What is the term used when a sensor target is nearing azimuth or elevation tracking limits?

The term "gimbal" refers to the mechanical device that allows the sensor to pivot and maintain its orientation while tracking targets. In the context of sensor operations, a gimbal enables tracking by permitting movement around axes in azimuth (horizontal) and elevation (vertical) directions. When a sensor target approaches the tracking limits set by the gimbal, it indicates that the sensor is reaching its capability limits to continue tracking effectively. This mechanical limitation can restrict the sensor's ability to maintain a stable lock on the target as it moves toward the edges of the gimbal's range of motion.

Understanding the role of gimbals in sensor systems provides insight into the operational capabilities of tracking systems, especially in scenarios where a target may be maneuvering or positioned at extreme angles. Other terms like "Limit Lock," "Boundary Warning," and "Tracking Threshold" might relate to operational limitations or alerts, but they do not specifically describe the mechanical aspect of how the sensor is positioned and tracked. Thus, "gimbal" is the term that most accurately describes the scenario presented in the question.