GPS accuracy is within how many meters?

GPS accuracy is within how many meters?

• A. 3 meters
• B. 333 meters
• C. 16 meters
• D. 33 meters

Answer: (D)

GPS accuracy measures how close your reported position is to the true position under typical conditions. For standard civilian GPS receivers without augmentation, the expected horizontal accuracy is on the order of tens of meters. In many training materials this baseline is cited as about 33 meters, which is why that option fits best. The other values imply much tighter or much looser accuracy than the common unaugmented GPS provides: 3 meters would require corrections (like WAAS or DGPS), 16 meters is better than baseline but not the standard reference, and 333 meters is far outside typical performance. If you apply differential corrections, accuracy can improve to about 3–5 meters, but without those, 33 meters is the standard figure.

GPS accuracy measures how close your reported position is to the true position under typical conditions. For standard civilian GPS receivers without augmentation, the expected horizontal accuracy is on the order of tens of meters. In many training materials this baseline is cited as about 33 meters, which is why that option fits best. The other values imply much tighter or much looser accuracy than the common unaugmented GPS provides: 3 meters would require corrections (like WAAS or DGPS), 16 meters is better than baseline but not the standard reference, and 333 meters is far outside typical performance. If you apply differential corrections, accuracy can improve to about 3–5 meters, but without those, 33 meters is the standard figure.