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GIScience / helios

HELIOS - the Heidelberg LiDAR Operations Simulator - is a software package for interactive real-time simulation and visualisation of terrestrial, mobile and airborne laser scan surveys written in Java.
http://www.geog.uni-heidelberg.de/gis/helios.html
GNU General Public License v3.0
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ULS simulated #30

Closed ShuangnaJin closed 4 years ago

ShuangnaJin commented 4 years ago 
 In using HELIOS, I encountered the following questions:
  1. When I simulated the ULS data using the platform of quadcopter and RIEGL VUX-1UAV scanner, scanning stopped after the flight of the first scanning line, but using the platform sr22 can scan all 6 airlines. Why? (Attachment is my xml file) 2.The beam origin of the scanner "RIEGL VUX-1UAV" is the same as "Optech ALTM 2033"? And what does the "beam origin" mean? 3.How is the platform's coordinate system and where is the 0° of the sensor scanning angle? As my first scanning line output, it had only a little points, from the Jmonkey simulator, I found the emitted laser can hardly hit the ground.
kathapand commented 4 years ago

Hi ShuangnaJin, I think the xml file is not attached? But to compare your specifications to an existing ULS simulation, you might check this repository:

Hämmerle, Martin; Lukač, Niko; Chen, Kuei-Chia; Koma, Zsófia; Wang, Chi-Kuei; Anders, Katharina; Höfle, Bernhard, 2017, "HELIOS full-waveform laser scanning simulation framework. Source code, precompiled version, example files for study of understory tree height scanning and respective output.", https://doi.org/10.11588/data/10101, heiDATA, V1

The beam origin is the position at which the laser beam originates from the sensor, relative to the 3D model (visModel, e.g. "scanners/vux-1uav/vux-1uav.obj"). The 0° of the sensor scanning angle should be normal/orthogonal to the position of the beam origin on the sensor - but consider the orientation of the sensor when specified in the rotation of the beam origin.

kathapand commented 4 years ago

I will close this issue as it is inactive and therefore assumingly does not persist.