坐标系等,估计也是在GCJ02基础上加密而成的。 chenhua
     */

        public static final String BAIDU_LBS_TYPE = "bd09ll";

        public static double pi = 3.1415926535897932384626;
        public static double a = 6378245.0;
        public static double ee = 0.00669342162296594323;

        /**
         * 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System
         *
         * @param lat
         * @param lon
         * @return
         */
        public static Gps gps84_To_Gcj02(double lon, double lat) {
            if (outOfChina(lon, lat)) {
                return null;
            }
            double dLat = transformLat(lon - 105.0, lat - 35.0);
            double dLon = transformLon(lon - 105.0, lat - 35.0);
            double radLat = lat / 180.0 * pi;
            double magic = Math.sin(radLat);
            magic = 1 - ee * magic * magic;
            double sqrtMagic = Math.sqrt(magic);
            dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
            dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
            double mgLat = lat + dLat;
            double mgLon = lon + dLon;
            return new Gps(mgLon, mgLat);
        }

        /**
         * * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return
         * */
        public static Gps gcj_To_Gps84(double lon, double lat) {
            Gps gps = transform(lon, lat);
            double longitude = lon * 2 - gps.getWgLon();
            double latitude = lat * 2 - gps.getWgLat();
            return new Gps(longitude, latitude);
        }

        /**
         * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 将 GCJ-02 坐标转换成 BD-09 坐标
         *
         * @param gg_lat
         * @param gg_lon
         */
        public static Gps gcj02_To_Bd09(double gg_lon, double gg_lat) {
            double x = gg_lon, y = gg_lat;
            double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * pi);
            double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * pi);
            double bd_lon = z * Math.cos(theta) + 0.0065;
            double bd_lat = z * Math.sin(theta) + 0.006;
            return new Gps(bd_lon, bd_lat);
        }

        /**
         * * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 * * 将 BD-09 坐标转换成GCJ-02 坐标 * * @param
         * bd_lat * @param bd_lon * @return
         */
        public static Gps bd09_To_Gcj02(double bd_lon, double bd_lat) {
            double x = bd_lon - 0.0065, y = bd_lat - 0.006;
            double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * pi);
            double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * pi);
            double gg_lon = z * Math.cos(theta);
            double gg_lat = z * Math.sin(theta);
            return new Gps(gg_lon, gg_lat);
        }

        /**
         * (BD-09)-->84
         * @param bd_lat
         * @param bd_lon
         * @return
         */
        public static Gps bd09_To_Gps84(double bd_lon, double bd_lat) {

            Gps gcj02 = GpsUtil.bd09_To_Gcj02(bd_lon, bd_lat);
            Gps map84 = GpsUtil.gcj_To_Gps84(gcj02.getWgLon(),
                    gcj02.getWgLat());
            return map84;

        }

        public static boolean outOfChina(double lon, double lat) {
            if (lon < 72.004 || lon > 137.8347)
                return true;
            if (lat < 0.8293 || lat > 55.8271)
                return true;
            return false;
        }

        public static Gps transform(double lon, double lat) {
            if (outOfChina(lon, lat)) {
                return new Gps(lon, lat);
            }
            double dLat = transformLat(lon - 105.0, lat - 35.0);
            double dLon = transformLon(lon - 105.0, lat - 35.0);
            double radLat = lat / 180.0 * pi;
            double magic = Math.sin(radLat);
            magic = 1 - ee * magic * magic;
            double sqrtMagic = Math.sqrt(magic);
            dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
            dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
            double mgLat = lat + dLat;
            double mgLon = lon + dLon;
            return new Gps(mgLon, mgLat);
        }

        public static double transformLat(double x, double y) {
            double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
                    + 0.2 * Math.sqrt(Math.abs(x));
            ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
            ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;
            ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
            return ret;
        }

        public static double transformLon(double x, double y) {
            double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1
                    * Math.sqrt(Math.abs(x));
            ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
            ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0;
            ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0
                    * pi)) * 2.0 / 3.0;
            return ret;
        }

        public static void main(String[] args) {

            // 北斗芯片获取的经纬度为WGS84地理坐标 31.426896,119.496145
            Gps gps = new Gps(119.496145, 31.426896);
            System.out.println("gps :" + gps);
            Gps gcj = gps84_To_Gcj02(gps.getWgLon(),gps.getWgLat());
            System.out.println("gcj :" + gcj);
            Gps star = gcj_To_Gps84(gcj.getWgLon(), gcj.getWgLat());
            System.out.println("star:" + star);
            Gps bd = gcj02_To_Bd09(gcj.getWgLon(), gcj.getWgLat());
            System.out.println("bd  :" + bd);
            Gps gcj2 = bd09_To_Gcj02(bd.getWgLon(), bd.getWgLat());
            System.out.println("gcj :" + gcj2);
        }
}

完成!


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