Pseudo-Random Noise Generator Calibration for Acoustic Hydrophones.
DEPARTMENT OF THE NAVY WASHINGTON DC
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A pseudo-random noise generator PRNG of 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 PRNGs to obtain gain and phase comparison of a signal 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. Patents
- Electrical and Electronic Equipment
- Test Facilities, Equipment and Methods