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US 6,650,272 B2Granted
Radar system and method
AssigneeRaytheon Company
InventorsKapriel V. Krikorian, Robert A. Rosen
Life of this patent
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AssigneeRaytheon Company
InventorsKapriel V. Krikorian, Robert A. Rosen
Estimating the term…
A method for exciting an antenna with a waveform having a burst width and pulse width scaled proportionately with a selected range scale and a temporal filter to address any ambiguities in range resulting from the transmission of a signal in accordance with the novel waveform. The inventive filtering method includes the step of scanning a beam including a plurality of pulses of electromagnetic energy. The step of scanning the beam includes the step of outputting a beam excited by a waveform having a burst width and pulse width scaled proportionately with a selected range scale. Reflections of these pulses are received as return signals. The returns are processed to extract range in range rate measurements. The range and range rate measurements are compressed to form a plurality of range bins. The pulses are selectively weighted to reduce sidelobes resulting from a subsequent Fast Fourier transform (FFT) operation. The FFT operation is then performed for a predetermined number of pulses in at least one of the range bins at at least one frequency. A second FFT operation is then performed for pixels of azimuth data across the range bins. Finally, ambiguity nulling weights are provided and applied to each pixel of data in each range bin.
A data-processing system adapted for use with a system for scanning a beam including a plurality of pulses of electromagnetic energy, receiving reflections of the pulses in the beam as return signals, processing the return signals to extract range and range rate measurements, processing the range and range rate measurements to form a plurality of range bins, and selecting and weighting return pulses in the range bins, the data-processing system comprising:
A system comprising:
A method including the steps of:
Dependencies are inferred from the claim text.