The invention discloses an indoor positioning method based on channel
response frequency domain and airspace combined
processing. The method comprises the following steps: discretizing a positioning area in an indoor environment and generating a plurality of reference points in an offline stage; enabling the mobile terminal to move at a
constant speed at each reference point, acquiring channel information in two mutually perpendicular directions, preprocessing the acquired data, extracting corresponding
fingerprint characteristics from the acquired data, and establishing an offline
database byutilizing a relation between fingerprints in the mutually perpendicular directions; collecting the
signal data of an unknown motion terminal in the online positioning stage, extracting the online
fingerprint information, matching the
fingerprint information of a to-be-tested terminal with fingerprints in an offline
database, calculating the position of the to-be-tested terminal according to the
similarity criterion, and outputting the position information of the to-be-tested terminal through the offline
database and completing the indoor positioning. Rapid positioning of a target is realized,and the positioning time is effectively reduced. Position
estimation is carried out by using a WKNN
algorithm, so that more accurate positioning is realized.