Added openpyxl to the requirements.

Add requirements file.

Fixed some spacing on the y-axis labels for the contour plot.

Add antenna gain function and update radar list.

Centered the images rather than having them default left

Add the satellite images.

Added discussion about RCS for various satellites.

Added additional reference object sizes to the plot.

Added copyright info.

Minor clean up to the radar spreadsheet.

Create README.md

Added the Jupyter notebook that shows all the good stuff.

Add the radar spreadsheet.

Add some documentation and type hints.

Cleaned up the graphs a bit.