Gm Global Technolgoy Operations, Inc.

Harald Berninger

Gerald Schmidt

An automatic wayfinding method for an ego or first vehicle is disclosed. The method includes receiving position information transmitted by at least one lead vehicle and constructing a route based on the received position information.

Wayfinding method and device

The invention pertains to a method for the field strength-dependent analysis of radio information for vehicles with a radio receiver unit (I), comprising a scanner-receiver (1), which supplies a radio data signal (RDS) as an identification sign for a specific transmission program through a radio data signal program identification decoder (3). The currently received field strength appears at the output of an analog-to-digital converter (4), and the currently received frequency (f) is measured by a frequency counter (5). The scanner-receiver (1) is periodically scanned, and the RDS sign, field strength (FS) and frequency (f) are linked in a microcomputer unit (II) for identification of the received transmitters and for assignment of the received field strength to the corresponding transmitter. This assignment is used to form current field-strength profile, which depends on the receiving location. In the arithmetic-logic unit (9) of the microcomputer system (II), the current field-strength profile is compared with reference field-strength profiles from a reference memory (8, 11). When they are the same, an output unit (10) is supplied with the information that is assigned to the reference field-strength profile.

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Ruesselsheim, Germany

Harald Berninger