Low duty cycle navigation system
Assignee
US Government
Filed as: UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Filed
Apr 30, 1964
Granted
Mar 21, 2000
Location
Arlington VA (defense contractors)
Abstract
This invention relates to radio navigation systems and is particularly dited to means for transmitting range and azimuthal information to selected receivers only. More specifically this invention relates to a R-O navigating system in which the signal is so concealed in noise that the signal is of use only to friendly, as distinguished from enemy receivers. By this system enemy aircraft, in a military sense, cannot `home` on either the shipboard or land-based beacons. Mobile equipment of the system of this invention is passive and is, hence, not subject to detection.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 12, 1982
Rescinded
Sep 24, 1999
Duration
17 years, 6 months
Record Details
- Patent number
- US 6040801
- Application
- 04364892
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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