"The worsening of the Starlink connection observed in Iran in recent days has resulted in a data "packet loss of 30 to 80 percent", according to Victoria Samson, the Chief Director of Space Security and Stability at the Secure World Foundation, a Washington-based think tank. Savoie professor Kave Salamatian says that this loss likely comes from a more sophisticated form of jamming, an “active interference”.
Active interference involves saturating a satellite’s transmission channel. If you send “noise” or a fake signal to a satellite for long enough, then it is possible to disconnect its associated terminals."