Matching locating method based on wireless channel frequency domain amplitude response
An amplitude response, wireless channel technology, applied in the field of wireless signal to determine its position, can solve problems such as affecting positioning accuracy, limiting positioning accuracy, low sensitivity to spatial position differences, etc.
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[0048] Taking the two-dimensional positioning of a target to be located in a square room with a side length equal to 60 meters as an example, four signal receivers p 1 ,p 2 ,p 3 ,p 4 Set at the coordinates (10, 10), (10, 50), (50, 10) and (50, 50) respectively, the unit is meter (m); and the sampling is set at intervals of 0.5×0.5 meters throughout the room points, a total of 14400 nodes;
[0049] A. Establish a positioning database: place a transmittable signal on the node coordinates (0.5, 0.5) of the positioning grid as:
[0050] s ( t ) = 1 A d ( t )
[0051] The library building signal source S,
[0052] Where: t=1, 2, ..., 256; d ( t ) = Σ ω = 1 ...
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