Wifi mapping and motion detection
AssigneeNorthrop Grumman Systems Corporation
InventorsSteven A. Schwartz, Bruce F. Queen
Life of this patent
Estimating the term…
Abstract
An apparatus includes a plurality of transceivers positioned to transmit and/or receive signals that pass through at least a portion of a structure of interest, wherein each of the transceivers receives a signal from at least one of the other transceivers, and a processor using the strength of the received signals, the locations of the transceivers, prior knowledge of building practices, and exterior characteristics of the structure to produce a map of the structure of interest and/or to detect movement of persons in the structure of interest. A method of producing a map of the structure of interest and/or detecting the movement of persons in the structure of interest is also provided.
Claims19
An apparatus comprising:
- a plurality of transceivers positioned outside of a structure of interest to transmit and/or receive signals that pass through at least a portion of the structure of interest, wherein each of the transceivers receives a signal from at least one of the other transceivers;
- and
- a processor using strength of the received signals, locations of the transceivers, prior knowledge of building practices, and exterior characteristics of the structure to produce a map of the structure of interest and/or to detect movement of persons in the structure of interest, wherein the transceivers are positioned in vertically displaced planes and the processor produces maps along the planes to produce a three-dimensional map of the structure of interest.
A method comprising:
- placing a plurality of transceivers outside of a structure of interest to transmit and/or receive signals that pass through at least a portion of the structure of interest, wherein each of the transceivers receives a signal from at least one of the other transceivers;
- and
- using the strength of the received signals and the locations of the transceivers to produce a map of the structure of interest, wherein the transceivers are positioned in vertically displaced planes and the map is a three-dimensional map of the structure of interest.
A method comprising:
- placing a plurality of transceivers outside of a structure of interest to transmit and/or receive signals that pass through at least a portion of the structure of interest, wherein each of the transceivers receives a signal from at least one of the other transceivers;
- and
- using the strength of the received signals and the locations of the transceivers to detect movement of persons in the structure of interest, wherein the step of using the strength of the received signals and the locations of the transceivers to detect and track movement of persons in the structure of interest uses the temporal order of transmitter/receiver signal paths that have momentary fluctuations.
Dependencies are inferred from the claim text.