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1. (WO2018146564) ACQUIRING INFORMATION REGARDING A VOLUME USING WIRELESS NETWORKS

Pub. No.:    WO/2018/146564    International Application No.:    PCT/IB2018/050280
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Thu Jan 18 00:59:59 CET 2018
IPC: G01S 11/02
G01S 7/41
G01S 13/04
G08G 1/14
Applicants: ZWIRN, Gil
Inventors: ZWIRN, Gil
Title: ACQUIRING INFORMATION REGARDING A VOLUME USING WIRELESS NETWORKS
Abstract:
There is provided a method for acquiring information regarding terrain and/or objects within a volume, said method comprising: transmitting signals over time ("node signals") from one or more nodes of a wireless network ("subject network"); receiving the node signals after their traversing a medium ("node resultant signals") using one or more receiving units ("node signal receivers"); measuring one or more physical attributes ("signal attributes") for one or more of the node resultant signals, wherein at least one of the signal attributes is of at least one of the following types: (a) time difference between node signal transmission by the applicable transmitting subject network node and node resultant signal reception by the applicable node signal receiver; (b) phase difference between the transmitted node signal and the received node resultant signal; (c) power ratio between the transmitted node signal and the received node resultant signal; (d) frequency difference between the received node resultant signal and the transmitted node signal (Doppler shift); and/or (e) direction from which the node resultant signal has arrived, and/or its projection on one or more predefined axes; estimating the spatial location as a function of time for one or more of the transmitting subject network nodes and/or one or more of the node signal receivers; and analyzing one or more of the node resultant signals and/or one or more of the signal attributes to extract information regarding objects along the signal's paths ("mapping information").