关于RCS计算

1网格剖分时的参数具体含义是什么?它对计算有什么具体影响?
2采用PO法计算RCS进行网格剖分时设置的网格参数最小为波长的几分之一?
3由于FEKO5.2  32位版限制了内存（<2G）最大能计算多大电大尺寸物体的RCS?

20-30万网格吧

我进行网格剖分时剖到2，000，000多网格，但没到过八位数

1. 网格过大无法产生请在 EDITFEKO 中产生 RM CARD来将Mesh加密。
2. 在配合 MLFMM 。
3. 假使频率跟波常合乎高频近似法的法则时，可用 PO or UTD 去求解。
4. UTD 限制蛮多的，但是求解速度超快.且超省内存，我见过文献一台战斧级的军舰加上数组天线(By AR Card)只要 8.X 秒就求解完成。

UTD算法那里有例子?

"C:\Program Files\FEKO\doc\UserManual.pdf"
16 Dipole in front of a plate modelled using first UTD and then PO
Keywords: UTD, PO, dipole, radiation pattern, far field, electrically large plate
A dipole in front of an electrically large square plate is considered. In the first case, the dipole is solved with the MOM and the plate with the UTD. The plate is then modified so that it can be solved with PO. The MoM/UTD and MoM/PO hybrid solutions demonstrated here are faster and require less resources than the full MoM solution.
note. July 2007 FEKO User’s Manual
DESCRIPTION OF THE GEOMETRY CARDS 11-113
11.44 UT card
With this command the parameters for the Uniform geometric theory of diffraction (UTD) for polygonal plates and Geometrical optics for dielectrics (GO) are defined.
........................
When no UT card is used, the following default values apply:
• Max no. of ray interactions: 3.
• Write debug information to *.dbg: unchecked.
• Export UTD ray data for later viewing: unchecked.
• Select ray contributions includes.
– GO (direct and reflected rays, shadowing).
– Edge and wedge diffracted rays.
– Corner diffraction terms.
Increasing the type and number of ray interactions increases accuracy but computation
time as well. The user should therefore make a compromise between the number of ray
interactions and the ray contributions. Choices made in this card should be made on
physical considerations to get optimal use from the UTD formulation.
The following restrictions apply for the hybrid MoM/UTD:
• No dielectric bodies or dielectric ground.
• Only perfectly conducting flat polygonal plates or a single cylinder allowed in the
UTD region.
• No UTD and PO at the same time.