Abstract: A radar detector employs parameterized subchannel analysis for discrimination of radar signals. Specifically, the signal processing of the radar detector includes a subchannel processor for evaluating programmable sub-bands of a channel for enhanced pattern identification. The subchannel processor specifically incorporates multiple digital demultiplexing stages, producing N signal subchannels at selectable frequencies. The subchannels are decimated from the original sampling frequency to a selectable lower sample frequency, e.g. using a cascaded integrator-comb filter, and then filtered, e.g. using a finite impulse response filter. The resulting sub channels 0 to N-1 are delivered for Neural Network assessment. Importantly, the subchannel frequencies, decimation rates and IIR filter profiles may be selectively adjusted by the control circuits to emphasize relevant patterns to be extracted by the neural network from a received radar signal.

Abstract: A radar detector employs parameterized subchannel analysis for discrimination of radar signals. Specifically, the signal processing of the radar detector includes a subchannel processor for evaluating programmable sub-bands of a channel for enhanced pattern identification. The subchannel processor specifically incorporates multiple digital demultiplexing stages, producing N signal subchannels at selectable frequencies. The subchannels are decimated from the original sampling frequency to a selectable lower sample frequency, e.g. using a cascaded integrator-comb filter, and then filtered, e.g. using a finite impulse response filter. The resulting sub channels 0 to N?1 are delivered for Neural Network assessment. Importantly, the subchannel frequencies, decimation rates and IIR filter profiles may be selectively adjusted by the control circuits to emphasize relevant patterns to be extracted by the neural network from a received radar signal.

Abstract: The use of complex analysis enables enable various new methods and strategies for the identification of a RF transmission source in a radar detector. The incoming signal (13) is processed using complex signal representations (I, Q), allowing for the recognition of signal patterns in the radio spectrum which may be hidden by conventional methods using only demodulation of signals which are in-phase with a local oscillator. The additional signal information can aid in overcoming signal and noise discrimination challenges faced by radar detectors using traditional band-limited, scalar sampling strategies, including the challenge of discriminating between police radar signals and other radar sources that utilize signals in the same frequency ranges (e.g., radar door openers, traffic sensors, vehicle-based collision avoidance, cruise control, blind spot monitor emitters).