1. A wireless positioning method using a wireless sensor network, for estimating a position of an unknown node that is a positioning target by using a plurality of anchor nodes arranged at regular intervals, the wireless positioning method comprising: setting a plurality of test nodes at regular intervals on a space formed by some of the plurality of anchor nodes; obtaining a number and position information of anchor nodes within a predetermined distance from the unknown node; detecting at least one test node matching the obtained number and position information of anchor nodes; and estimating a position of the unknown node by calculating an average coordinate value of the detected at least one test node.