Write results computed by several algorithms for the same request
simultaneously for a given medium. This allows to have only one CSV line
for a given request.
To achieve that, the class ResultList was created.
PositioningAlgorithm is the super-class of all positioning algorithms.
RealPosition is the first "positioning algorithm" (it actually computes
nothing, but returns the position declared in a CalibrationRequest).
Matteo Cypriani