Radar cross-section
![Typical RCS diagram (A-26 Invader)](/Images/godic/202502/05/Sigma_invader_RCS2650.png")
![The B-2 Spirit was one of the first aircraft to successfully become 'invisible' to radar.](/Images/godic/202502/05/B-2_Spirit_32650.jpg")
![A Visby class corvette incorporating stealth technology](/Images/godic/202502/05/HMS_Helsingborg_22651.jpg")
![Detail of the Forbin, a modern frigate of the French navy. The faceted appearance reduces radar cross-section for stealth.](/Images/godic/202502/05/Cheminee_tribord_du_forbin2651.JPG")
Radar cross-section (RCS) is a measure of how detectable an object is with a radar. A larger RCS indicates that an object is more easily detected.
An object reflects a limited amount of radar energy back to the source. The factors that influence this include: