Corridor mapping lines
Parallel flight lines that follow a centerline (a pipeline, road, or river) across a corridor width, with the line count from your spacing, flown back and forth.
Planning and education aid. Not for primary navigation. Full disclaimer
Experimental: not yet fully verified. How results are checked
Fly 3 lines along 5.593 km of centerline, 16.88 km in all.
- Centerline length
- Path length
Provenance
- Computed by
- drone.mission.corridor 1.0.0, core 0.1.0
- Model
- Offset polylines on a local transverse Mercator plane, mitered at bends (miter length limited to 4× the offset), offsets (k − (n − 1)/2)·spacing
- Accuracy
- Offsets are exact on the plane, true to within 1e-7 across a few kilometers.
- Notes
- 1 shown with the answer
- Cites
- Wolf, P. R., Dewitt, B. A., and Wilkinson, B. E., McGraw-Hill, Elements of Photogrammetry with Applications in GIS
Something look off?
How we got thisFormula, worked example, sources, and proof
Model: Offset polylines on a local transverse Mercator plane, mitered at bends (miter length limited to 4× the offset), offsets (k − (n − 1)/2)·spacing
Accuracy: Offsets are exact on the plane, true to within 1e-7 across a few kilometers.
Worked example: A 120 m corridor at 52.5 m spacing. Source: add-drone-suite corridor scenario: three lines at -52.5, 0, and +52.5 m.
You enter
- Centerline
- 40, -105 40.02, -104.98 40.03, -104.95
- Line spacing
- 52.5 m
- Corridor width
- 120 m
You get
- Lines
- 3
- Centerline length
- 5.593 km
- Path length
- 16.88 km
Review: Not yet independently reviewed by a Part 107 remote pilot.
Last verified: 2026-09-18, when a maintainer last confirmed this tool's sources at the issuer. See the sources ledger.
Status: version 1.0.0, core 0.1.0. See this tool in the verification report.
Checked against: 5 golden test vectors (download the test vectors, each with its source and tolerance). See how results are checked and every source.
Sources
- Elements of Photogrammetry with Applications in GIS, Wolf, P. R., Dewitt, B. A., and Wilkinson, B. E., McGraw-Hill, 4th edition. Chapter 18 (flight planning: flight lines, photo spacing, number of photos). Read free.
Experimental means this tool has not yet met the stable bar: at least 20 golden vectors, differential tests, and an independent worked example.