Focusing in Complex Media Time-reversal , inverse filter and wavefront shapingBretagne, AliceTourin, ArnaudTanter, MichaëlFink, Mathias
Time reversal mirror (TRM) technology is the adaptive focusing method evolved from the phase conjugate method in optics. Conventional incentive method in TRM technology is a narrow pulse signal with a high bandwidth. In this paper, the autocorrelation property of the TRM was proved from the time...
Timereversalprincipleanditsapplicationtopassivecommunicationwereintroduced. 分析了时反法的理论基础,并对其用于浅海被动通信进行了仿真研究。 www.ceps.com.tw 4. Therelationbetweenspatiotemporalinversefilterandtimereversalisanalyzed,andtheiterativetimereversal ispresented. ...
The time-reversal mirror (TRM) prescribes the reverse playback of a signal to focalize an acoustic excitation as a Loschmidt echo. In the quantum domain, the perfect inverse filter (PIF) processes this signal to ensure an exact reversion provided that the excitation originated outside the cavit...
Subsequently, we study the propagation of a hybrid two-peak asymmetric pulse and demonstrate the time-reversal nature of the time-reflected signal, along with its frequency translation arising from the conservation of momentum. Finally, we study the time-reflection of a chirped pulse with a phase...
Active noise control using remotely placed sources: Application to magnetic resonance imaging noise and equivalence to the time reversal inverse filter Applied Acoustics, Volume 176, 2021, Article 107902 Trent S. Furlong,…, Scott D. Sommerfeldt Show 3 more articles Article Metrics Citations Citation...
2. Time Reversal Time reversal (TR) is a transmission scheme in which a time reversed channel impulse response (CIR) is used as a transmitter prefilter. In a first step, the CIR is estimated between a transmitter and a receiver. Then the CIR is flipped in time and emitted by the ...
The North China craton (NCC) was dominated by tectonic extension from late Cretaceous to Cenozoic, yet seismic studies on the relationship between crust extension and lithospheric mantle deformation are scarce. Here we present a three dimensional radiall
<div p-id="p-0001">In an asymmetric time-reversal wireless system, a base station includes an input circuit configured to, during a hand-shake period, receive a channel response signal derived from a
where P2 is an (Nsub+Q)×(Nsub+Q) time reversal matrix. Two properties of time-reversal matrices will com handy at this point [26]: P2Tzp=TzpP1; P1) P2=FNsub+QHFNsub+QH=FNsub+QFNsub+Q. P2) Using P1) and P2), we can verify by direct substitution that P2( ...