Question about UE height in AODT

Accelerated Computing Aerial Forum
1

Hi, community:

I am working on AODT v1.1.0 deployed on Ubuntu 22.04 with single RTX6000 with colocated set up, i.e.,

+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 550.107.02             Driver Version: 550.107.02     CUDA Version: 12.4     |
|-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA RTX A6000               Off |   00000000:82:00.0 Off |                  Off |
|100%   92C    P2            102W /  300W |    4875MiB /  49140MiB |     42%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+
                                                                                         
+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI        PID   Type   Process name                              GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|    0   N/A  N/A    248830    C+G   ...cal/share/ov/pkg/aodt-1.1.0/kit/kit       4462MiB |
|    0   N/A  N/A    262974      C   ./aodt_sim                                    388MiB |
+-----------------------------------------------------------------------------------------+

The EM simulation goes well and UE height can be modified in UI. However, when I set the height to 1 m or 3 m and press “generate UE” bottom, the UE height will be fixed to 1.1 m or 2.5 m.

My questions are:

  1. Is UE height restricted to between 1.1 m and 2.5 m?
  2. Is the logic of this judgment or modification in the EM solver (libaerial_emsolver.so)?
  3. Can it be changed in aodt_sim as we hope to modify the UE height in a more flexible way.
  4. Does this include ground reflection?
2

@guofachang

  1. Is UE height restricted to between 1.1 m and 2.5 m?
    A: The lower limit of 1.1 meter ensures that the panels do not go below the ground plane. The upper limit of 2.5m is just something reasonable given we only support pedestrian mobility for this release.

  2. Is the logic of this judgment or modification in the EM solver (libaerial_emsolver.so)?
    A. No. The limts are not set in EMSolver. They are set in the UI

  3. Can it be changed in aodt_sim as we hope to modify the UE height in a more flexible way.
    A. Yes, it can be changed in the UI code. See the snippet of a python that shows how to change an attribute in UI.

import os
import re
import shutil

HOME=os.environ.get(‘HOME’)

old=“self.scenario_ue_height_float_model = ui.SimpleFloatModel(min=1.1, max=2.5)”
new=“self.scenario_ue_height_float_model = ui.SimpleFloatModel(min=0.1, max=25)”

file=f"{HOME}/.local/share/ov/pkg/aodt-1.1.0/exts/aodt.properties/aodt/properties/attribute_widget.py"
with open(“attribute_widget.py.org”) as in_file:
with open(file, “w”) as out_file:
for line in in_file:
line = re.sub(re.escape(old), new, line)
out_file.write(line)

    1. Does this include ground reflection?
      5.Yes
3

Thank you for your reply. I will try it later.

4

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