Neural network match filter of chirp pulse compression

Because of the large amplitude of the sidelobe of match filter output, the sidelobe suppression must be used in the match filter which reduce the sidelobe jamming and the sensitivity of the system. Because the backpropagation (BP) neural networks have the ability to approximate any nonlinear function, it can be used in a match filter. Training of synaptic weights of the BP neural networks adopts the traditional grads algorithm. The combination between BP and niche GA (NGA) can improve the training convergence and insure to reach at global minimum