US 12,332,358 B2
Method for processing a radionavigation signal generated by a satellite
Arnaud Lilbert, Moissy-Cramayel (FR)
Assigned to SAFRAN ELECTRONICS & DEFENSE, Paris (FR)
Appl. No. 18/012,097
Filed by SAFRAN ELECTRONICS & DEFENSE, Paris (FR)
PCT Filed Jun. 22, 2021, PCT No. PCT/FR2021/051129
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2021/260315, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 2006070 (FR), filed on Jun. 22, 2020.
Prior Publication US 2023/0258816 A1, Aug. 17, 2023
Int. Cl. H04L 1/06 (2006.01); G01S 19/21 (2010.01); G01S 19/39 (2010.01)
CPC G01S 19/21 (2013.01) [G01S 19/393 (2019.08)] 6 Claims
OG exemplary drawing
 
1. A method for processing a radionavigation signal coming from a satellite wherein a processing unit of a radio navigation receiver implements the following steps:
converting a radionavigation signal coming from a satellite into the frequency domain by means of a complex Fourier transform so as to obtain a frequency radionavigation signal comprising a real part I and an imaginary part Q, the real part I having an amplitude I2 associated with a frequency;
determining a distribution law I2 of the amplitude of the real component I of the frequency radionavigation signal;
determining an amplitude of the real component for which the distribution function is canceled, said amplitude defining a threshold;
processing the frequency radionavigation signal so as to filter the components whose amplitude is greater than the determined threshold.