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1. (WO2018160141) APPARATUS AND METHOD FOR LOCALISATION AND/OR TRACKING

Pub. No.:    WO/2018/160141    International Application No.:    PCT/SG2018/050101
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Tue Mar 06 00:59:59 CET 2018
IPC: G01S 5/02
G01S 3/02
Applicants: NANYANG TECHNOLOGICAL UNIVERSITY
Inventors: XIE, Yaxiong
LI, Mo
Title: APPARATUS AND METHOD FOR LOCALISATION AND/OR TRACKING
Abstract:
An apparatus and method for localisation and/or tracking is disclosed. The apparatus comprises: a receiver for receiving a received signal, the received signal comprising a superposition of multiple signals derived from a wireless signal transmitted from a transmitter along a plurality of different paths; a computer processor; and a data storage device. The data storage device comprises instructions operative by the computer processor to separate the received signal into the multiple signals by: a)estimating initial path parameters by: estimating a number (L) of signal paths in the received signal; estimating parameters for each signal path using an estimator tool; and deriving an initial background noise; and b) refining the parameters by: i) combining the initial background noise with a reconstructed signal path using current estimated parameters and re-estimating one or more parameters of each signal path using the estimator tool; ii) re-estimating background noise by re-constructing each signal path using the re-estimated parameters from (i) and subtracting the L re- constructed signal paths from the received signal; and iii) repeating step (i) and (ii) using the re-estimated background noise as the initial background noise until the parameters for each signal path satisfy a convergence criteria; and using the parameters for each signal path to determine a location and/or motion of a target.