Indoor WLAN fingerprint database multipoint self-adaptive updating method based on radial basis interpolation
A multi-point self-adaptive and update method technology, applied in the field of fingerprint database update, can solve the problems of long calculation time and insufficient positioning accuracy, and achieve the effect of improving positioning accuracy and reducing calculation time overhead
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[0050] Combining 1A and Figure 1B Shown, the implementation steps of the present invention are as follows:
[0051] Step 1: Let the distance between adjacent reference points be a, and divide the target physical environment into P update areas on the premise that the reference points are not updated repeatedly, and the reference points in each update area form a square area;
[0052] Step 2: Define the cut-off area as a circular area with the center of each update area as the center and including the surrounding feedback points, then there are P cut-off areas; let the radius of the cut-off area be R, and the number of feedback points in the cut-off area be n, then The surface density of feedback points is Note that the value intervals of the radius R of the cut-off area and the area density ρ of the feedback point are (0, γ) and [p, q] respectively, and randomly select 3000 combined values for the value intervals of R and ρ;
[0053] Step 3: Let (R, ρ) represent a combin...
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