public class Gps {
private double wgLat;
private double wgLon;
public Gps(
double wgLat,
double wgLon) {
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 wgLat + "," +
wgLon;
/**
* 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 class PositionUtil {
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 lat,
double lon) {
if (outOfChina(lat, lon)) {
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(mgLat, mgLon);
}
/**
* * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return
* */
public static Gps gcj_To_Gps84(
double lat,
double lon) {
Gps gps =
transform(lat, lon);
double lontitude = lon * 2 -
gps.getWgLon();
double latitude = lat * 2 -
gps.getWgLat();
return new Gps(latitude, lontitude);
}
/**
* 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_lat,
double gg_lon) {
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_lat, bd_lon);
}
/**
* * 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_lat,
double bd_lon) {
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_lat, gg_lon);
}
/**
* (BD-09)-->84
* @param bd_lat
* @param bd_lon
* @return
*/
public static Gps bd09_To_Gps84(
double bd_lat,
double bd_lon) {
Gps gcj02 =
PositionUtil.bd09_To_Gcj02(bd_lat, bd_lon);
Gps map84 =
PositionUtil.gcj_To_Gps84(gcj02.getWgLat(),
gcj02.getWgLon());
return map84;
}
public static boolean outOfChina(
double lat,
double lon) {
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 lat,
double lon) {
if (outOfChina(lat, lon)) {
return new Gps(lat, lon);
}
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(mgLat, mgLon);
}
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(31.426896, 119.496145
);
System.out.println("gps :" +
gps);
Gps gcj =
gps84_To_Gcj02(gps.getWgLat(), gps.getWgLon());
System.out.println("gcj :" +
gcj);
Gps star =
gcj_To_Gps84(gcj.getWgLat(), gcj.getWgLon());
System.out.println("star:" +
star);
Gps bd =
gcj02_To_Bd09(gcj.getWgLat(), gcj.getWgLon());
System.out.println("bd :" +
bd);
Gps gcj2 =
bd09_To_Gcj02(bd.getWgLat(), bd.getWgLon());
System.out.println("gcj :" +
gcj2);
}
}
}
}
转载于:https://www.cnblogs.com/itcx1213/p/7513708.html
相关资源：WGS84坐标间距离计算，WGS84转火星坐标gcj02，火星坐标转百度坐标BD09
