Which type of Noise Jamming exhibits wide frequency coverage, high power density, but not continuous coverage when emitting?

The correct answer is Swept Spot jamming. This method of noise jamming is characterized by its ability to exhibit wide frequency coverage and high power density. However, it is not continuously covering the spectrum; rather, it emits signals that sweep across specific frequencies in a controlled manner. This sweeping action can disrupt communications or radar by temporarily overwhelming the target frequency bands, making it hard for receiver systems to effectively operate.

The nature of Swept Spot jamming allows for high effectiveness against various kinds of electronic surveillance systems, but because it is not continuous, it may create gaps in coverage that can be exploited by adversaries if they time their transmissions correctly. This selective jamming is important in electronic warfare scenarios where targeting efficiency is critical, and it can conserve resources by not jamming frequencies that are not in use.

In contrast, other forms of jamming such as Spot jamming tend to target very specific frequencies without broader coverage. Barrage jamming provides continuous coverage across a band but may not be as power efficient as Swept Spot jamming. Random jamming provides a level of unpredictability but lacks the focused approach that Swept Spot jamming offers, which is crucial in evading detection and developing countermeasures.