Method for satellite-supported position determining of a locator device

Abstract

In a method for the satellite-supported position determining of a locator device (1) in a coverage area (2) with an insufficient-quality satellite signal (5a, 5b, 5c, 5d) of a satellite (6a, 6b, 6c, 6d), the satellite signal (5a, 5b, 5c, 5d) is received outside the coverage area (2) by an omnidirectional reference antenna (3), and a repeating signal pattern and the satellite position data are extracted from the satellite signal (5a, 5b, 5c, 5d). Replica signals (10a, 10b, 10c, 10d) are generated for multiple transmitter antennas (7a, 7b, 7c, 7d) in the coverage area (2). The difference between the delay time between a predefined target position in the transmission region (8a, 8b, 8c, 8d) of the respective transmitter antenna (7a, 7b, 7c, 7d) and the satellite (6a, 6b, 6c, 6d) and the delay time between the reference antenna (3) and the satellite (6a, 6b, 6c, 6d) is determined as a shift parameter Δt, and the replica signal (10a, 10b, 10c, 10d) is generated from the satellite position data and the signal pattern that has been temporally shifted by the shift parameter Δt. The satellite signal (5a, 5b, 5c, 5d) and the replica signal (10a, 10b, 10c, 10d) correspond in the periphery of the coverage area (2) to the extent that they are not distinguished by the locator device (1), and the difference of the shift parameters Δt for replica signals (10a, 10b, 10c, 10d) of adjacent transmission regions (8a, 8b, 8c, 8d) is smaller than half the duration of the signal pattern.

Dependencies are inferred from the claim text.