Hi,

I would like to study GPS err in altitude,

since Cala suggested problems flying a drone at 3 mts altitude in agriculture.

Laser Developer offers Lidar technology solution.

Let me know your  opinion and suggestions about GPS err in altitude

(2 and 3 system GPS technologies -  GPS, Galileo, Glonass and GPS ground station correction algorithm)

I am just testing 3 sonar sensors built into robot vaccum cleaner for sensitivity and accuracy.

I would like to replace a single pixel Lidar system by 2D/3D Lidar/laser scanner,

known from 3D printing/ 3D scanning objects to be 3D printed.

darius

manta103g@gmail.com