Gnss monitor: Difference between revisions

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(Replaced content with "Experiments to extract and display GNSS live or recorded data == Screenshot == 300px 300px 300px Left: Satellite movement in the sky above. Mid: Reported movement of the stationary antenna. Right: Number of tracked satellites over the last ~20 hours. == Installation issues == Weather monitor installation | Instal...")
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Left: Satellite movement in the sky above. Mid: Reported movement of the stationary antenna. Right: Number of tracked satellites over the last ~20 hours.
Left: Satellite movement in the sky above. Mid: Reported movement of the stationary antenna. Right: Number of tracked satellites over the last ~20 hours.


== Required packages ==


Install Geographic library from https://geographiclib.sourceforge.io/C++/doc/install.html.
== Installation issues ==
Other libraries should be in the default repository.


libreadline-dev
[[Weather monitor installation | Installation issues]] issues.
libopencv-dev
libgpiod-dev
gpiod
cmake
subversion
aptitude
telnet
ntp
ntpdate
nmap
lsof
libpaho-mqtt-dev
libpaho-mqttpp-dev (if not available, then not needed)
python3-paho-mqtt
python3-opencv
python3-setproctitle
mosquito
mosquitto-dev
mosquitto-clients
libusb-dev
libcli11-dev    (maybe not available)
libgeographiclib-dev
libpaho-mqttpp-dev
qt6-base-dev
sudo apt install libreadline-dev libopencv-dev libgpiod-dev gpiod cmake subversion aptitude telnet ntp ntpdate nmap lsof python3- paho-mqtt libpaho-mqtt-dev python3-opencv python3-setproctitle mosquitto mosquitto-dev mosquitto-clients libusb-dev libcli11-dev libgeographiclib-dev libpaho-mqttpp-dev qt6-base-dev


 
[[Wearher monitor modules | Modules]]
=== For Python install ===
 
pip install geographiclib
or
sudo apt install python3-geographiclib
 
=== Build ===
 
Code is found here (on SVN)
 
svn co svn://repos.gbar.dtu.dk/jcan/svnjca/projekter/gnss_receiver
 
The C++ code is then in qt/gnss_qt
 
Build by
 
cd gnss_receiver/qt/gnss_qt
mkdir -p build
cd build
cmake ..
make -j3
 
Run to create a configuration file
 
./gnss_qt
 
== CMake problem ==
 
=== GeographicLibConfig.cmake ===
 
The find package
find_package(GeographicLib REQUIRED)
in cmake fails, as the file GeographicLibConfig.cmake is not found.
 
This can be fixed by renaming the provided file ''FindGeographicLib.cmake'' by
cd /usr/share/cmake/geographiclib
sudo ln -s FindGeographicLib.cmake GeographicLibConfig.cmake
 
=== XKB ===
 
Missing library, and CMake complains:
 
-- Could NOT find XKB (missing: XKB_LIBRARY XKB_INCLUDE_DIR) (Required is at least version "0.5.0")
 
The solution was to install
 
sudo apt install libxkbcommon-dev
 
This occurred on Raspberry Pi 5 using the 64-bit default OS.
 
== Configure ==
 
After the gnss_qt is run the first time, there should be a default configuration file
 
[service]
logpath = log_%d/
; the '%d' will be replaced with date and timestamp (must end with a '/'). =
max_logging_minutes = 60.0
log_service = true
[mqttin]
broker = tcp://10.59.9.201:1883
context = not used
clientid = ublox9_in
function = nmea/
system = ublox9/
log = true
print = false
use = false
[gnss]
input_use = true
input = /dev/ttyACM0
; input = ../../../log/log_mqtt.txt
log = false
[in]
; set 'saveconfig' to 'false' to avoid autosave =
saveconfig = false
version = 2285 2025-06-26 07:20:46
 
There are two input alternatives:
* From a file (default may be '/dev/ttyACM0') or a logfile generated by the MQTT streamer for NMEA messages. Set 'input_use = true' to use this alternative.
* From a MQTT server that streams the NMEA messages. Change the IP in the [mqttin] group and change to 'use=true'. The NMEA messages are assumed to be in the payload of the message, and the subject as described (subscribing to 'ublox9/nmea/#').

Latest revision as of 07:50, 14 August 2025

Experiments to extract and display GNSS live or recorded data

Screenshot

Left: Satellite movement in the sky above. Mid: Reported movement of the stationary antenna. Right: Number of tracked satellites over the last ~20 hours.


Installation issues

Installation issues issues.

Modules