What two dimensions does the PPI scope primarily display?

The correct answer highlights that the PPI (Plan Position Indicator) scope primarily displays bearing and range. This is crucial for radar systems used in maritime and aviation contexts.

In terms of functionality, the PPI provides users with a two-dimensional representation of the surrounding environment. Bearing indicates the direction of a target relative to the observer's position, often expressed in degrees from true north. Range refers to the distance from the observer to the target, allowing for precise positioning. Together, these dimensions are essential for navigating, tracking targets, and making informed decisions based on radar data.

Understanding this interaction between bearing and range in the PPI helps users visualize their location and that of surrounding objects, facilitating better situational awareness and operational effectiveness.