77 results about "LattisNet" patented technology

The invention provides a coarse and fine matching positioning method based on a WIFI address and field intensity. The method comprises the following steps: 1, carrying out quadrilateral grid or triangular mesh fingerprint point layout; 2, acquiring and preprocessing data, and establishing a fingerprint database; 3, performing clustering and blocking processing on the fingerprint database, and calculating the class center of each fingerprint database class, including a class center signal intensity vector and a corresponding class address vector; 4, roughly matching the access point address information of a real-time WIFI signal with the address vector of each class to realize rough class range estimation; 5, calculating the distance between the real-time WIFI signal intensity value and theWIFI signal intensity center vector in the class obtained after rough matching and the probability, and accurately determining the class so as to enhance the class matching accuracy; and 6, in the accurately determined class set, calculating the final position of the target through a WKNN algorithm. According to the invention, the workload of fingerprint acquisition and the positioning calculation amount can be reduced, and the WIFI positioning precision is improved.