Classical saw-tooth Frequency Modulated Continuous Wave (FMCW) radars experience a coupling betweenthe maximum unambiguous Doppler-velocity interval, maximum operational range, range-resolution and processing gain.

Operationally, a trade-off is often necessarily made betweenthese parameters. In this paper, we propose a waveform and aprocessing method that decouples the aforementioned parameterdependencies at the price of using multiple receiver channelswithin the radar. The proposed method exploits the fact that beatfrequency signals have the same baseband frequency, even if thetransmitted and received chirps occupy different radio frequencybands, and have different center-frequencies. We concatenatethose baseband signals in the time-frequency domain to restorethe range-resolution and processing gain. An overview of FMCWparameters trade-off for related waveforms and a feasibility andlimitations analysis of implementing the proposed processingmethod are presented. The method is verified by simulationsand experiments with an FMCW radar for stable, moving andextended-moving targets. We additionally have highlighted itsnon-idealities in the simulations and experiments. We found thatthe proposed method indeed alleviates the trade-off betweenFMCW operational parameters and allows the extension ofthe Doppler ambiguity interval without compromising on thoseparameters.