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US 5,955,983 AGranted
Optical fiber based radars
OwnerMing-Chiang Liinventor
Life of this patent
Estimating the term…
Abstract
A radar system comprises an optical fiber RF storage subsystem for storing a portion of RF signals before the transmission. The radar system further comprises a coherent RF receiver to process reflected RF signals using stored RF signals as a reference. Furthermore, the optical fiber RF storage system is used to store initially received RF signals for comparison with sequentially received RF signals.
Claims20
A radar system comprises:
- a transmitter;
- an antenna subsystem;
- an optical fiber RF storage subsystem;
- a coherent RF receiver;
- wherein the transmitter comprises means for generating RF signals;
- wherein the antenna subsystem comprises means for transmission of generated RF signals and for receiving reflection of RF signals;
- wherein the optical fiber RF storage subsystem comprises means for storing a portion of generated RF signals from the transmitter;
- wherein the coherent RF receiver comprises means for processing the reflected RF signals from the antenna subsystem by using the stored RF signals from the optical fiber RF storage subsystem as a reference.
5 more elements
A method for operating radar system which comprises steps of:
- (a) generating RF signals from a transmitter;
- (b) storing a portion of generated RF signals in an optical fiber RF storage subsystem;
- (c) transmitting generated RF signals from an antenna subsystem;
- (d) receiving a portion of reflected RF signals from an antenna subsystem;
- (e) sending the reflected and stored RF signals to a coherent RF receiver;
- and
- (f) processing the reflected RF signals by using the stored RF signals as a reference.
4 more elements
A passive RF system comprises:
- an antenna subsystem;
- an optical fiber RF storage subsystem;
- a coherent RF receiver;
- wherein the antenna subsystem comprises means for receiving RF signals;
- wherein the antenna subsystem receives a portion of RF signals;
- wherein the optical fiber RF storage subsystem comprises means for storing the portion of received RF signals;
- wherein the antenna subsystem receives sequential RF signals;
- wherein the coherent RF receiver comprises means for processing the sequential RF signals from the antenna subsystem by using the portion of stored RF signals from the optical fiber RF storage subsystem as a reference.
5 more elements
Dependencies are inferred from the claim text.