SPECTRUM ANALYSIS RADAR
First Claim
Patent Images
1. A system for determining range and velocity of a target comprising:
- a. a noise source;
b. a coupler fed by the noise source c. an antenna fed by the coupler for transmitting signals to the target and receiving the reflected signals therefrom;
d. an adder fed by the reflected signals from the antenna and from the coupler;
e. a comb filter including a plurality of bandpass filters fed by the adder;
f. a plurality of balanced mixers each fed by alternate pairs of bandpass filters;
g. a sequence of phase shifters fed by the balanced mixers and shifting the phase by a factor of progressive sequential increments;
h. a matrix having a plurality of inputs fed by the phase shifters including a plurality of sequences of phase shifters with progressive linear phase shifts and a plurality of sequences of 90* hybrid junctions interconnecting in pairs the sequence of phase shifters; and
i. a plurality of detectors fed by the outputs of the matrix.
0 Assignments
0 Petitions
Accused Products
Abstract
Noise source signals are added to their reflected signals and bandpass filtered in a comb filter having a sequence of frequency outputs which are pair-wise mixed and fed into a sequence of phase shifters with each phase shifter having a sequential linearly progressive phase shift. The outputs of the phase shifters are fed to a matrix including alternate sequences of phase shifters with linearly progressive phase shifts and the phase shifters are interconnected in pairs with 90* hybrid junctions. Detectors are fed by the outputs of the matrix producing range gate outputs.
-
Citations
2 Claims
-
1. A system for determining range and velocity of a target comprising:
- a. a noise source;
b. a coupler fed by the noise source c. an antenna fed by the coupler for transmitting signals to the target and receiving the reflected signals therefrom;
d. an adder fed by the reflected signals from the antenna and from the coupler;
e. a comb filter including a plurality of bandpass filters fed by the adder;
f. a plurality of balanced mixers each fed by alternate pairs of bandpass filters;
g. a sequence of phase shifters fed by the balanced mixers and shifting the phase by a factor of progressive sequential increments;
h. a matrix having a plurality of inputs fed by the phase shifters including a plurality of sequences of phase shifters with progressive linear phase shifts and a plurality of sequences of 90* hybrid junctions interconnecting in pairs the sequence of phase shifters; and
i. a plurality of detectors fed by the outputs of the matrix.
- a. a noise source;
-
2. A system for determining range and velocity of a target according to claim 1 wherein the plurality of detectors are square law detectors.
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 AssigneeHolt F. Sheppard, John K. Schindler
-
Original AssigneeHolt F. Sheppard, John K. Schindler
-
InventorsSchindler, John K., Holt, F. Sheppard
-
Primary Examiner(s)Borchelt, Benjamin A.
-
Assistant Examiner(s)Montone, G. E.
-
Application NumberUS05/242,996Time in Patent Office455 DaysField of Search343/5SA,9,18EUS Class Current342/111CPC Class CodesG01S 13/32 using transmission of conti...G01S 13/584 adapted for simultaneous ra...
