Abstract: In order to solve the ADS-B 1090ES signal pulses overlap problem of multi-point positioning technology, an improved third-order convergence of Newton iterative fast independent component analysis(Fast ICA)algorithm is proposed. Through separating mixed of multiple radiation sources signal, to recovery and reconstruct the original signal, achieve extraction of the target source signal. This paper compares basic algorithm with improved Fast ICA algorithm convergence speed, by calculating the similarity coefficient matrix, analyzes the separation performance of the algorithm. Finally, the simulation results verify the feasibility and effectiveness of the algorithm, the results show that the algorithm has better separation efficiency, convergence is faster.

Key words: multilateration, ADS-B 1090ES, Fast ICA, signal separation, similarity coefficient matrix