Patent ID: 7106251
Filing Date: 2006-09-12
Classification: G01S

Abstract:
1. A receiver in a position-finding system which is configured to ascertain a position based on an evaluation of different propagation times for position-finding signals, the position-finding signals being emitted by a plurality of transmitters at known positions and being received by the receiver, comprising: a calculation unit configured to calculate a statistical value from a signal received by the receiver; and a detector unit configured to compare the statistical value with a threshold value and use the comparison to determine whether the received signal is a position-finding signal or whether the received signal is used for finding the position of the receiver; an estimation unit configured to estimate a ratio of the signal-carrier power to the noise-power spectral density of the received signal; and a determination unit configured to determine the threshold value from the estimated ratio of the signal-carrier power to the noise-power spectral density.