function Invariant_Line_Feature_Matching ___DEscr iptION___ Compare segmented line pairs as 4 dimentional line pair features ( Q1 , Q2 , Drelative , D? ) Example : Invariant_Line_Feature_Matching ( ) ___REFERENCE___ Paper 1 : L

一个相当好用的matlab函数，由美国国家可再生能源实验室科研人员设计，可以计算太阳的直射维度和方位角。只要输入时间、观测地点即可。 -This algorithm is based on numerical approximation of the exact equations. The authors of the original paper state that this algorithm should be precise at+/- 0.0003 degrees.

计算机方法实现线性方程组的求解，输入系数矩阵即可得到结果，并杨正结果的正确性。-Computer methods to achieve the solution of linear equations, enter the coefficient matrix can be obtained results, and the correctness of the results of Yang.