Method and detector for searching a transmitter

A detector for searching for a transmitter comprising:

• at least a first and a second antenna for receiving a transmit signal of the transmitter,
• a position determining device for determining at least one orientation variation of the detector, and
• a processing device coupled at least to the first and the second antenna and to the position determining device,
• wherein the processing device is configured to detect the vectorial magnetic field strengths of the field emitted by the transmitter in at least two dimensions for at least a first and a second measurement point relative to a reference axis of the detector carried by a searcher, as well as an orientation difference (φ2−φ1) by the detector between at least the first and the second measurement point;
• wherein the detector further includes for determining a position vector (pi) representing the location of at least one measurement point relative to the location of the transmitter:
• a storage device, in which the following is stored:
• an assumed geometric relation between at least the first and the second measurement point;
• assumed initial values for a position vector (pi) in at least two dimensions in at least the first and the second measurement point, wherein the position vector (pi) represents the position of the detector relative to the transmitter;
• as well as
• an assumed orientation (α) of a transmitting antenna of the transmitter related to a first presettable reference direction;
• wherein the processing device is configured to calculate the vectorial magnetic field strengths of the field emitted by the transmitter in at least two dimensions for at least the first and the second measurement point based on the assumptions stored in the storage device as well as an orientation difference (φ2−φ1) detected by means of the position determining device;
• wherein the processing device is further configured to calculate a function (E) of an error vector (g) between the vectorial magnetic field strengths detected using at least the first and the second antenna and the calculated vectorial magnetic field strengths and to numerically minimize it by altering the assumptions stored in the storage device until a presettable tolerance threshold (tol) for the error vector (g) is undercut.