31 lines
837 B
C++
31 lines
837 B
C++
#include "fbcm.hh"
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#include "stock.hh"
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#include "configuration.hh"
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Result FBCM::compute(const Request &_request)
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{
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// If the autocalibration is activated, we have to regenerate the
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// Friis indexes each time we calculate a position
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if (Configuration::bool_value("positioning.generate-reference-points"))
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Stock::update_all_friis_indexes() ;
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return MultilaterationAlgorithm::compute(_request) ;
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}
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float FBCM::estimate_distance(const Measurement &measurement)
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{
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double constant_term = make_constant_term(measurement) ;
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const float &average_ss = measurement.get_average_ss() ;
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const AccessPoint *ap = measurement.get_ap() ;
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return pow(10, (constant_term - average_ss) /
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(10 * friis_index(ap))) ;
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}
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inline float FBCM::friis_index(const AccessPoint *const ap) const
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{
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return ap->get_friis_index() ;
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}
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