An agricultural harvesting machine, in particular a combine harvester or forage harvester, with at least one working assembly for harvesting a field crop and for processing harvested material from the field crop, wherein, during the operation of the harvesting machine, the harvested material is transported through the harvesting machine along a harvested material transport path as a flow of harvested material, with a monitoring assembly which has a measuring system for the analysis of the composition and/or of constituents of the harvested material and which is at least partially disposed on the harvested material transport path, wherein the measuring system has a first, passive optical sensor for receiving light from a range of wavelengths in a field of view, wherein, in a measurement routine, the measuring system receives image data from the first optical sensor in the range of wavelengths which represent the harvested material in a first section (A 1) of the flow of harvested material, wherein the harvesting machine has an evaluation device for determining a harvested material parameter, in particular relating to the composition and/or constituents of the harvested material, characterized in that the measuring system has a second, non-passive optical, in particular non-optical sensor for receiving sensor data in a field of measurement, in that in the measurement routine, the measuring system receives measured values from the second sensor which represent the harvested material in a second section (A 2) of the flow of harvested material, in that the first and the second sections (A 1, A 2) overlap at least in part in an overlapping section and in that in an analysis routine, the evaluation device correlates the image data for the overlapping section from the first sensor with the measured values for the overlapping section from the second sensor and thereby determines the harvested material parameter. with a monitoring assembly which has a measuring system for the analysis of the composition and/or of constituents of the harvested material and which is at least partially disposed on the harvested material transport path, wherein the measuring system has a first, passive optical sensor for receiving light from a range of wavelengths in a field of view, wherein, in a measurement routine, the measuring system receives image data from the first optical sensor in the range of wavelengths which represent the harvested material in a first section (A 1) of the flow of harvested material, wherein the harvesting machine has an evaluation device for determining a harvested material parameter, in particular relating to the composition and/or constituents of the harvested material, characterized in that the measuring system has a second, non-passive optical, in particular non-optical sensor for receiving sensor data in a field of measurement, in that in the measurement routine, the measuring system receives measured values from the second sensor which represent the harvested material in a second section (A 2) of the flow of harvested material, in that the first and the second sections (A 1, A 2) overlap at least in part in an overlapping section and in that in an analysis routine, the evaluation device correlates the image data for the overlapping section from the first sensor with the measured values for the overlapping section from the second sensor and thereby determines the harvested material parameter.