DDM到DD地理坐标转换算法

DDM to DD Geographic Coordinate Conversion Algorithm

我已经用http://www.pgc.umn.edu/tools/conversion转换

52 37.9418 牛 01.18.8020 英语 (我认为是 DDM?)

纬度 52.632363 经度 1.313367

这似乎非常准确,我自己也尝试过计算来转换这些值,但它们似乎从来都不准确。

http://en.wikipedia.org/wiki/Geographic_coordinate_conversion

此转换背后的数学原理是什么?

//Parsing the DDM format is left as an excersize to the reader,
//  as is converting this code snippet into a usable function.
double inputDegrees = 52;
double inputMinutes = 37.9418;
double latitude = inputDegrees + (inputMinutes/60);  // 52.632363