Cartography & PhotogrammetryPercent End Lap & Percent Side LapVertical Aerial Photographs

Percent End Lap & Percent Side Lap

Percent End Lap \[ \%EL = \frac{GD-B}{GD} \times 100 \] Where:
$EL$ = end lap
$GD$ = ground distance
$B$ = Airbase
If end lap is not given, use $\%EL = 60$

Percent Side Lap \[ \%SL = \frac{GD-W}{GD} \times 100 \] Where:
$SL$ = side lap
$GD$ = ground distance
$W$ = flight strips
If side lap is not given, use $\%SL = 30$

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