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**OwlPS** (_Owl Positioning System_) is a positioning (localization) system **OwlPS** (_Owl Positioning System_) is a positioning (localization) system
based on the IEEE 802.11 radio network (Wi-Fi), targeting mainly indoor based on the IEEE 802.11 radio network (Wi-Fi), targeting mainly indoor
environments. It uses an infrastructure-centred architecture, which means the environments. It uses an infrastructure-centred architecture, which means
infrastructure does the measurements and computes the mobile terminals' deployed hardware takes care of the measurements and computes the mobile
positions, rather than the terminals computing their own positions (as it is terminals' positions, rather than the terminals computing their own positions
the case for instance with the GPS). (as it is the case for instance with the GPS).
OwlPS implements various positioning techniques and algorithms based on the OwlPS implements various positioning techniques and algorithms based on the
radio signal strength. It features a self-calibration (or autocalibration) radio signal strength. It features a self-calibration (or autocalibration)
mechanism that avoids the time-consuming manual fingerprinting phase and allows mechanism that avoids the time-consuming manual fingerprinting phase and allows
considering dynamic changes of the environment (human, climatic, etc.) when taking into account dynamic changes of the environment (human, climatic, etc.)
computing the location of mobile terminals. when computing the location of mobile terminals.
**This presentation is an excerpt of `doc/owlps.t2t`. Please refer to this file **This presentation is an excerpt of `doc/owlps.t2t`. Please refer to this file
for a more in-depth introduction to OwlPS.** for a more in-depth introduction to OwlPS.**
@ -19,8 +19,7 @@ for a more in-depth introduction to OwlPS.**
## News ## News
OwlPS is not currently actively maintained, as I'm not working on indoor OwlPS is not currently actively maintained, as I'm not working on indoor
positioning at the moment, but I'll happily consider any contribution (or positioning at the moment, but I'll happily consider any patch (or job offer).
job offer).
The `CHANGELOG` file lists the changes that occurred in OwlPS, version by The `CHANGELOG` file lists the changes that occurred in OwlPS, version by
version, since its early stages. version, since its early stages.
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## License ## License
OwlPS is free software, released under the terms of the CeCILL license (GNU OwlPS is free software, released under the terms of the
GPL-compatible). For more detail, please consult `COPYRIGHT.t2t`. [CeCILL](http://www.cecill.info/index.en.html) license (GNU GPL-compatible).
For more detail, please consult `COPYRIGHT.t2t`.
## Note on the t2t file extension ## Note on the `t2t` file extension
Most of the documentation in this repository is provided as text files in the Most of the documentation in this repository is provided as text files in the
**txt2tags** format (`*.t2t` files). You can convert them to various formats **txt2tags** format (`*.t2t` files). You can convert them to various formats

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fingerprinting, and hybrid techniques). //OwlPS Listener// uses the fingerprinting, and hybrid techniques). //OwlPS Listener// uses the
Radiotap header of the network packets to extract the RSS value. It Radiotap header of the network packets to extract the RSS value. It
would be possible to extend the system to work with the TOF (Time of would be possible to extend the system to work with the TOF (Time of
Flight, i.e. the signal propagation time), but that is out of scope for Flight, i.e. the signal propagation time), but that is out of scope for
now (unless someone is willing to contribute). now (unless someone is willing to contribute).
OwlPS features a self-calibration (or autocalibration) mechanism for OwlPS features a self-calibration (or autocalibration) mechanism for
signal strength fingerprinting-based algorithms, that avoids the signal strength fingerprinting-based algorithms, that avoids the
time-consuming manual fingerprinting phase and allows considering time-consuming manual fingerprinting phase and allows taking into
dynamic changes of the environment (human, climatic, etc.) when account dynamic changes of the environment (human, climatic, etc.) when
computing the location of mobile terminals. computing the location of mobile terminals.