Skycatch Flight App Standard Ground Sampling Distance
The table below shows the GSD per altitude and expected X, Y, and Z accuracy.
|Resolution (GSD)||X, Y-accuracy||Z-accuracy||Altitude|
|1||Approx. 3 cm||Approx. 5 cm||80m|
|2||Approx. 6 cm||Approx. 10 cm||160m|
|3||Approx. 9 cm||Approx. 15 cm||240m|
|4||Approx. 12 cm||Approx. 20 cm||320m|
|5||Approx. 15 cm||Approx. 25 cm||400m|
- The expected accuracy for the X & Y coordinates is 3x GSD horizontally.
- The expected accuracy for the Z coordinate is 5x GSD vertically.
- The rule of thumb for transferring from GSD to Z accuracy is multiplying the GSD value by 5.