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US 11,237,246 B1Granted
Pulsed radar with multispectral modulation to reduce interference, increase PRF, and improve doppler velocity measurement
AssigneeDbtsystems LLC
InventorDavid Tansek
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Abstract
A pulse radar system and method has long range unambiguous image reflections at high pulse repetition frequency (PRF), long range high resolution radial velocity not limited by Doppler Nyquist limiting, improved signal sensitivity, and strong in-band interference rejection, thereby improving existing radar by increasing the transmission pulse rate by uniquely tagging each outgoing pulse so they can be easily separated when received.
Claims20
A pulse radar system comprising:
- a pulse generator located at a first location and configured to create at least one pulse having a modulation signal and a carrier signal, said modulation signal being configured to be changed with each successive one of said at least one pulse such that said at least one pulse is separated from each other at a remote second location;
- a modulator in communication with said pulse generator and configured to emit said modulation signal;
- wherein said modulator is further configured to react to commands from said pulse generator to change said modulation signal;
- wherein, based on said commands received from said pulse generator, said modulator is further configured to dynamically change a modulation type of said modulation signal selected from a group of modulation types including an amplitude modulation, a frequency modulation, a digital pattern modulation, and a random pattern generation modulation;
- and
- a signal processor in communication with said at least one intermediate-frequency amplifier, and configured to process each said modulation signal from said at least one intermediate-frequency amplifier;
- wherein said each successive one of said at least one pulse repeats after a time interval;
- wherein said each successive one of said at least one pulse is configured to have a transmission pulse rate and further configured to be uniquely tagged;
- wherein said each successive one of said at least one pulse is distinguished such that said pulse radar system is configured to act efficiently as a pulse repetition frequency pulse radar system, a long-range pulse radar system, a long range velocity detection pulse radar system, and a high angular resolution pulse radar system.
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Dependencies are inferred from the claim text.