DETECTION METHOD AND APPARATUS
Assignee
UNITED STATES AIR FORCE
Filed
Oct 28, 1987
Granted
Nov 21, 1995
Location
MANOMET MA US
Abstract
The detection of a microphone within a selected site includes broadcasting an acoustic signal having two components with different frequencies selected to produce the re-broadcast, by a microphone in the broadcast field, of a selected resonant responsive signal, and sensing the re-broadcast of such a responsive signal. Determining the direction in which such a responsive signal is sensed determines the location of a microphone detected to be present within the selected site.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Nov 3, 1989
Rescinded
Feb 24, 1995
Duration
5 years, 3 months
Inventor
- 1WESLEY TANNENBAUM
Record Details
- Patent number
- US 5469405
- Application
- 07118774
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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