What is an S band radar?

The S band is a radar-frequency band that uses short waves in the frequency range of 2 to 4 GHz . As mentioned, the main use for this band is for radar and communication.

Shorter wave length greater attenuation and longer wave length less attenuation .

X band radar frequency sub-bands are used in civil, military, and government institutions for weather monitoring, air traffic control, maritime vessel traffic control, defense tracking, and vehicle speed detection for law enforcement . X band is often used in modern radars.