Direction finding system using MEMS sound sensors
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Authors
Karunasiri, Gamani
Alves, Fabio
Subjects
Advisors
Date of Issue
2017-12-12
Date
Publisher
The Government of the United States of America, as represented by the Secretary of the Navy, Washington, DC (US)
Language
en_US
Abstract
Provided is a Direction Finding Acoustic Sensor comprising a first sound sensor and a second sound sensor, where the first and second sensors are generally maintained in a reflectional symmetry around an axis of symmetry. A digital device in data communication both sound sensors receives a signal from P(L) from the first sensor a signal P(R) from the second sensor based on displacement respective sensors. The digital device evaluates a difference between an α(1)P(L) and the α(2)P(R) relative to a sum of the α(1)P(L) and the α(2)P(R), and provides an angle Θ(s), corresponding to the result. Typically, the Direction Finding Acoustic Sensor communicates the Θ(s) determined using some appropriate reference frame, such as the axis of symmetry. The Direction Finding Acoustic Sensor is capable of providing an unambiguous direction within an angle of ±(90˚- Θ(off)) of the axis of symmetry.
Type
Patent
Description
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
US 9,843,858 B1
NPS Report Number
Sponsors
Funder
Format
21 p.
Citation
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.