Patent ID: 9596610
Date: 2017-03-14
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method for detecting and eliminating radio frequency interferences in real time, characterized in that it comprises the stages of: a) converting an analog input signal from an antenna into a different frequency to that of the input signal, b) digitalizing said converted analog signal, c) detecting and eliminating the radio frequency interferences of said digitalized signal and obtaining a digitalized signal without interferences i) transforming the digitalized signal to a signal in the time domain, frequency domain, in the space of time and frequency, the space of time and scale or in the space of time, frequency and scale, ii) calculating the similarity of the signal to a variable with normal distribution of said digitalized signal, of said transformed signal or of both said digitalized signal and said transformed simultaneously, where a statistical normality test is used in said calculation, iii) estimating a threshold to be applied in the eliminating step where said threshold is a function of the scale of said transformed signal and/or of the result of said statistical test, iv) applying said estimated threshold to said transformed signal and eliminating or modifying the samples of said signal which exceed said threshold such that a digitalized signal without interferences is obtained, v) transforming, inversely to the first transformation, said digitalized signal without interferences, d) converting said digital signal without interferences to an analog signal without interferences and e) converting said analog signal without interferences to an analog signal in the same frequency as the initial analog signal coming from said antenna and providing it to be used in a GNSS receiver.