Difference between revisions of "Drone Meteorite Searching"
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| − | * Ground resolution: | + | |
| − | * Overlap: | + | == Main Survey Data Collection == |
| + | |||
| + | === Drone Image Survey Requirements === | ||
| + | |||
| + | * Ground resolution: 2 mm /pixel | ||
| + | * Overlap: 10% | ||
* Minimum sun elevation: X degrees (to avoid long shadows creating too many false positives. Ignore if overcast). Use https://www.sunearthtools.com/dp/tools/pos_sun.php to calculate survey start/end times for your location. | * Minimum sun elevation: X degrees (to avoid long shadows creating too many false positives. Ignore if overcast). Use https://www.sunearthtools.com/dp/tools/pos_sun.php to calculate survey start/end times for your location. | ||
* GPS tagging of the images (Exif) | * GPS tagging of the images (Exif) | ||
| Line 13: | Line 17: | ||
| + | === Survey strategy === | ||
| + | |||
| + | When the data is processed, the oldest images are somewhat prioritised. | ||
| + | Hence the higher priority/probability areas should be surveyed first. | ||
| + | |||
| + | The simplest way to achieve this is to cut the search area polygon into 5-20 smaller polygons, depending on the size of the survey. | ||
| + | Try not to make the polygons too elongated. | ||
| − | |||
| Line 26: | Line 36: | ||
=== Data Collection === | === Data Collection === | ||
* Ground resolution: 5 cm /pixel | * Ground resolution: 5 cm /pixel | ||
| − | * Overlap: 70 | + | * Overlap: 70% |
| − | |||
=== Data Processing === | === Data Processing === | ||
| − | WebODM cloud version. | + | * Upload and process the data on WebODM (cloud version). |
| − | + | * Download the data product: Orthomosaic (large geoTiff file). | |
| − | Upload to Mapbox. | + | * Upload geoTiff to Mapbox: https://studio.mapbox.com/tilesets/ |
| + | * Wait for processing, note the Tileset ID, make sure it is public, and put that ID somewhere... TBD | ||
| + | === WebODM setup === | ||
| + | * feature-type: orb | ||
| + | * use-fixed-camera-params: enable | ||
| + | * sfm-no-partial: disable | ||
| + | * skip-3dmodel: enable | ||
| + | * skip-report: enable | ||
| + | * fast-orthophoto: enable | ||
| + | * dsm: disable | ||
== Meteorite Candidates Follow-up == | == Meteorite Candidates Follow-up == | ||
| + | == Webapp Deployment == | ||
| + | See deployment notes: | ||
| + | https://github.com/desertfireballnetwork/dfn-meteorite-drone-webapp/tree/main/webapp | ||
| + | |||
| + | |||
| + | == GPU machine Deployment == | ||
| + | Heavy lifting jobs (Machine Learning training and inference) need a GPU desktop or beefy VM. | ||
| + | This machine just needs to be connected to the internet, and will work as a slave wrt the webapp on the VM. | ||
| + | |||
| + | See install notes: | ||
| + | https://github.com/desertfireballnetwork/dfn-meteorite-drone-webapp/tree/main/mldaemon | ||
| Line 48: | Line 77: | ||
=== Computer things === | === Computer things === | ||
* Laptop + backup laptop. Linux distro, ~1TB free space, SD card reader. | * Laptop + backup laptop. Linux distro, ~1TB free space, SD card reader. | ||
| − | |||
| − | |||
* Spin-up Webapp VM. | * Spin-up Webapp VM. | ||
| − | * Start high-performance GPU computer (lab). | + | * Start high-performance GPU computer (lab), or reserve a g2.large GPU VM on Nectar (https://dashboard.rc.nectar.org.au/project/reservations/). Start the client. |
| − | |||
| + | === Comms === | ||
| + | * Starlink unit. | ||
| + | * Starlink ethernet adapter. | ||
| + | * Re-activate Starlink subscription that should be on pause (ask Hadrien). | ||
