Accession Number:

ADA067152

Title:

Linear Filtering for Shipboard MAD Recorders.

Personal Author(s):

Corporate Author:

NAVY MARINE ENGINEERING LAB ANNAPOLIS MD

Report Date:

1966-08-01

Abstract:

This report describes the derivation of linear filters for MAD equipment to be used for submarine detection from high-speed surface vessels. Since the bandwidth required to pass all the anomaly signals of interest is considerably larger than in airborne systems, it is recommended that the passband be covered by two filters, one driving each pen of a two-channel recorder. It is also recommended that each of these filters be provided with switchable cutoff frequencies for improved noise discrimination whenever the targets closing rate can be estimated. Furthermore, a selection of variable-frequency notch filters should be available to cascade with the basic filters in order to remove quasi-periodic noise, both that of geomagnetic origin as well as periodic maneuver noise. Author

Descriptive Note:

Research and development rept.,

Pages:

0043

Descriptors:

Identifiers:

Subject Categories:

Communities Of Interest:

File Size:

16.41MB

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