Abstract <p>The problem of tracking an object equipped with a marker with spatio-temporal modulation of the emitted signal is considered. The spatio-temporal modulation is provided by both two stationary emitters and a marker with a rotating emitter. A formal synthesis of tracking algorithms is performed based on the use of an approximate solution of the generalized Stratonovich equation, which differs from the traditional representations of this equation by consideration of the dependence of the observation function not only on time but also on an arbitrary number of other independent variables that allow, for example, consideration of the shape of the observed object. In fact, the synthesized algorithm for tracking an object with a marker equipped with a rotating emitter determines the structure of the multiconnected closed system of tracking the object coordinates, as well as the initial phase, frequency, and radius of rotation of the marker emitter with the help of a TV sensor. The correctness of the synthesis results is confirmed by simulation modeling. The synthesized algorithm provides an enhanced noise immunity of the tracking process with respect to several stationary interfering emitters in field of view of the TV sensor.</p>