  This paper proposes a novel signal processing technique that doubles the
range resolution of FMCW~(Frequency Modulated Continuous Wave) sensing without
increasing the required bandwidth. The proposed design overcomes the resolution
limit imposed by bandwidth by exploiting the phase consistency observed in the
special frequency variation of the beat signal derived from triangle FMCW.
Through this approach, the resolution is doubled while maintaining high
spectrum SNR. A system model for signal processing is presented, and the energy
distribution of the derived beat spectrum is analyzed. The effectiveness of the
proposed technique is validated through model-based simulations.
