Method and module for classifying a radiofrequency communication link, in direct or indirect connection

Abstract

Method and module for classifying a radiofrequency communication link, in direct or indirect connection The invention relates to a method (50) for classifying a communication link, in direct or indirect connection, between a first and a second device, comprising the following steps: - obtaining (52) the orientation of each antenna of said first and second devices expressed in a reference frame common to said devices;- obtaining (60) a first arrival angle vector (62) of the signal, received by the first device, and transmitted according to said link by the second device, and a second arrival angle vector (64) of the signal received by the second device and transmitted according to said link by the first device, the first and second vectors being expressed in said common reference frame, - classification (70) of said link into indirect link (74) if the first and second vectors are of distinct directions, or of the same direction and the same sense. Figure for the abstract: Figure 3;

Claims

received by the first device and transmitted according to said link to be classified by the second device and a second arrival angle vector characterizing the signal received by the second device and transmitted according to said link to be classified by the first device, the first and second arrival angle vectors of said radiofrequency signal being expressed in said common reference system, - classify said radiofrequency communication link as an indirect radiofrequency communication link if the first and second vectors are of distinct directions, or if they are of the same direction and the same sense.

11. Radiofrequency communication device comprising: - an antenna system comprising at least two radiofrequency antennas, and - a tool for obtaining an angle of arrival vector characterizing a received radiofrequency signal, the device being characterized in that it further comprises a module for classifying a radiofrequency communication link according to claim 10.

12. A radio frequency communication device according to claim 11, wherein said antenna system comprises three antennas not aligned in space.

13. Radio frequency communication device according to claim 11 or 12, wherein said device is configured to transmit and / or receive Ultra Wide Band UWB or long range LoRa® radio frequency signals.

14. System for locating radiofrequency communication devices characterized in that it comprises: - a set of at least two communication devices each comprising: - an antenna system comprising at least two radiofrequency antennas, and - a tool for obtaining an angle of arrival vector characterizing a received radiofrequency signal; - at least one module for classifying a radiofrequency communication link according to claim 10.