Remote Whispering Applying Time Reversal

doi:10.2172/1196175

GSTDTAP > 地球科学

DOI	10.2172/1196175
报告编号	LA-UR--15-25393
来源ID	OSTI ID: 1196175
	Remote Whispering Applying Time Reversal
	Anderson, Brian Eric
	2015-07-16
出版年	2015
页数	9
语种	英语
国家	美国
领域	地球科学
英文摘要	The purpose of this project was to explore the use of time reversal technologies as a means for communication to a targeted individual or location. The idea is to have the privacy of whispering in oneâs ear, but to do this remotely from loudspeakers not located near the target. Applications of this work include communicating with hostages and survivors in rescue operations, communicating imaging and operational conditions in deep drilling operations, monitoring storage of spent nuclear fuel in storage casks without wires, or clandestine activities requiring signaling between specific points. This technology provides a solution in any application where wires and radio communications are not possible or not desired. It also may be configured to self calibrate on a regular basis to adjust for changing conditions. These communications allow two people to converse with one another in real time, converse in an inaudible frequency range or medium (i.e. using ultrasonic frequencies and/or sending vibrations through a structure), or send information for a system to interpret (even allowing remote control of a system using sound). The time reversal process allows one to focus energy to a specific location in space and to send a clean transmission of a selected signal only to that location. In order for the time reversal process to work, a calibration signal must be obtained. This signal may be obtained experimentally using an impulsive sound, a known chirp signal, or other known signals. It may also be determined from a numerical model of a known environment in which the focusing is desired or from passive listening over time to ambient noise.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/7023
专题	地球科学
推荐引用方式 GB/T 7714	Anderson, Brian Eric. Remote Whispering Applying Time Reversal,2015.