FIELD: radio engineering, communication.
SUBSTANCE: assessment device of number of terminals includes a device for obtaining location data; a device for obtaining information on time of location of the second location data that immediately precedes the first location data, and the third location data immediately following after the first location data from the location data including one and the same identification information; a calculation device of volume of features of the first location data based on at least two of information on time of location of location data from the first to the third ones; a device for obtaining location data of an observation target, which includes information on time of location after time of the beginning of observation and till time of end of observation; and an assessment device of number of terminals located in the observation area during the observation period, based on scopes of features of location data of the observation target and duration of the observation period.
EFFECT: accurate assessment of number of terminals together with correction of influence of variation of reception intervals.
26 cl, 28 dwg
