Method of checking the association of radio nodes and objects with respect to a radio environment with a radio node number of at least three mutually spaced radio nodes by means of evaluation of interference signal components, wherein - each radio node of the radio node number has a respective radio interface and an individual time transmitter, - a respective time offset is present between the time transmitters of the radio nodes, - at least two radio nodes of the radio node number are reference radio nodes, a spacing of each reference radio node from the further reference radio nodes is known and the reference radio nodes form a reference system with a radio environment, - at least one radio node of the radio node number is a test radio node and an association of the at least one test radio node with the radio environment of the reference system is checked, - the method comprises a measuring process, a subsequent evaluating process and a comparison process, - during the measuring process signals with a carrier frequency are transmitted and received by radio nodes of the radio node number, - during the measuring process at least two radio nodes of the radio node number operate as transceivers and at least one radio node during the measuring process operates exclusively as a transmitter or exclusively as a receiver or as a transceiver, - the evaluating process comprises an evaluating step, - in the evaluating step an interference signal component is determined on the basis of a signal transmitted by a first radio node of the radio node number and received by a second radio node of the radio node number, - during the evaluating process in a first pass the evaluating step is performed at least once for at least one pair of reference radio nodes, - during the evaluating process in a second pass the evaluating step is performed at least once for a test radio node and a reference radio node, - in a comparison process the association with a radio environment is decided positively or negatively on the basis of at least one result of the first pass and at least one result of the second pass. - each radio node of the radio node number has a respective radio interface and an individual time transmitter, - a respective time offset is present between the time transmitters of the radio nodes, - at least two radio nodes of the radio node number are reference radio nodes, a spacing of each reference radio node from the further reference radio nodes is known and the reference radio nodes form a reference system with a radio environment, - at least one radio node of the radio node number is a test radio node and an association of the at least one test radio node with the radio environment of the reference system is checked, - the method comprises a measuring process, a subsequent evaluating process and a comparison process, - during the measuring process signals with a carrier frequency are transmitted and received by radio nodes of the radio node number, - during the measuring process at least two radio nodes of the radio node number operate as transceivers and at least one radio node during the measuring process operates exclusively as a transmitter or exclusively as a receiver or as a transceiver, - the evaluating process comprises an evaluating step, - in the evaluating step an interference signal component is determined on the basis of a signal transmitted by a first radio node of the radio node number and received by a second radio node of the radio node number, - during the evaluating process in a first pass the evaluating step is performed at least once for at least one pair of reference radio nodes, - during the evaluating process in a second pass the evaluating step is performed at least once for a test radio node and a reference radio node, - in a comparison process the association with a radio environment is decided positively or negatively on the basis of at least one result of the first pass and at least one result of the second pass.