RADAR TARGET IDENTIFICATION SYSTEM
First Claim
Patent Images
1. A radar target identification system including means for illuminating a target with radar energy, receiving echos having subaudible frequency components from said target, and providing an output indicative of the variation of the amplitude of said echos;
- and recognition meAns for identifying said subaudible frequency components connected to and responsive to said output wherein said recognition means includes a band-pass filter connected to said output;
frequency sensitive means; and
frequency multiplier means connected between said filter and said frequency sensitive means.
0 Assignments
0 Petitions
Accused Products
Abstract
This system utilizes the low frequency modulations of the signal from a radar which result from target scintillation and target motion. Outputs are provided for three types of identification aural, frequency meter, and automatic recognition computer. A frequency multiplier may be used with the aural and frequency meter outputs.
29 Citations
1 Claim
-
1. A radar target identification system including means for illuminating a target with radar energy, receiving echos having subaudible frequency components from said target, and providing an output indicative of the variation of the amplitude of said echos;
- and recognition meAns for identifying said subaudible frequency components connected to and responsive to said output wherein said recognition means includes a band-pass filter connected to said output;
frequency sensitive means; and
frequency multiplier means connected between said filter and said frequency sensitive means.
- and recognition meAns for identifying said subaudible frequency components connected to and responsive to said output wherein said recognition means includes a band-pass filter connected to said output;
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeStephen L. Johnston
-
Original AssigneeStephen L. Johnston
-
InventorsJohnston, Stephen L.
-
Primary Examiner(s)Tubbesing, T. H.
-
Application NumberUS04/749,538Time in Patent Office1,749 DaysField of Search343/5R,6.5R,7.7,5SAUS Class Current342/192CPC Class CodesG01S 7/411 Identification of targets b...
