Target signal extraction from received, interference-laden signals - uses mean gap in environmental signal during mean value formation on received power and comparison with expected threshold

The extraction takes place during direction finding and for each received angle is referred to a measured received power to an estimated interference output in each environment interval of the angles. During the mean value formation at the point of the associated received angle, a mean value gap in the environment interval is preset and the standardised received power is compared with an expected threshold. If the threshold is exceeded a continuous mean value formation of the modified powers and their standardisation are repeated on the base of the newly obtained mean values, until a standardised modified power is without excess of the expected threshold. The first modified power and further such powers are obtained from the previous modified powers obtained by the mean value formation.