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[Positioner] New option filter.max-speed-cp 

The new option positioning.filter.max-speed-cp allows to set an
alternative maximum speed when the mobile is found to be within
cp-reset-distance, instead of completely disabling the filter.
This commit is contained in:
Matteo Cypriani 2014-05-28 16:59:16 -04:00
parent a1c8e0a093
commit a56a8d3d5d
3 changed files with 39 additions and 11 deletions
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14
owlps-positioner/cfg/owlps-positioner.conf
View File

@ -257,16 +257,22 @@ mobile-csv-file = /usr/local/etc/owlps/mobiles.csv
# This option also controls the activation of the filter (0 = disabled).
#max-speed = 0
# With this option set to a positive number, the filtering is temporary
# disabled when the mobile terminal is found to be close enough to a
# capture point. This option determines this "close enough" distance, in
# metres.
# With this option set to a positive number, the maximum speed is
# temporarily set to max-speed-cp (instead of max-speed) when the mobile
# terminal is found to be close enough to a capture point. This option
# determines this "close enough" distance, in metres.
# This is useful in deployments where the system is much more accurate
# when the mobile is close to a capture point, such as underground
# mining tunnels; in such environments, 15 m appears to be a reasonable
# value to start experimenting.
#cp-reset-distance = 0
# Maximal (virtual) speed at which the mobiles can move when they are
# within cp-reset-distance, in km/h. 0 (the default value) corresponds
# to an unlimited speed, i.e. filtering will be completely disabled when
# the mobile is found to be close to a CP.
#max-speed-cp = 0
[output]
# The following options are related to the output of the results.

26
owlps-positioner/positioning.cc
View File

@ -218,10 +218,11 @@ void Positioning::filter(const Request &request, Result &result)
cerr
<< "Filtering (algorithm " << algo_name << "): "
<< "for request sent at " << timestamp
<< " by mobile " << mobile->get_mac_addr() << ", " ;
<< " by mobile " << mobile->get_mac_addr()
<< " (maximum speed is " << max_speed << " km/h), " ;
/* Don't apply filter if the reset distance is configured and the
* mobile is within this distance */
/* Use alternative maximum speed if the reset distance is configured
* and the mobile is within this distance */
// Get the unfiltered coordinates:
const Point3D &pos = result.get_position() ;
float reset_distance =
@ -236,8 +237,23 @@ void Positioning::filter(const Request &request, Result &result)
cerr
<< "the mobile appears to be within the reset distance"
<< " of " << reset_distance
<< " m from a CP; no filtering.\n" ;
return ;
<< " m from a CP" ;
max_speed =
Configuration::float_value("positioning.filter.max-speed-cp") ;
if (max_speed <= 0)
{
if (Configuration::is_configured("verbose"))
cerr
<< " and the alternative speed is \"unlimited\";"
<< " no filtering.\n" ;
return ;
/* Note: saying that the mobile's speed is unlimited is
* another way to say that the filter is disabled. */
}
if (Configuration::is_configured("verbose"))
cerr
<< "; maximum speed set to alternative speed ("
<< max_speed << " km/h).\n" ;
}
}

10
owlps-positioner/userinterface.cc
View File

@ -334,8 +334,14 @@ void UserInterface::fill_positioning_options()
" speed).")
("positioning.filter.cp-reset-distance",
po::value<float>()->default_value(0),
"Disable filtering when the computed position is at this distance (in"
" m) from a CP or closer (0 = never disable filtering).")
"Use max-speed-cp instead of max-speed when the computed position is"
" at this distance (in m) from a CP or closer (0 = never use"
" max-speed-cp).")
("positioning.filter.max-speed-cp",
po::value<float>()->default_value(0),
"Maximal (virtual) speed at which the mobiles can move when they are"
" within cp-reset-distance, in km/h (0 = unlimited speed, i.e."
" completely disables filtering when the mobile is close to a CP).")
;
file_options->add(options) ;