Indoor multipath error determining method and apparatus

Abstract

Embodiments of the present invention provide an indoor multipath error determining method and apparatus. The method comprises the steps of acquiring a to-be-positioned region covered by multiple base stations; dividing the to-be-positioned region into multiple preset grids; determining grid tops of each grid of the multiple preset grids as multiple reference points; measuring TOA Measure at when a signal of each base station of the multiple base stations arrives at the multiple reference points; for each reference point among the multiple reference points, comparing the TOA Measure with preset ideal TOA at when the signal of each base station arrives at each reference point, so as to obtain a multipath error of signal transmission between each reference point and each base station; and according to the multipath error of each reference point and pre-acquired position information of the multiple reference points, using a interpolation algorithm to obtain multipath errors of all points achieving the preset distance accuracy in the to-be-positioned region, wherein the preset distance accuracy specifically refers to a distance between every two points of all the points in the to-be-positioned region.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining indoor multipath errors. Background technique [0002] Among the existing technologies, ILBS (Indoor Location-Based Service, Indoor Location-Based Service) has received extensive attention due to its huge social and economic potential. GPS (Global Positioning System), Beidou, GLONASS (Russian global satellite navigation system), Galileo (European Galileo satellite positioning system) and other GNSS (Global Navigation Satellite System) can provide all-weather outdoor positioning service. For indoor complex environments, GPS and other satellite signals are strongly attenuated due to the obstruction of buildings, etc., which cannot meet the needs of indoor location services. In order to provide signals that satisfy location services in complex indoor environments, a large number of indoor positioning technologies are required. For exa...

AI Technical Summary

Problems solved by technology

However, due to the need to pre-determine the input amount, for different locations or different environmental factors, when it is necessary to collect environmental information in advance, the acquisition difficulty and workload are relatively large, the accuracy of multipath error is relatively low, and manual operation is more troublesome.

[0007] The problems of the prior art are: due to different environmental factors, a large amount of multipath information needs to be collected in advance as experience values ​​or environmental information needs to be collected, the collection workload is heavy, the measurement difficulty is relatively large, the accuracy of multipath errors is relatively low, and It is troublesome to operate manually in the measurement

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