To calculate the radar cross section (RCS) of a spherical object given its diameter and radar frequency in GHz, one can refer to various online resources that provide detailed methodologies. Key factors influencing RCS include the object's size, shape, and the wavelength of the radar signal. The Wikipedia page on radar cross section and a Navy handbook on RCS offer foundational information and formulas for these calculations. Understanding the relationship between frequency and wavelength is crucial for accurate RCS determination. Utilizing these resources will enhance comprehension of radar cross section calculations for spherical objects.