Radar makes the most accurate determination of the __________.

Radar is particularly effective at measuring the distance to a target due to the nature of its operating principles. It emits radio waves that travel at the speed of light until they hit an object, at which point some of the waves reflect back to the radar system. By calculating the time it takes for the radar signals to return, the system can determine the distance very accurately, using the formula: distance = speed × time.

The precision in distance measurement is far superior to that of the other aspects mentioned. While radar can also provide direction by identifying the azimuth angle of the incoming radar return, and it can be used to estimate the size or shape of a target based on the return signal characteristics, these measurements are influenced more by factors such as resolution, beam width, and signal processing, making them less precise compared to the determination of distance.