4.5 Output files

As indicated in the tutorial of wxGBTool, Nero2d can generate two types of output: either the field components along a line, circle or a grid, or the bistatic radar cross section (RCS).

The first type generates a file which contains 12 columns of numbers, i.e. the complex Ex, Ey, Ez, Hx, Hy and Hz values. The real and imaginary parts are placed in consecutive columns, separated by a tab.

The values for the incident fields and scattered fields are written seperately. The incident fields' filename contains `_in' in their filename, while the scattered fields' filename contains `_sc' in their filename.

The radar cross section output yields a single column real values.

• For output along a line, the value on the first row corresponds with the starting point of the line, while the last row corresponds with the final point. The output filename is lineXX_??.ldf (line data file).
• For output along a circle, the circle is traversed in a counter-clockwise fashion, starting a the right-most point of the circle. The output filename is circleXX_??.cdf (circle data file).
• For output along a grid, the output file contains a matrix with resX times resY number of complex values. The output filename is bitmapXX_??.bdf (bitmap data file) and can be processed into a bitmap (.bmp) file using wxGBTool.

The bistatic radar cross section (RCS) can also be calculated. For the output file to contain meaningful results, it is required that the incident field be a single plane wave in the positive x-direction (the default setting for plane wave). The output file contains a set of double precision values along equidistant angles (compare to electrical field along a circle). The output file is rcsXX.rdf (radar cross section data file).

These files can be imported into your favorite tool, e.g. Matlab.