| Helicopter-based aerial survey has proven to be a viable alternative to ground surveying. Government and private industry across the country routinely use helicopters to perform map and survey functions.
Accuracy
Helicopters can fly lower and more slowly than fixed wing aircraft, resulting in more accurate photogrammetric measurements. Whereas FAA regulations require fixed wing aircraft to fly at least 1,000 feet above the highest obstacle, helicopters can fly at much lower altitudes. Vertical accuracy for helicopter surveying can achieve +/- 0.05 feet.
Safety
Using helicopters, densely populated, high-traffic corridors can be surveyed accurately and safely. Helicopter surveying reduces traffic disruptions and eliminates risks to field surveyors and citizens. As an added benefit, helicopter surveying can replace on- |