Abstract:

Aiming at the carrier offset distance measure equipment (DME) impulse interference signal existing in Lband digital aeronautical communications system 1(LDACS1), the model of carrier offset DME signals is built. Firstly, it is verified that the carrier offset DME signal is cyclostationary. Then based on theoretical analysis, the cyclic autocorrelation function and cyclic spectrum of the carrier offset DME signal are derived. Finally, the computer simulation results indicate the theoretical analysis is correct.