METHOD FOR DETECTING AND PROCESSING PULSED SIGNALS IN A RADIO SIGNAL

摘要

The invention concerns a method for detecting and processing in a radio signal received by a receiver, any pulsed signal present in the radio signals applied at the input of a RF receiver, the receiver including an analog-to-digital converter for digitally coding N bits of P successive samples of the analog signal applied in the receiver input and a calculator for processing said digital signals and on the basis of a histogram an occupancy of the digitized samples, classified by ranges Fx of sample levels increasing in amplitude, a range Fn is determined among the Fx ranges, based on which, the total number of digitized samples Nnor contained in the Fn ranges and those less than Fn is not less than a normality threshold Nn, Nn being a predetermined number depending on the sensitivity of the detection of pulsed signal which it is desired to produce. The invention is applicable to the protection of GPS-type radio receivers against interfering pulsed radio signals.