将盲分离算法应用到多点定位系统的抗干扰处理中,介绍了对多点定位的干扰形式和混叠情况,分析了分离混叠信号的物理依据和相应的方法,阐述了盲分离算法的原理和白化方法。采用盲分离领域的快速固定点算法分离和重构信号,结合多点定位系统的特点作了相应改进,给出了详细的步骤。仿真结果表明,快速固定点算法能够有效分离多点定位系统的S模式混叠信号,获得了较高的成功率。
In this paper, blind separation algorithm is used in multilaterafion(MLAT) anti -jamming processing. The jamming forms and garble features are introduced, and then the physical parameters to separate aliasing signals are analysed. Blind separation algorithm and white processing are described. A modified fast ICA algorithm according to simulation results and the detailed steps are given. The experiment shows that fast ICA algorithm can rebuild signals successfully and is especially effective for Mode S.