| + | * WiFi router with WAN port and swappable antenna (SMA). | ||
| + | * high-gain 2.4GHz WiFi antenna. | ||
| + | * hand-held UHF radios (1 pp) + charger. | ||
=== Power === | === Power === | ||
| Line 63: | Line 96: | ||
=== Drone === | === Drone === | ||
* Drone. | * Drone. | ||
| − | * Drone camera. | + | * Drone camera + lenses. |
* Drone controller. | * Drone controller. | ||
| + | * RTK base station. | ||
* Batteries (charge them just before the trip). | * Batteries (charge them just before the trip). | ||
* Battery charger. | * Battery charger. | ||
* SD cards. | * SD cards. | ||
* Something to make a landing pad (e.g. tarp). | * Something to make a landing pad (e.g. tarp). | ||
| + | * stuff for making ground control points (for the low-res survey) | ||
Latest revision as of 16:59, 15 November 2024
Contents
Introduction
Main Survey Data Collection
Drone Image Survey Requirements
- Ground resolution: 2 mm /pixel
- Overlap: 10%
- Minimum sun elevation: X degrees (to avoid long shadows creating too many false positives. Ignore if overcast). Use https://www.sunearthtools.com/dp/tools/pos_sun.php to calculate survey start/end times for your location.
- GPS tagging of the images (Exif)
- Timezone set to UTC
Note:
Survey strategy
When the data is processed, the oldest images are somewhat prioritised. Hence the higher priority/probability areas should be surveyed first.
The simplest way to achieve this is to cut the search area polygon into 5-20 smaller polygons, depending on the size of the survey. Try not to make the polygons too elongated.
Training Data Collection
Low-resolution Survey
(optional) Needed to make a background map of the survey area (used as a layer on slippy map on Webapp).
Data Collection
- Ground resolution: 5 cm /pixel
- Overlap: 70%
Data Processing
- Upload and process the data on WebODM (cloud version).
- Download the data product: Orthomosaic (large geoTiff file).
- Upload geoTiff to Mapbox: https://studio.mapbox.com/tilesets/
- Wait for processing, note the Tileset ID, make sure it is public, and put that ID somewhere... TBD
WebODM setup
- feature-type: orb
- use-fixed-camera-params: enable
- sfm-no-partial: disable
- skip-3dmodel: enable
- skip-report: enable
- fast-orthophoto: enable
- dsm: disable
Meteorite Candidates Follow-up
Webapp Deployment
See deployment notes: https://github.com/desertfireballnetwork/dfn-meteorite-drone-webapp/tree/main/webapp
GPU machine Deployment
Heavy lifting jobs (Machine Learning training and inference) need a GPU desktop or beefy VM. This machine just needs to be connected to the internet, and will work as a slave wrt the webapp on the VM.
See install notes: https://github.com/desertfireballnetwork/dfn-meteorite-drone-webapp/tree/main/mldaemon
Checklists
Misc
Computer things
- Laptop + backup laptop. Linux distro, ~1TB free space, SD card reader.
- Spin-up Webapp VM.
- Start high-performance GPU computer (lab), or reserve a g2.large GPU VM on Nectar (https://dashboard.rc.nectar.org.au/project/reservations/). Start the client.
Comms
- Starlink unit.
- Starlink ethernet adapter.
- Re-activate Starlink subscription that should be on pause (ask Hadrien).
- WiFi router with WAN port and swappable antenna (SMA).
- high-gain 2.4GHz WiFi antenna.
- hand-held UHF radios (1 pp) + charger.
Power
- Generator.
- Petrol and/or diesel. Usage: ~X litres / 12h
- Battery station + cables.
Drone
- Drone.
- Drone camera + lenses.
- Drone controller.
- RTK base station.
- Batteries (charge them just before the trip).
- Battery charger.
- SD cards.
- Something to make a landing pad (e.g. tarp).
- stuff for making ground control points (for the low-res survey)
