Radar Emitter Signal Recognition Based on Diagonally Integral Bispectrum
Yongjun Zhao · Journal of Information Engineering University · 2012
The bispectrum technique is widely used in signal analysis for its unique advantages of noise immunity,but there is large amount of data.Among the methods of reducing the amount of data,the integral bispectrum method is the best.But there are still a variety of shortcomings for all kinds of integral bispectrum techniques.A new method of feature extraction called diagonally integral bispectrum is proposed.By this method,bispectrum is integrated along the lines parallel to the diagonal line.This method not only avoids interpolation,but also contains more information.This new method is used to extract features of LPI radar signals.Under simulation conditions,the diagonoally integral bispectrum is compared with other methods.Results indicate that this new method is better.