A high frequency phase conjugation array

MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295) Pub Date : 2001-11-05 DOI:10.1109/OCEANS.2001.968067

W. Hodgkiss, J. Skinner, G. E. Edmonds, R. Harriss, D. Ensberg

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引用次数: 15

Abstract

A phase conjugation array (time-reversal mirror) time reverses the incident signal and precisely returns it to its original source location. A high frequency (/spl sim/3.5 kHz) phase conjugation array (HFPCA) has been designed, fabricated, and deployed at sea in two experiments (July 1999 and May/June 2000) conducted jointly with the NATO SACLANT Undersea Research Centre. The HFPCA consists of 29 source/receive transducers equally-spaced over an aperture of 78 m and operating nominally in the 3-4 kHz band, an underwater pressure case containing the source/receive electronics, and a surface buoy providing battery power, system control, and wireless local area network (LAN) connectivity. On receive, the sampling rate for each channel is f/sub s/=12 kHz. On transmit, an arbitrary waveform can be transmitted independently from each transducer (10.7 sec maximum duration) at a maximum source level of 180 dB re 1 /spl mu/Pa per transducer. The wireless LAN enables received data segments to be telemetered to the support ship up to 30 km away for immediate processing. Transmit waveforms (e.g. time reversed versions of the received data segments) also can be telemetered to the surface buoy for downloading into the electronics and transmission.

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一种高频相位共轭阵列

相位共轭阵列(时间反转镜)对入射信号进行时间反转，并精确地将其返回到原始源位置。一个高频(/spl sim/3.5 kHz)相位共轭阵列(HFPCA)已经设计、制造，并在海上部署在两次实验中(1999年7月和2000年5月/ 6月)与北约SACLANT海底研究中心联合进行。HFPCA由29个源/接收换能器组成，这些换能器的间距为78 m，工作频率为3-4 kHz，水下压力盒包含源/接收电子设备，水面浮标提供电池供电、系统控制和无线局域网(LAN)连接。接收时，每个通道的采样率为f/sub s/=12 kHz。在传输时，任意波形可以独立于每个换能器(最长持续时间10.7秒)，每个换能器的最大源电平为180 dB re / 1 /spl mu/Pa。无线局域网能够将接收到的数据段遥测到30公里外的支援舰，以便立即进行处理。发射波形(例如，接收数据段的时间反转版本)也可以遥测到海面浮标，以便下载到电子设备和传输。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295)

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