Method and road finisher for detecting interfering objects during the creation of a temperature field of the paving layer

A road finisher comprising:

• a paving screed for laying a paving layer;
• a detection unit for creating a temperature field of at least a portion of the paving layer in a laid state behind the paving screed;
• and
• a control unit which, based on measured values of the detection unit, is configured to detect an interfering object positioned temporarily on the paving layer within at least one predetermined measuring range of the temperature field, whose intrinsic temperature lies below a desired, nominal temperature range for the measuring range so that a mapping of the intrinsic temperature of the interfering object at least in places falsifies the temperature field to be generated;
• wherein the detection unit is adapted for detecting the interfering object to measure a temperature of at least one measuring point lying within the measuring range at different times, wherein the control unit is configured to detect that, when the paving layer is paved, the measuring point is covered by an interfering object at a first time, if, contrary to an expected material-specific cooling at a later second time during paving at the same measuring point, a larger temperature value lying within the nominal temperature range than a temperature value measured at the preceding first time is measured, and is further configured to assign a new temperature value to the measuring point in the temperature field instead of the temperature value detected at the first time.