The invention relates to a synthetic aperture radar, having a first transmitting and receiving unit for transmission and for reception of a first frequency band, and a second transmitting and receiving unit for transmission and for reception of a second frequency band. In an exemplary embodiment, the method includes connecting at least one initiator with at least one target device. One way of measuring the load may consist of executing a number of instructions, in a unit of time, with numerous cores of the computing device. The first and second clip mechanisms are adapted for coupling together in a bracelet mode such that the stringing component substantially forms a loop.