java根据经纬度计算距离_java经纬度转换xy坐标公式

反余弦计算方式：

private static final double EARTH_RADIUS = 6371000; // 平均半径,单位：m；不是赤道半径。赤道为6378左右

public static double getDistance(Double lat1,Double lng1,Double lat2,Double lng2) {

// 经纬度(角度)转弧度。弧度用作参数，以调用Math.cos和Math.sin

double radiansAX = Math.toRadians(lng1); // A经弧度

double radiansAY = Math.toRadians(lat1); // A纬弧度

double radiansBX = Math.toRadians(lng2); // B经弧度

double radiansBY = Math.toRadians(lat2); // B纬弧度

// 公式中“cosβ1cosβ2cos(α1-α2)+sinβ1sinβ2”的部分，得到∠AOB的cos值

double cos = Math.cos(radiansAY) * Math.cos(radiansBY) * Math.cos(radiansAX – radiansBX)

+ Math.sin(radiansAY) * Math.sin(radiansBY);

// System.out.println(“cos = ” + cos); // 值域[-1,1]

double acos = Math.acos(cos); // 反余弦值

// System.out.println(“acos = ” + acos); // 值域[0,π]

// System.out.println(“∠AOB = ” + Math.toDegrees(acos)); // 球心角 值域[0,180]

return EARTH_RADIUS * acos; // 最终结果

}

利用第三方jar包计算：

引依赖：

org.gavaghan

geodesy

1.1.3

代码：

public static double getDistanceMeter(GlobalCoordinates gpsFrom, GlobalCoordinates gpsTo, Ellipsoid ellipsoid)

{

//创建GeodeticCalculator，调用计算方法，传入坐标系、经纬度用于计算距离

GeodeticCurve geoCurve = new GeodeticCalculator().calculateGeodeticCurve(ellipsoid, gpsFrom, gpsTo);

return geoCurve.getEllipsoidalDistance();

}

计算结果对比：

public static void main(String[] args) {

//121.717594,31.12055 121.817629,31.090867

// double distance = getDistance(31.12055, 121.717594,31.090867, 121.817629);

double distance = getDistance(29.090295, 106.486654,29.615467, 106.581515);

System.out.println(“距离” + distance + “米”);

GlobalCoordinates source = new GlobalCoordinates(29.090295, 106.486654);

GlobalCoordinates target = new GlobalCoordinates(29.615467, 106.581515);

double meter1 = getDistanceMeter(source, target, Ellipsoid.Sphere);

double meter2 = getDistanceMeter(source, target, Ellipsoid.WGS84);

System.out.println(“Sphere坐标系计算结果：”+meter1 + “米”);

System.out.println(“WGS84坐标系计算结果：”+meter2 + “米”);

}