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  1、参数说明 
  双精度类型: 
  圆周率值:PI = 3.14159265358979 
  中央经线:CenterL 
  RHO = 206264.8062471 
  A:ParamA 
  B:ParamB 
  C:ParamC 
  D:ParamD 
  E:ParamE 
  Const ZERO As Double = 0.000000000001 
  80椭球常数 
  椭球长半轴:aRadius   = 6378140 
  椭球短半轴:bRadius   = 6356755.29 
  椭球扁率:ParaAF  = 1/ 298.257 
  椭球第一偏心率:ParaE1 = 6.69438499958795E-03 
  椭球第二偏心率:ParaE2 = 6.73950181947292E-03 
  极点子午圈曲率半径:ParaC = 6399596.65198801 
  k0:Parak0 = 1.57048687472752E-07 
  k1:Parak1 = 5.05250559291393E-03 
  k2:Parak2 = 2.98473350966158E-05 
  k3:Parak3 = 2.41627215981336E-07 
  k4:Parak4 = 2.22241909461273E-09 
  2、算法描述 
  初始化参数 
  Double e; 
  Double a; 
  e = ParaE2; 
  ParaC = aRadius / (1 - ParaAF); 
  ParamA = 1 + (3 / 6) * e + (30 / 80) * Power(e, 2) + (35 / 112) * Power(e, 3) + (630 / 2304) * Power(e, 4); 
  ParamB = (1 / 6) * e + (15 / 80) * Power(e, 2) + (21 / 112) * Power(e, 3) + (420 / 2304) * Power(e, 4); 
  ParamC = (3 / 80) * Power(e, 2) + (7 / 112) * Power(e, 3) + (180 / 2304) * Power(e, 4); 
  ParamD = (1 / 112) * Power(e, 3) + (45 / 2304) * Power(e, 4); 
  ParamE = (5 / 2304) * Power(e, 4); 
  参数初始化结束 
  中央经线转换为弧度 
  CenterL = TransDegreeToArc(CenterL) 
  选定本初子午线为参考经线 
  StandardLat = 0 
  For 起始点 To 倒数第二点 
  由高斯坐标反解计算经纬度值 
  ComputeXYGeo (PntColl.Point(i).y, PntColl.Point(i).x, B, L, CenterL) 
  ComputeXYGeo (PntColl.Point(i + 1).y, PntColl.Point(i + 1).x, B1, L1, CenterL) 
  将经纬度转换为弧度值 
  B = B / RHO 
  L = L / RHO
	 
	
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