Master the NGA 21 Facilities Challenge 2026 – Mark Your Success on the Map!

To identify distortions around the signal center, you need to sample measurements from around that center, not just at a single point. By taking readings to the right and to the left at 45-degree angles and then comparing them, you can see if the center is shifted or deformed. If the readings on the two sides don’t match, it indicates distortion or asymmetry in the signal’s center. Measuring only at ground level, directly at the center, or only above ground won’t reveal this lateral distortion, whereas the 45-degree left and right measurements provide a clear cross-section that exposes any offset, helping you locate the true center more accurately.