When is the "staggered" mode typically employed in radar operations?

The "staggered" mode in radar operations is primarily employed when there is the suspicion that the radar signal might be jammed. In this mode, the radar alters its transmission pattern to make it more difficult for potential jammers to predict and interfere with the signals. By changing the timing and frequency of the transmission bursts in a non-uniform way, it becomes challenging for jammers to effectively target the radar system, thereby enhancing the reliability of the radar's detection capabilities in an environment where electronic countermeasures could be at play.

In contrast, detecting long-range targets often requires consistent wave patterns and specific parameters that would not typically align with a staggered approach. Transmitting multiple signals is generally associated with a different operational strategy that focuses on improving target tracking and reducing ambiguity, rather than adapting to jamming threats. Calibrating the radar system involves a steady and predictable signal to ensure accuracy in measurements, which runs contrary to the irregular nature of staggered signaling. Thus, utilizing staggered mode specifically addresses the challenges of maintaining effective radar operation in the presence of jamming activities.