Sometimes traditional aerial surveying doesn't provide the level of accuracy required for roadway improvement projects, but the main alternative - ground surveying - can be dangerous in areas with heavy traffic. Furthermore, keeping surveyors safe while obtaining accurate data often requires closing lanes and major traffic disruptions, which costs time and money.

In situations like these, Qasco can provide helicopter surveys and mapping with accuracies comparable to ground survey but in a safer and more cost-effective environment.

Recent Projects:

> Airport Link tunnel in Brisbane

> Ipswich Highway bypass in Qld

> Bruce Highway upgrade in North Qld

> Pacific Highway upgrade in Qld & NSW

Qasco low altitude helicopter surveys are accurate:

Helicopters are allowed to fly at lower altitudes and slower speeds than traditional fixed-wing aircraft. The average scale of Qasco helicopter-based photography ranges from 1:600 to 1:1000, which is 3x lower than traditional aerial photography.

This enables Qasco to achieve 10mm to 20mm precision in x-y-z and is comparable to results obtained by conventional ground survey methods. Our accuracies have been field tested and found to be reliable.

Our low altitude helicopter surveys are safe and cost-effective:

Since the accuracy of helicopter-based aerial surveys is comparable to field surveys, the need for survey crews within dangerous transport corridors can be eliminated. Removing surveyors from roads also improves the safety of motorists due to fewer lane closures and less traffic congestion. This also reduces the costs associated with traffic management and safety regulations, thus making low altitude helicopter surveys and mapping an attractive financially viable option.

For more information on our aerial photography, visit the following links:

> Qasco Aircraft Fleet
> Aerial Survey Camera and Film
> Gallery and Image Library