Indoor parking area vehicle locating and searching method based on nearest neighbor
A technology of nearest neighbors and parking lots, applied in positioning, traffic control system of road vehicles, measuring devices, etc., can solve the problems of large error, increased calculation amount, fast signal loss, etc., to eliminate the influence of positioning accuracy and hardware expenditure The effect of reducing and improving the positioning accuracy
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.
[0023] Assume a LANDMARC-based positioning system, in which there are M readers (Readers) (generally M≥3) and N reference tags (rf_Tag) arranged evenly in the system. The energy level of the reader is divided into 1-8 levels; the position coordinates of the reference tag are known, which are used to assist positioning to improve the positioning accuracy of the target tag, that is, the tag to be located (Tag). At this moment, the description of the method proposed by the present invention is as follows:
[0024] (1) Define each tag (including Tag and rf_Tag) as an 8-bit binary string, and initialize each bit as "0".
[0025] (2) Every 30s, all readers (Reader) perform a circular scan from 1 to 8 energy levels. When a target tag Tag_p to be located is read by reader j at po...
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