METHOD AND MEANS FOR SHORT PULSE INTERFERENCE REJECTION
Assignee
Filed
Aug 30, 1977
Granted
Mar 26, 1996
Location
MD US
Abstract
A radar interference circuit which rejects both continuous noise and shorulse interference signals. A plurality of omni-directional antennas are placed around the main directional radar antenna and connected in differing sets to a plurality of canceller means to each of which the main antenna signal is also connected. The canceller means for each set of three Omnis and the main antenna cancels out the white-noise interference received by that group of antennas. The outputs of the plurality of canceller means are then taken in different sets of two each, subtracted and compared to a threshold signal. If one or more comparator outputs are above the threshold, signifying that the antenna pulse signal is being received through the sidelobes of the antenna patterns, the outputs of these comparators will be a one signal and the OR gate, to which the comparator outputs are fed, will provide an output to blank the radar. Thus, short-pulse signals arriving through the sidelobes of the antenna patterns are rejected as interference signals.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 3, 1982
Rescinded
Nov 17, 1994
Duration
12 years, 8 months
Inventor
- 1BEN H. CANTRELL
Record Details
- Patent number
- US 5502448
- Application
- 05829695
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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