发明名称 |
Pseudo-random noise generator calibration for acoustic hydrophones |
摘要 |
A pseudo-random noise generator (PRNG) or a hard clipped tonal is remotely employed as an acoustic signal simulator for calibrating individual hydrophone channels of an acoustic array. The PRNG is employed to present a complete measurement of the channel gain and phase vs. frequency characteristics. The circuitry provides for synchronizing a channel hydrophone PRNG's to obtain gain and phase comparison of a single channel measurement. The hard clipped tonal provides the gain vs. frequency of the channel transfer function. In addition a binary signal is provided for changing the gain of the channel.
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申请公布号 |
US4563756(A) |
申请公布日期 |
1986.01.07 |
申请号 |
US19830481532 |
申请日期 |
1983.04.01 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
ASSARD, GERALD L. |
分类号 |
G01H3/00;(IPC1-7):H04R29/00 |
主分类号 |
G01H3/00 |
代理机构 |
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主权项 |
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地址 |
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