METHOD AND SYSTEM FOR NEUTRALIZING THE EFFECT OF VIBRATION OF A TURNING AIRCRAFT FOR AIRPORT DOPPLER RADAR

摘要

A method of active neutralization of the effect of the vibrations of a rotary wing aircraft for a mono-static Doppler radar comprises: - a first step (104) of measurement and temporal extrapolation of the vibrational modes at the level of the antenna transmit-receive radar using a 3-axis vibration sensor, integral with the antenna and close to the phase center of the antenna; then a second step (106) of estimating the expected displacements of the transmit-receive antenna or of the first transmit antenna and of the second receive antenna; then a third step (108) of compensating for the displacements expected from the transmitting radar antenna at the level of the transmitting chain or of the receiving chain of the radar transmitter, in which the projection of the displacement vector of the phase center O on a pointing direction is calculated to determine the value of the compensation phase shift to be applied. Figure 4