What is the key aspect of ECM's success in relation to radar?

The key aspect of ECM's (Electronic Countermeasure) success in relation to radar is the power of the jamming signal. Effective jamming relies on the ability to overwhelm or mask the radar signals that are trying to detect an object. This means that if the jamming signal is powerful enough, it can prevent the radar from accurately receiving or processing the signals reflected from targets, essentially rendering the radar ineffective.

In the context of electronic warfare, the ability to disrupt radar systems hinges significantly on the strength and sophistication of the jamming efforts. A robust jamming signal can create confusion and mislead the radar operators, giving a strategic advantage to the user of ECM technology. This characteristic is critical in modern military operations, where stealth and the ability to evade detection can sway the outcome of engagements.