文件列表:

CG_Files (0, 1999-08-08)
CG_Files\Plate.mat (9690, 1997-07-20)
CG_Files\spherem.mat (68496, 1999-08-08)
fFiles (0, 1999-08-08)
fFiles\gold2.res (3034, 1998-09-07)
fFiles\input.DAT (101, 1999-08-08)
fFiles\input.RES (820, 1999-08-08)
fFiles\input1.dat (9216, 1999-08-08)
fFiles\input2.dat (9216, 1999-08-08)
fFiles\input3.dat (9216, 1999-08-08)
fFiles\inputm.dat (17408, 1999-08-08)
fFiles\mom3d2.exe (220672, 1999-08-08)
fFiles\mom3d2.f (85039, 1998-10-04)
fFiles\mom3d2.o (79708, 1997-10-06)
fFiles\mom3d2.obj (111656, 1999-08-08)
fFiles\nogrv1.res (7380, 1998-10-04)
fFiles\par.inc (40, 1999-08-08)
fFiles\PEPE.COR (0, 1997-01-26)
fFiles\temp.f (82428, 1997-01-26)
mFiles (0, 1999-08-08)
mFiles\box.m (1300, 1998-07-10)
mFiles\box1.m (236, 1997-01-13)
mFiles\boxo.m (1445, 1997-01-12)
mFiles\boxo1.m (1435, 1998-07-10)
mFiles\boxo2.m (240, 1997-01-08)
mFiles\cg.m (25, 1997-01-08)
mFiles\cg1.m (463, 1997-01-08)
mFiles\CG_FFT.m (2601, 1998-09-09)
mFiles\chku.m (448, 1998-07-10)
mFiles\ciias.m (610, 1998-09-29)
mFiles\ciib.m (1599, 1998-08-28)
mFiles\ciie.m (420, 1997-01-08)
mFiles\ciitc.m (698, 1998-08-28)
mFiles\ciitt.m (2368, 1997-01-13)
mFiles\elipso1.m (532, 1997-01-08)
mFiles\elipsoid.m (2014, 1998-07-10)
mFiles\elipsoo.m (1592, 1997-01-09)
mFiles\elipsoo1.m (2495, 1998-07-10)
mFiles\elipsoo2.m (544, 1997-01-08)
mFiles\gcz.m (1302, 1998-07-10)
... ...

Welcome the user oriented version of CG-FFT. I first would like to thank Prof. Catedra from Spain, for his software, which was published in the IEEE book of RCS of complex objects. This software gave volume MoM solution by the CG-FFT method. The original software dealt only with few canonical bodies, and limited polarizations and aspect angles. This version gives you the possibility to calculate the RCS of arbitrary dielectric/metallic bodies and gives you a user oriented graphical user interface (in MATLAB 5.2) with which you can easily enter complex objects. After you have (hopefully) unzipped the zip filer provided, you should have 3 directories, namely CG_Files, mfile and ffiles. The CG_files directory contains the geometry data files. The mfiles contains the MATLAB pre-post processing routines and the ffiles contains the Fortran files which actually calculate the RCS. In order to start the program you must have MATLAB vs. 5 and up. In the MATLAB command prompt you should "cd c:\cg_fft\mfiles" (if you put the program in drive C). and then press "cg_fft". This will open the main command window. In order to define the object geometry, you must first choose from the configuration menu the global and cell size item. Then you can enter the number of hexagons in each canonical direction (which should be 2^n, like 8, 16 etc..) and also enter the hexagon size (it can be different for each canonical direction). It should be noted that the cell size should be not more than 1/10 wavelength of the problem. Problem size can vary from 8*8*8 which will be solved very fast to about 128*128*128 which will take a lot of time and requires PC with a lot of RAM. Of course Nx Ny and Nz does not have to equal to each other, just obey 2^n. After we have defined the problem size we can enter the geometry. This is done in the insert/edit geometry menu. An important note is that the geometry is defined only of the positive quadrate of the XYZ volume. Here you can choose to enter arbitrary boxes, ellipsoids, truncated cones and truncated triangular cylinders. When entering the permittivity, the imaginary part should be positive for normal lossy materials. The ellipsoids can be formed as partial by defining the initial theta and phi angles which they cover. The same goes for the truncated cones. After you have entered a new geometry item you can not erase it but you can edit it and put the permittivity to 0 if you wand to ignore it. Because in the final girding process, all the permittivities are summed up, you can create shell (for instance hollow dielectric sphere) by fist entering a normal dielectric sphere and then entering a smaller sphere with the same permittivity as the previous sphere but with negative signs. After entering the geometry it is time to save it, use the save command in the file menu. Before performing the RCS calculation we must first grid the volume , by using the command "View geometry, Girded data'". This might take some time for large geometry. After girding the geometry, we can calculate the RCS and then view the results when the program stops. Don't forget that you have to have a Fortran compiler in order to run the RCS computation. Also remember to close all windows after you view them. Important Note: This software is provided freely in the internet, however if you appreciate my efforts and want to ask for some changes/support, I require that you send me 50$ for supporting this effort, so I can register you as a certified (valuable...:) ) users. Thanks Aharon Blank blank_@netvision.net.il

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