  Conventional control strategies for NV centers in quantum sensing are based
on a two-level model of their triplet ground state. However, this approach
fails in regimes of weak bias magnetic fields or strong microwave pulses, as we
demonstrate. To overcome this limitation, we propose a novel control sequence
that exploits all three levels by addressing a hidden Raman configuration with
microwave pulses tuned to the zero-field transition. We report excellent
performance in typical dynamical decoupling sequences, opening up the
possibility for nano-NMR operation in low-field environments.
