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Systems and methods for learning wireless transceiver locations and updating a spatially-dependent path-loss model
Systems and methods for learning wireless transceiver locations and updating a spatially-dependent path-loss model
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机译:用于学习无线收发器位置并更新与空间相关的路径损耗模型的系统和方法
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摘要
An indoor positioning system determines the location of a mobile device by comparing measured signal strengths to a database determined during offline calibration. Automated creation, maintenance, and repair of the database are facilitated by accurately characterizing indoor radio signal propagation. Systems and methods for generating spatially-dependent path-loss models are disclosed. In one variation, a computer-implemented method of generating a spatially-dependent path-loss model involves dividing a coordinate-plane representing an indoor environment into non-overlapping tiles; obtaining transmit and received signal strengths of radio signals generated by and measured at a number of wireless access points positioned throughout the indoor environment; calculating vectors which represent the traversal distances of the tiles by each of the radio signals; and solving a system of path-loss equations relating the transmit signal strengths, the received signal strengths, and the distance vectors to determine values for tile-specific path-loss coefficients for each of the tiles within the indoor environment.
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