Resection is the method of locating your position on a map by determining the grid azimuth to at least two well-defined locations.

Resection is the method of locating your position on a map by determining the grid azimuth to at least two well-defined locations.

• A. Resection
• B. Intersection
• C. Triangulation
• D. Dead reckoning

Answer: (A)

Resection is a positioning method that uses your view of two or more known points to pinpoint where you stand on the map. The idea is simple: you determine the grid azimuth from your unknown position to each of those known points. On the map, from each landmark draw a line in the reciprocal direction of that bearing (the direction from the landmark back toward you). The place where those lines cross is your location. This works because you are somewhere along the line of sight back from each landmark, and the intersection of those lines pinpoints the unique position that lies along both directions. Using two landmarks gives you a fix; adding a third can improve accuracy. Dead reckoning, by contrast, estimates position from speed and direction over time without a current fix. Triangulation and intersection involve related ideas of lines of position but are distinguished by how and from which points the bearings or angles are measured; the definition here specifically matches locating yourself by grid azimuths to known points, which is resection.

Resection is a positioning method that uses your view of two or more known points to pinpoint where you stand on the map. The idea is simple: you determine the grid azimuth from your unknown position to each of those known points. On the map, from each landmark draw a line in the reciprocal direction of that bearing (the direction from the landmark back toward you). The place where those lines cross is your location.

This works because you are somewhere along the line of sight back from each landmark, and the intersection of those lines pinpoints the unique position that lies along both directions. Using two landmarks gives you a fix; adding a third can improve accuracy.

Dead reckoning, by contrast, estimates position from speed and direction over time without a current fix. Triangulation and intersection involve related ideas of lines of position but are distinguished by how and from which points the bearings or angles are measured; the definition here specifically matches locating yourself by grid azimuths to known points, which is resection.