Ground GSD & Flight Planner – H30T / P1 / M3E / M3T

Ground GSD & Flight Planner

Nadir / near-nadir ground mapping based on Pix4D-style GSD. Same cameras as your facade tool: H30T, P1, M3E, M3T.

Hero palette: #1A1A1A · Gold accents

Inputs

Camera Flight altitude AGL (m) Target GSD (cm/px) Forward overlap (%) Side overlap (%) Ground speed (m/s)

Assumes nadir or near-nadir imagery over relatively flat ground (Pix4D style). GSD is computed as GSD = (H × pixel_pitch) / focal_length. Change mode to solve either for GSD or for required altitude.

Outputs

Flight altitude AGL

–

GSD

–

Ground footprint (WxH)

–

Ground footprint area

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Ground footprint diagram (top-down)

Diagram is schematic. Gold rectangle shows one image footprint; dashed lines show approximate flight line spacing and along-track spacing for your current inputs.

Flight line spacing

–

Derived from side overlap & footprint width.

Along-track spacing

–

Derived from forward overlap & footprint length.

Trigger interval

–

Along-track spacing ÷ ground speed.

For very low altitudes or strong terrain variation, this simple model will diverge from reality. Use it as a planning tool, then verify with test passes.