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GPS Stabilisation Experiments and Exif Viewer Tools

SiteSee Support
  • Updated

 

Exif viewer tools: Nomacs

Any exif viewer tool can be used. SiteSee recommends the use of open source tool nomacs. For more information refer to offical wesbite here: https://nomacs.org/ 

Drone M3E

How to fix GPS issue

Requires stabilisation on the ground with a line of sight to the sky.

Power on BUT before flight on the takeoff spot and leave for 2 mins then takeoff

 

Verification of GPS stabilisation done properly

Check the Absolute vs Relative Altitude - Given that the M3E has a “lock” main check would be between the battery changes

 

Experiment

  1. In open area / park turn on drone and let the GPS stabilise

  2. Mark a mission and capture

  3. Bring drone back down

  4. Battery change

  5. Do same stabilisation after battery change

Check the exif data. Then repeat experiment where the stabilisation is not done and compare results.

Drone M2P

How to fix GPS issue

Requires stabilisation for 2 minutes hovering once airborne

 

Verification of GPS stabilisation done properly

Check the Absolute vs Relative Altitude - Check all images across each component (pano, -65 orbit, -45 orbit) as GPS might change during capture

Experiment

  1. In open area / park turn on drone fly up and let it hover for 2 mins

  2. Mark a mission and capture

  3. Bring drone back down

  4. Battery change

  5. Do same stabilisation after battery change

Check the exif data. Then repeat experiment where the stabilisation is not done and compare results

Examples

Drone used: M3E

Image number   Time Absolute Altitude Relative Altitude Altitude Difference
DJI_20241002125020_0001_V_ss8f7b1cc11244 Pano 2/10/24 12:50 PM +311.113 +48.902 262
DJI_20241002125341_0058_V_ssf060c72dd34f Site Overview 2/10/24 12:53 PM +309.685 +47.474 262
DJI_20241002130807_0514_V_ss5f0570ff4f6e Tower Scan 2/10/24 1:08 PM +283.232 +21.021 262
BATTERY CHANGE HERE          
DJI_20241002131236_0001_V_ss4c633235723f Tower Scan 2/10/24 1:12 PM +292.742 +21.548 271
DJI_20241002132049_0253_V_ss2fc7dd0c53fc RAD scan 2/10/24 1:20 PM +304.886 +33.692 271

=> use online exif tool or nomacs image viewer to get the exif data

=> altitude different is same before a battery change but after value is different by 9m (271 - 262) because pilot did not manage battery change properly

=> Solution: Manage battery change better

=> Workaround: Use only one battery when possible to avoid issue occurring

 

 

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