What does resection in navigation involve?

Resection in navigation is a technique used to determine one's current position by referencing known locations. This method involves measuring the angle or azimuth toward a landmark that has a predetermined location on a map. By plotting the angle to various known points, a navigator can triangulate their position accurately. This is particularly useful in environments where GPS signals may be unavailable or unreliable.

The other options do not accurately describe the resection process. Measuring distance using a map scale refers to calculating linear distances rather than determining a position. Calculating slope and elevation of terrain is related to terrain analysis, not directly to positional navigation. Using a compass to verify bearings is a navigational aid but does not constitute the process of resection itself, which specifically involves finding one's location using known points on a map and their respective angles. Understanding the resection method is critical for effective navigation and positioning, especially in tactical situations.