1. A process control system with a wind-velocity-field measurement for use in a wind turbine having a rotor with a plurality of blades, the process control system comprising: a memory storing a wind-velocity-field data set including an array of wind-velocity-field characteristics associated with an array of known blade parameters; a sensor operable to generate a run-time signal representing a run-time parameter of at least one blade of the plurality of blades, for a wind condition; and a process controller operable to (i) access the run-time parameter generated by the sensor and the wind-velocity-field data set, (ii) compute a run-time wind-velocity-field parameter as a function of the run-time parameter and the wind-velocity-field data set, and (iii) generate a wind turbine control signal as a function of the run-time wind-velocity-field parameter for the wind condition.