PROBLEM TO BE SOLVED: To provide a radio positioning terminal capable of estimating a current position with high accuracy and reliability in a short time.SOLUTION: A radio positioning terminal 40 comprises: a reception information determination unit (S256) that sequentially determining multiple pieces of reception information which evaluates a signal received from a base station 20 through multiple types of communication paths by a radio communication device 41, in which a value varies by the position of the radio positioning terminal, and which is different in a variation tendency from information on a signal received through one communication path by the radio communication device 41; a memory 45 that stores a reference locus setting correspondence relation between the multiple pieces of reception information and the position of the radio positioning terminal 40; a position change amount calculation unit (S254) that sequentially calculates the amount of positional change of the radio positioning terminal 40; a locus generation unit (S257) that generates a plurality of probe loci setting correspondence relation between the multiple pieces of reception information and the amount of positional change; and a position estimation unit (S260 and S261) that estimates the current position on the basis of a matching position of the reference locus and the plurality of probe loci.SELECTED DRAWING: Figure 12
【課題】高精度、高信頼、かつ、短時間で現在位置を推定することができる無線測位端末を提供する。【解決手段】複数種類の通信経路により無線通信機41が基地局20から受信した信号を評価した情報であって、無線測位端末40の位置により値が変化し、かつ、1つの通信経路により無線通信機41が受信した信号に関する情報とは、変化傾向が異なる情報である複数受信情報を逐次決定する受信情報決定部(S256)と、複数受信情報と無線測位端末40の位置との間の対応関係が設定された基準軌跡を記憶するメモリ45と、無線測位端末40の位置変化量を逐次算出する位置変化量算出部(S254)と、複数受信情報と位置変化量との間の対応関係が設定された複数プローブ軌跡を生成する軌跡生成部(S257)と、基準軌跡と複数プローブ軌跡とのマッチング位置に基づいて現在位置として推定する位置推定部(S260、S261)とを備える。【選択図】図12
RADIO POSITIONING TERMINAL
無線測位端末
2016-12-22
Patent
Electronic Resource
Japanese
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