Java 使用经度计算两点之间的距离?

这是我的尝试,这只是我的代码的一部分:

final double RADIUS = 6371.01;

double temp = Math.cos(Math.toRadians(latA))

* Math.cos(Math.toRadians(latB))

* Math.cos(Math.toRadians((latB) - (latA)))

+ Math.sin(Math.toRadians(latA))

* Math.sin(Math.toRadians(latB));

return temp * RADIUS * Math.PI / 180;

我正在使用以下公式来获取经度和纬度:

x = Deg + (Min + Sec / 60) / 60)

回答:

上面Dommer给出的Java代码给出的结果略有不正确,但是如果你正在处理GPS轨迹,则小错误加起来。这是Java中Haversine方法的实现,该方法还考虑了两点之间的高度差。

/**

* Calculate distance between two points in latitude and longitude taking

* into account height difference. If you are not interested in height

* difference pass 0.0. Uses Haversine method as its base.

*

* lat1, lon1 Start point lat2, lon2 End point el1 Start altitude in meters

* el2 End altitude in meters

* @returns Distance in Meters

*/

public static double distance(double lat1, double lat2, double lon1,

double lon2, double el1, double el2) {

final int R = 6371; // Radius of the earth

double latDistance = Math.toRadians(lat2 - lat1);

double lonDistance = Math.toRadians(lon2 - lon1);

double a = Math.sin(latDistance / 2) * Math.sin(latDistance / 2)

+ Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2))

* Math.sin(lonDistance / 2) * Math.sin(lonDistance / 2);

double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));

double distance = R * c * 1000; // convert to meters

double height = el1 - el2;

distance = Math.pow(distance, 2) + Math.pow(height, 2);

return Math.sqrt(distance);

}

以上是 Java 使用经度计算两点之间的距离? 的全部内容, 来源链接: utcz.com/qa/408736.html

回到顶部