Invention Grant
- Patent Title: Technique for focusing waves on moving objects
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Application No.: US15911764Application Date: 2018-03-05
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Publication No.: US10560192B2Publication Date: 2020-02-11
- Inventor: Jerry T. Kim , Margaret Cheney
- Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
- Applicant Address: US DC Washington
- Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
- Current Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
- Current Assignee Address: US DC Washington
- Agency: US Naval Research Laboratory
- Agent Richard F. Bis
- Main IPC: H04B10/548
- IPC: H04B10/548 ; H04B1/74 ; H04B1/04 ; H04B10/2575 ; H04B10/40

Abstract:
In certain embodiments, a system for transmitting (electromagnetic or acoustic) wave-based signals towards a target includes a plurality of transceivers and a controller. Each transceiver transmits a probe signal towards the target and receives an associated backscatter signal corresponding to reflection of the probe signals from the target. The controller determines, for each transceiver, a Doppler frequency shift and a time delay, modifies each associated backscatter signal based on the corresponding Doppler frequency shift and time delay to generate an associated motion-compensated backscatter signal, and applies time reversal (TR) processing to each motion-compensated backscatter signal to generate an associated motion-compensated TR signal. Each transceiver transmits towards the target a transmission signal based the associated motion-compensated TR signal. In communications systems, the transmission signals are data-modulated versions of the motion-compensated TR signals. In radar and sonar systems, the transmission signals are the motion-compensated TR signals.
Public/Granted literature
- US20180269982A1 TECHNIQUE FOR FOCUSING WAVES ON MOVING OBJECTS Public/Granted day:2018-09-20
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