PHASE ACCUMULATOR-BEARING TRACKER
Assignee
US Government
Filed as: UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Filed
Jun 4, 1984
Granted
Sep 4, 1990
Location
FITCHVILLE CT US
Abstract
A passive sonar bearing tracker having spaced arrays wherein the target bing is a function of the electrical phase angle of the signal between the arrays. Confidence in the bearing estimate is increased in spite of the relatively narrow bandwidth of the signal and a low signal-to-noise ratio by sequentially bandpass frequency filtering each very narrow component of the narrowband signal, computing the phase difference between respective filter pairs, accumulating the phase differences over a selected time period and displaying the phase difference calibrated as a bearing. In a second embodiment the individual differences are weighed according to the magnitude of the frequency signal at the associated very narrow band.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jun 13, 1986
Rescinded
May 4, 1990
Duration
3 years, 10 months
Inventor
- 1WARREN A. GOLDMAN
Record Details
- Patent number
- US 4955003
- Application
- 06617282
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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