Patent ID: 7362827
Filing Date: 2008-04-22
Classification: G01S,H04L

Abstract:
1. A method for decoding of a signal in an interrogation/response type of communications system, a received signal being formed by a video signal S vh , S vb and a signal S dh , S db containing the data said signals respectively corresponding to the signals received at the high antenna 1 h of the receiver and at the low antenna 1 b of the receiver of an IFF (identification Friend or Foe) said data signal being a MSK (Minimum Shift Keying), FSK (Frequency Shift Keying) or DPSK (Differential Phase-Shift Keying) modulated signal wherein the method comprises the following steps: signals S converting the intermediate frequency analog signals into a digital signals, by using a comparator having a threshold set as a function of the S sampling the digital signals signals S transmitting the video signals S transmitting the sampled and filtered signals S