Which methods can the AN/SPY-1 series of radars use to decrease vulnerability to jamming?

The AN/SPY-1 series of radars employs information-dense wave packets and complex waveforms to enhance their resilience against jamming. Information-dense wave packets allow the radar to transmit a significant amount of data in a single pulse, improving the chances of detecting targets even in the presence of interference. Complex waveforms can change characteristics dynamically, making it more challenging for jammers to effectively disrupt the radar systems. This adaptability ensures that the radar can maintain its operational effectiveness amidst electronic warfare conditions.

While other methods may contribute to radar operation, they do not provide the same level of sophisticated response to jamming threats as the combination of information-dense wave packets and complex waveforms does. For example, static beam forming and signal amplification do not inherently address the jamming issue in the same dynamic manner as the chosen answer. Similarly, frequency hopping, while useful, is not specifically attributed to the functionalities of the AN/SPY-1 series in the context of jamming susceptibility.