Auto-regenerative shielding
Auto-regenerative shielding was a type of deflector shield used by the Hierarchy on their survey vessels.

In 2378, Lieutenant Commander Tuvok, while piloting a Class 2 shuttle with  Tom Paris, noted that Zet and Nar's starship had auto-regenerative shielding. Paris was glad that they had the element of surprise on their side. When the Hierarchy ship was under phaser attack from both the shuttle and , it was quickly apparent to the Hierarchy crew that the ships shield generator wasn't going to hold for very long. ()

See also
Multi-regenerative security field
Regenerative force field 
Regenerative shield

de: Autoregenerativer Schutzschild
Shield technology