For the traditional target localization algorithms of frequency diverse array (FDA), there are some problems such as angle and\ndistance coupling in single-frequency receiving FDA mode, large amount of calculation, and weak adaptability. This paper\nintroduces a good learning and predictive method of target localization by using BP neural network on FDA, and FDA-IPSO-BP\nneural network algorithm is formed. The improved particle swarm optimization (IPSO) algorithm with nonlinear weights is\ndeveloped to optimize the neural network weights and biases to prevent BP neural network from easily falling into local minimum\npoints. In addition, the decoupling of angle and distance with single frequency increment is well solved. The simulation experiments\nshow that the proposed algorithm has better target localization effect and convergence speed, compared with FDA-BP\nand FDA-MUSIC algorithms.
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