Wind turbine and method for controlling a wind turbine or a wind farm

A wind power installation, comprising:

• a pod;
• a rotor arranged on the pod, the rotor being configured to rotate relative to the pod;
• a spinner on the rotor;
• a measuring unit arranged on at least one of the pod and the spinner, the measuring unit configured to emit at least one of microwaves and radar waves and detect reflections of the emitted microwaves and radar waves to acquire at least one of wind data, meteorological data and information with respect to a wind field proximate the wind power installation;
• and
• a regulator configured to control an operation of the wind power installation in dependence on the acquired data and information detected by the measuring unit.