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AT 309 Week 7 - Advanced UAS Sensor Mapping

johnpkeough
Oct 17, 2024
2 min read

October 4th, 2024

Purdue Turf Farm


This week, we took out the DJI M300s with a variety of sensors to do multiple scans of the area we've focused on for the past few labs. The lab was for demonstration purposes, some people flew but most of us watched as We used a Zenmuse P1 (RGB camera with RTK correction), Zenmuse H20T (Thermal with RTK correction), Sony A7 (RGB camera with PPK correction and base stations), and a Micasense Rededge (Multispectral with PPK correction and base stations). My metadata is incomplete at this point. We were told we would be able to find the info on the flights somewhere, however I have been unable to locate these. I imagine I'll be able to fill in the rest when we process the data, but I'll have to wait until then.


Weather: 60 degrees Fahrenheit, scattered cloud cover that shifted into overcast over the course of the demonstration, 0-5 mph winds


Site Conditions: operating over the parking lots and PTF building, moderate activity from PTF workers


Potential Hazards: Multiple PTF workers present.


Authorizations:

  • LAANC with an altitude ceiling @ 200 ft.


Missions: 

  • M300 H20T w/ RTK

  • M300 P1 w/ RTK

  • M300 Sony A7 w/ PPK

  • M300 RedEdge w/ PPK


Aircraft:

  • 3x DJI Matrice M300


Operation Timing:

  • M300 H20T w/ RTK: 17 min

  • M300 P1 w/ RTK: 12 min

  • M300 Sony A7 w/ PPK: 8 min

  • M300 RedEdge w/ PPK: 7 min


Flight Info:


M300 H20T w/ RTK:

  • Distance: 3386 ft

  • Number of Photos: 184

  • Size of Area: 1.7 acres

  • GSD:5.42 cm/px

  • Overlap/Sidelap: 80%

  • Gimbal Angle: nadir

  • Speed: 2.9 mph


M300 P1 w/ RTK:

  • Distance: 9422 ft

  • Number of Photos: 535

  • Size of Area: 27214 m^2

  • GSD: 0.77cm/px

  • Overlap/Sidelap: 85%

  • Gimbal Angle: nadir

  • Speed: 13.5 mph


M300 A7 w/ PPK:

  • Distance: unknown

  • Number of Photos: unknown

  • Size of Area: unknown

  • GSD: unknown

  • Overlap/Sidelap: 80%

  • Gimbal Angle: nadir

  • Speed: unknown


M300 RedEdge w/ PPK:

  • Distance: unknown

  • Number of Photos: unknown

  • Size of Area: unknown

  • GSD: unknown

  • Overlap/Sidelap: unknown

  • Gimbal Angle: nadir

  • Speed: unknown


Photos:


Figure 1: A collection of photos from the lab.



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