Which method of target location requires the observer's location?

The polar method of target location is particularly distinctive because it relies on the observer's location to establish the target's position relative to them. In this method, the observer measures the range (distance) to the target and the direction (angle) from their location to the target. These two measurements allow for accurate targeting based on the observer's specific position on the map.

This method is highly effective in dynamic situations where distances may change rapidly or when operating in unfamiliar terrain. It is especially crucial in scenarios where precise targeting is necessary, and knowing the observer's coordinates is essential to accurately communicate the target's location for effective fire support.

In contrast, other methods, such as grid and map reference, do not require the observer's own coordinates, as they are based on established point locations or predetermined grid systems. The shift from a known point method also relies on a baseline known location rather than the observer's specific position, making the polar method unique in its dependence on the observer's location.