Wireless localization method using 4 or more anchor nodes based on RSSI at indoor environment and a recording medium in which a program for the method is recorded

摘要

How is initiated for improving the accuracy of the least squares method based wireless location method using four or more anchor nodes The. Recruitment sum of estimating the distance to the element that contains the value of each anchor node The number of elements in each set is divided into three individual parts. The number of elements position using trilateration for each subset and calculates the estimated value. When using a trilateration, if after correction of the error in estimating the distance through the processing relating to the non-intersecting case accuracy is further improved. By applying a weight to the estimated position value for each element number of anchor nodes and calculates the position estimate for each set of four individual parts. In the same way, a subset having five elements again using (being calculated by using the estimated distance values relating to the location estimated weight values) the position estimation value and associated weight of subsets having four elements previously determined obtaining a position estimate value, by repeatedly performing the above steps, the number of elements to obtain the position estimate for the one or more set top part, obtains the position estimate of the estimated distance obtained when the N value. ;