ISAR imaging of complex moving targets based on coherent accumulation type non-uniform sampling third-order autocorrelation function

ISAR imaging algorithm based on Coherent accumulation type non-uniform sampling third-order autocorrelation function (CANS-TAF) is proposed for complex moving targets. CANS-TAF defines a new non-uniform sampling third-order autocorrelation function (NTAF), which enables signal energy to accumulate coherently in the slow time delay two-dimensional data domain and improves the noise resistance performance of CPS parameter estimation. And the implementation process of this algorithm only requires complex multiplication, Scaled Fourier Transform (SFT) and Complete the Fast Fourier Transform (FFT) operation. It is a new non search parameter estimation algorithm that does not require tedious parameter search processes or the use of non-uniform Fourier transform. The final simulation experimental results demonstrate the superiority of the proposed algorithm in terms of Noise immunity.