Application of adaptive pulse compression (APC) in cluttered radar cross-section (RCS) measurements
AssigneeThe Board of Regents of the University of Oklahoma
InventorsJay W. McDaniel, Justin G. Metcalf, Rachel E. Jarvis
Life of this patent
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Abstract
A method comprising: obtaining I/Q data associated with a received radar signal; performing background subtraction on the I/Q data to obtain a subtracted signal; applying an algorithm to the subtracted signal to obtain a filtered signal, wherein the algorithm is based on a MSE filter; performing time-gating on the filtered signal to obtain a time-gated signal; applying a FFT to convert the time-gated signal to a frequency-domain signal; and applying a calibration set to the frequency-domain signal to extract an RCS of an OUT; and a system for conducting the method.
Claims20
A method comprising:
- obtaining in-phase/quadrature (I/Q) data associated with a received radar signal;
- performing a background subtraction on the I/Q data to obtain a subtracted signal;
- applying an algorithm to the subtracted signal to obtain a filtered signal, wherein the algorithm is based on a mean square error (MSE) filter;
- performing a time-gating process on the filtered signal to obtain a time-gated signal;
- applying a fast Fourier transform (FFT) to convert the time-gated signal to a frequency-domain signal;
- applying a calibration set to the frequency-domain signal to extract a radar cross-section (RCS) of an object under test (OUT);
- delivering the RCS to a user;
- and
- manufacturing or modifying an object based on the RCS.
A method comprising:
- transmitting a transmitted signal;
- obtaining in-phase/quadrature (I/Q) data associated with a received radar signal;
- performing a background subtraction on the I/Q data to obtain a subtracted signal;
- applying an algorithm to the subtracted signal to obtain a filtered signal, wherein the algorithm is based on a mean square error (MSE) filter;
- performing a time-gating process on the filtered signal to obtain a time-gated signal;
- applying a fast Fourier transform (FFT) to convert the time-gated signal to a frequency-domain signal;
- applying a calibration set to the frequency-domain signal to extract a radar cross-section (RCS) of an object under test (OUT);
- and
- delivering the RCS to a user.
A system comprising:
- a memory configured to store instructions;
- one or more processors coupled to the memory and configured to execute the instructions to cause the system to:
- obtain in-phase/quadrature (I/Q) data associated with a received radar signal;
- perform a background subtraction on the I/Q data to obtain a subtracted signal;
- apply an algorithm to the subtracted signal to obtain a filtered signal, wherein the algorithm is based on a mean square error (MSE) filter;
- perform a time-gating process on the filtered signal to obtain a time-gated signal;
- apply a fast Fourier transform (FFT) to convert the time-gated signal to a frequency-domain signal;
- and
- apply a calibration set to the frequency-domain signal to extract a radar cross-section (RCS) of an object under test (OUT), wherein the RCS is delivered to a user;
- and
- a transceiver configured to:
- transmit a transmitted signal;
- and
- receive the received radar signal in response to the transmitted signal.
A computer program product comprising instructions that are stored on a non-transitory computer-readable medium and that, when executed by one or more processors, cause a system to:
- transmit a transmitted signal;
- obtain in-phase/quadrature (I/Q) data associated with a received radar signal;
- perform a background subtraction on the I/Q data to obtain a subtracted signal;
- apply an algorithm to the subtracted signal to obtain a filtered signal, wherein the algorithm is based on a mean square error (MSE) filter;
- perform a time-gating process on the filtered signal to obtain a time-gated signal;
- apply a fast Fourier transform (FFT) to convert the time-gated signal to a frequency-domain signal;
- and
- apply a calibration set to the frequency-domain signal to extract a radar cross-section (RCS) of an object under test (OUT), wherein the RCS is delivered to a user.
Dependencies are inferred from the claim text.