java地理方位角度计算

计算方位角度

从一个坐标到另一个坐标的方位角度.

GIS地理 方位角，正北作为0度基线，顺时针旋转。

/*** GIS方位角度，正北为0度，顺时针旋转** @param lat1 坐标1纬度* @param lon1 坐标1经度* @param lat2 坐标2纬度* @param lon2 坐标2经度* @return 坐标1到坐标2方位角度*/public static double bearing(double lat1, double lon1, double lat2, double lon2) {double longitude1 = lon1;double longitude2 = lon2;double latitude1 = Math.toRadians(lat1);double latitude2 = Math.toRadians(lat2);double longDiff = Math.toRadians(longitude2 - longitude1);double y = Math.sin(longDiff) * Math.cos(latitude2);double x = Math.cos(latitude1) * Math.sin(latitude2) - Math.sin(latitude1) * Math.cos(latitude2) * Math.cos(longDiff);return (Math.toDegrees(Math.atan2(y, x)) + 360) % 360;}

测试用例

 //坐标1为北京，坐标2为广州double bearing = LBSUtil.bearing(39.923984, 116.534119, 23.140121, 113.29845);System.out.println(bearing);//190.2221319576134

结果北京到广州的方位角度是190.2221319576134度，参考地图，基本符合事实。