I-WKNN: Fast-speed and high-accuracy WIFI positioning for intelligent sports stadiums

Based on various existing wireless fingerprint location algorithms in intelligent sports venues, a high-precision and fast indoor algorithm improved weighted k-nearest neighbor (I-WKNN) is proposed. In order to meet the complex environment of venues demand high-speed sampling, this paper proposes an AP selection for offline online stages. characteristics signal intensity distribution asymmetric Gaussian filter This introduces application positioning stadium system, completes data acquisition real-time stadium. Compared with traditional WKNN KNN algorithms, I-WKNN has advantages database processing, environmental noise adaptability, accuracy speed, etc. The experimental results show that obvious time potential smart