Radar cross-section layered calculation method of ship target within atmospheric duct range
A technology of radar cross section and atmospheric waveguide, which is applied in the calculation field of radar cross section
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[0077] Assuming that for a certain type of ship target, first use 3DSMAX three-dimensional modeling software for geometric modeling, set the radar observation frequency to 9GHz, and the ship’s random swing angle on the sea surface to 3 degrees, then the target geometric model is divided The step length can be selected as l=1m (at this time klγ 0 ≈9>>1 satisfies the incoherent condition). Perform a simple geometric approximation for each divided part, and then determine the target occluded surface. Use 3DSMAX software to export the unoccluded part to a certain dihedral angle in the geometric model of the ship (name: twoangle rl 13) As an example, the specific format of the exported ASE file is:
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[0079]
[0080] Calculate the RCS value of each derived component. At this time, if each component is incoherently superimposed according to the height, for example, the height is selected as 1 meter, and the average RCS is fitted with the height after incoherent superposition ac...
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