What defines the deliberate use of EM energy to impair the effectiveness of electronic devices?

The deliberate use of electromagnetic (EM) energy to impair the effectiveness of electronic devices is best defined as electronic jamming. This practice involves transmitting misleading signals or noise on the same frequency as the intended electronic communication or radar signals, effectively disrupting the normal operations of the targeted devices.

Electronic jamming aims specifically at hindering the performance of enemy systems by creating interference, thus denying them the use of their electronic capabilities. This can include blocking communication, preventing radar from detecting objects, or interfering with navigation systems. By overwhelming the enemy's systems with false signals or noise, the effectiveness of their electronic devices is significantly diminished.

Other options may relate to similar concepts, but they do not specifically refer to the act of intentionally disrupting the functionality of electronic devices through EM energy in the same direct way as jamming does.