  We experimentally resolve several weakly coupled nuclear spins in diamond
using a series of novelly designed dynamical decoupling controls. Some nuclear
spin signals, hidden by decoherence under ordinary dynamical decoupling
controls, are shifted forward in time domain to the coherence time range and
thus rescued from the fate of being submerged by the noisy spin bath. In this
way, more and remoter single nuclear spins are resolved. Additionally, the
field of detection can be continuously tuned on sub-nanoscale. This method
extends the capacity of nanoscale magnetometry and may be applicable in other
systems for high-resolution noise spectroscopy.
