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int ZoneWide; ////´ø¿í double longitude1,latitude1, longitude0,latitude0, X0,Y0, xval,yval; double e1,e2,f,a, ee, NN, T,C, M, D,R,u,fai, iPI; iPI = 0.0174532925199433; ////3.1415926535898/180.0; a = 6378245.0; f = 1.0/298.3; //54Äê±±¾©×ø±êϵ²ÎÊý ////a=6378140.0; f=1/298.257; //80ÄêÎ÷°²×ø±êϵ²ÎÊý ZoneWide = 6; ////6¶È´ø¿í ProjNo = (int)(X/1000000L) ; //²éÕÒ´øºÅ longitude0 = (ProjNo-1) * ZoneWide + ZoneWide / 2; longitude0 = longitude0 * iPI ; //ÖÐÑë¾Ïß X0 = ProjNo*1000000L+500000L; Y0 = 0; xval = X-X0; yval = Y-Y0; //´øÄÚ´óµØ×ø±ê e2 = 2*f-f*f; e1 = (1.0-sqrt(1-e2))/(1.0+sqrt(1-e2)); ee = e2/(1-e2); M = yval; u = M/(a*(1-e2/4-3*e2*e2/64-5*e2*e2*e2/256)); fai = u+(3*e1/2-27*e1*e1*e1/32)*sin(2*u)+(21*e1*e1/16-55*e1*e1*e1*e1/32)*sin( 4*u)+(151*e1*e1*e1/96)*sin(6*u)+(1097*e1*e1*e1*e1/512)*sin(8*u); C = ee*cos(fai)*cos(fai); T = tan(fai)*tan(fai); NN = a/sqrt(1.0-e2*sin(fai)*sin(fai)); R = a*(1-e2)/sqrt((1-e2*sin(fai)*sin(fai))*(1-e2*sin(fai)*sin(fai))*(1-e2*sin (fai)*sin(fai))); D = xval/NN; //¼ÆËã¾¶È(Longitude) γ¶È(Latitude) longitude1 = longitude0+(D-(1+2*T+C)*D*D*D/6+(5-2*C+28*T-3*C*C+8*ee+24*T*T)*D *D*D*D*D/120)/cos(fai); latitude1 = fai -(NN*tan(fai)/R)*(D*D/2-(5+3*T+10*C-4*C*C-9*ee)*D*D*D*D/24 +(61+90*T+298*C+45*T*T-256*ee-3*C*C)*D*D*D*D*D*D/720); //ת»»Îª¶È DD *longitude = longitude1 / iPI; *latitude = latitude1 / iPI; } //¸ß˹ͶӰÓɾγ¶È(Unit D)ÕýËãÆ½Ãæ×ø±ê(º¬´øºÅ£¬Unit:Metres) void GaussProjCal(double longitude, double latitude, double *X, double *Y) { int ProjNo=0; int ZoneWide; ////´ø¿í double longitude1,latitude1, longitude0,latitude0, X0,Y0, xval,yval; double a,f, e2,ee, NN, T,C,A, M, iPI; iPI = 0.0174532925199433; ////3.1415926535898/180.0; ZoneWide = 6; ////6¶È´ø¿í a=6378245.0; f=1.0/298.3; //54Äê±±¾©×ø±êϵ²ÎÊý ////a=6378140.0; f=1/298.257; //80ÄêÎ÷°²×ø±êϵ²ÎÊý ProjNo = (int)(longitude / ZoneWide) ; longitude0 = ProjNo * ZoneWide + ZoneWide / 2; longitude0 = longitude0 * iPI ; latitude0=0; longitude1 = longitude * iPI ; //¾¶Èת»»Îª»¡¶È latitude1 = latitude * iPI ; //γ¶Èת»»Îª»¡¶È e2=2*f-f*f; ee=e2*(1.0-e2); NN=a/sqrt(1.0-e2*sin(latitude1)*sin(latitude1)); T=tan(latitude1)*tan(latitude1); C=ee*cos(latitude1)*cos(latitude1); A=(longitude1-longitude0)*cos(latitude1); M=a*((1-e2/4-3*e2*e2/64-5*e2*e2*e2/256)*latitude1-(3*e2/8+3*e2*e2/32+45*e2*e2 *e2/1024)*sin(2*latitude1)+(15*e2*e2/256+45*e2*e2*e2/1024)*sin(4*latitude1)-(35*e2*e2*e2/3072)*sin(6*latitude1)); xval = NN*(A+(1-T+C)*A*A*A/6+(5-18*T+T*T+72*C-58*ee)*A*A*A*A*A/120); yval = M+NN*tan(latitude1)*(A*A/2+(5-T+9*C+4*C*C)*A*A*A*A/24 +(61-58*T+T*T+600*C-330*ee)*A*A*A*A*A*A/720); X0 = 1000000L*(ProjNo+1)+500000L; Y0 = 0; xval = xval+X0; yval = yval+Y0; *X = xval; *Y = yval; } NNîÓÏȦÇúÂʰ뾶£¬²âÁ¿Ñ§ÀïÃæÓÃN±íʾ MΪ×ÓÎçÏß»¡³¤£¬²âÁ¿Ñ§ÀïÓôóX±íʾ faiΪµ×µãγ¶È£¬ÓÉ×ÓÎ绡³¤·´Ë㹫ʽµÃµ½£¬²âÁ¿Ñ§ÀïÓÃBf±íʾ RΪµ×µãËù¶ÔµÄÇúÂʰ뾶£¬²âÁ¿Ñ§ÀïÓÃNf±íʾ¡£¹À¼ÆÓÐÁËÒÔÉϹ«Ê½£¬²»ÓÃÈí¼þ£¬×Ô¼ºÔÚEXCELÖÐÒ²¿ÉÒÔËãÁË£¡£¡£¡ ×ܽᣬʹÓÃÈí¼þµÄǰÌáÒª¶®µÃ»ù´¡ÀíÂÛ£¬¡°Êâ;ͬ¹é¡±£¬²»¹ýÔõôÑùÒ²ÄÜËã³öÀ´£¡ |
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D) void GaussProjInvCal(double X, double Y, double *longitude, double *latitude) { int ProjNo; int ZoneWide; ////´ø¿í double longitude1,latitude1, longitude0,latitude0, X0,Y0, xval,yval; double e1,e2,f,a, ee, NN, T,C, M, D,R,u,fai, iPI; iPI = 0.0174532925199433; ////3.1415926535898/180.0; a = 6378245.0; f = 1.0/298.3; //54Äê±±¾©×ø±êϵ²ÎÊý ////a=6378140.0; f=1/298.257; //80ÄêÎ÷°²×ø±êϵ²ÎÊý ZoneWide = 6; ////6¶È´ø¿í ProjNo = (int)(X/1000000L) ; //²éÕÒ´øºÅ longitude0 = (ProjNo-1) * ZoneWide + ZoneWide / 2; longitude0 = longitude0 * iPI ; //ÖÐÑë¾Ïß X0 = ProjNo*1000000L+500000L; Y0 = 0; xval = X-X0; yval = Y-Y0; //´øÄÚ´óµØ×ø±ê e2 = 2*f-f*f; e1 = (1.0-sqrt(1-e2))/(1.0+sqrt(1-e2)); ee = e2/(1-e2); M = yval; u = M/(a*(1-e2/4-3*e2*e2/64-5*e2*e2*e2/256)); fai = u+(3*e1/2-27*e1*e1*e1/32)*sin(2*u)+(21*e1*e1/16-55*e1*e1*e1*e1/32)*sin( 4*u)+(151*e1*e1*e1/96)*sin(6*u)+(1097*e1*e1*e1*e1/512)*sin(8*u); C = ee*cos(fai)*cos(fai); T = tan(fai)*tan(fai); NN = a/sqrt(1.0-e2*sin(fai)*sin(fai)); R = a*(1-e2)/sqrt((1-e2*sin(fai)*sin(fai))*(1-e2*sin(fai)*sin(fai))*(1-e2*sin (fai)*sin(fai))); D = xval/NN; //¼ÆËã¾¶È(Longitude) γ¶È(Latitude) longitude1 = longitude0+(D-(1+2*T+C)*D*D*D/6+(5-2*C+28*T-3*C*C+8*ee+24*T*T)*D *D*D*D*D/120)/cos(fai); latitude1 = fai -(NN*tan(fai)/R)*(D*D/2-(5+3*T+10*C-4*C*C-9*ee)*D*D*D*D/24 +(61+90*T+298*C+45*T*T-256*ee-3*C*C)*D*D*D*D*D*D/720); //ת»»Îª¶È DD *longitude = longitude1 / iPI; *latitude = latitude1 / iPI; } //¸ß˹ͶӰÓɾγ¶È(Unit