Radar detector utilizing complex data for processing of signal information

A radar detector, comprising:

• a receiver section for receiving one or more radar signals, the receiver section providing a received RF signal in an intermediate frequency band, the received RF signal comprising at least one of the one or more radar signals;
• a data converter for receiving the received RF signal, the data converter creating a digitized complex signal from the received RF signal, the digitized complex signal comprising a plurality of digital signal samples, each of the plurality of digital signal samples comprised of at least an in-phase component and an out-of-phase component that is 90° out-of-phase with the in-phase component, the data converter creating the digitized complex signal by:
• sampling the received RF signal to create a digital signal;
• generating a first local oscillator signal and a second local oscillator signal that is 90° out of phase with the first local oscillator signal;
• mixing the first local oscillator signal with the digital signal to produce the in-phase component;
• and
• mixing the second local oscillator signal with the digital signal to produce the out-of-phase component;
• and
• a control system for receiving the digitized complex signal, the control system comprising a neural network trained to distinguish radar signal sources based upon characteristics of the digitized complex signal.

A radar detector, comprising:

• a receiver section for receiving one or more radar signals, the receiver section providing a received RF signal in an intermediate frequency band, the received RF signal comprising at least one of the one or more radar signals;
• a data converter for receiving the received RF signal, the data converter creating a digitized complex signal from the received RF signal, the digitized complex signal comprising a plurality of digital signal samples, each of the plurality of digital signal samples comprised of at least an in-phase component and an out-of-phase component that is 90° out-of-phase with the in-phase component, the data converter creating the digitized complex signal by:
• sampling the received RF signal to create a first digital signal;
• applying a Hilbert transform to the first digital signal to generate a second digital signal;
• summing the first digital signal with the second digital signal to generate a third digital signal;
• generating a first local oscillator signal and a second local oscillator signal that is 90° out of phase with the first local oscillator signal;
• mixing the first local oscillator signal with the third digital signal to produce the in-phase component;
• and
• mixing the second local oscillator signal with the third digital signal to produce the out-of-phase component;
• and
• a control system for receiving the digitized complex signal, the control system comprising a neural network trained to distinguish radar signal sources based upon characteristics of the digitized complex signal.

A method of detecting a radar signal, comprising:

• receiving one or more radar band RF signals;
• processing the radar band RF signals to produce a received RF signal in an intermediate frequency band comprising at least one of the one or more radar signals;
• creating a digitized complex signal from the received RF signal, the digitized complex signal comprising a plurality of digital signal samples, and wherein each of the plurality of digital signal samples is comprised of at least an in-phase component and an out-of-phase component that is 90° out-of-phase with the in-phase component, by:
• generating a first local oscillator signal and a second local oscillator signal that is 90° out of phase with the first signal, wherein the first local oscillator signal and the second local oscillator signal are within the intermediate frequency band;
• mixing the first local oscillator signal with the received RF signal to produce an in-phase signal;
• mixing the second local oscillator signal with the received RF signal to produce an out-of-phase signal;
• sampling the in-phase signal to create the in-phase component;
• and
• sampling the out-of-phase signal to create the out-of-phase component;
• producing a frequency domain transformed representation of the digitized complex signal;
• producing a plurality of spectral content snapshots based on the frequency domain transformed representation of the digitized complex signal;
• and
• analyzing the plurality of spectral content snapshots in a neural network to determine a classification of at least one of the one or more radar signals.

A method of detecting a radar signal, comprising:

• receiving one or more radar band RF signals;
• processing the radar band RF signals to produce a received RF signal in an intermediate frequency band comprising at least one of the one or more radar signals;
• creating a digitized complex signal from the received RF signal, the digitized complex signal comprising a plurality of digital signal samples, and wherein each of the plurality of digital signal samples is comprised of at least an in-phase component and an out-of-phase component that is 90° out-of-phase with the in-phase component, by:
• sampling the received RF signal to create a digital signal;
• generating a first local oscillator signal and a second local oscillator signal that is 90° out of phase with the first local oscillator signal;
• mixing the first local oscillator signal with the digital signal to produce the in-phase component;
• and
• mixing the second local oscillator signal with the digital signal to produce the out-of-phase component;
• producing a frequency domain transformed representation of the digitized complex signal;
• producing a plurality of spectral content snapshots based on the frequency domain transformed representation of the digitized complex signal;
• and
• analyzing the plurality of spectral content snapshots in a neural network to determine a classification of at least one of the one or more radar signals.

A method of detecting a radar signal, comprising:

• receiving one or more radar band RF signals;
• processing the radar band RF signals to produce a received RF signal in an intermediate frequency band comprising at least one of the one or more radar signals;
• creating a digitized complex signal from the received RF signal, the digitized complex signal comprising a plurality of digital signal samples, and wherein each of the plurality of digital signal samples is comprised of at least an in-phase component and an out-of-phase component that is 90° out-of-phase with the in-phase component, by:
• sampling the received RF signal to create a first digital signal;
• applying a Hilbert transform to the first digital signal to generate a second digital signal;
• summing the first digital signal with the second digital signal to generate a third digital signal;
• generating a first local oscillator signal and a second local oscillator signal that is 90° out of phase with the first local oscillator signal;
• mixing the first local oscillator signal with the third digital signal to produce the in-phase component;
• and
• mixing the second local oscillator signal with the third digital signal to produce the out-of-phase component;
• producing a frequency domain transformed representation of the digitized complex signal;
• producing a plurality of spectral content snapshots based on the frequency domain transformed representation of the digitized complex signal;
• and
• analyzing the plurality of spectral content snapshots in a neural network to determine a classification of at least one of the one or more radar signals.