Efficient weak manoeuvring target detection method for DSSS signal

A novel efficient detection method is proposed for radar transmitting direct sequences spread spectrum (DSSS) signals with high dynamics in the low signal-to-noise ratio (SNR) scenario. The core idea of the proposed method is first to eliminate the linear code phase drift via keystone transform (KT), then the derived modified Radon-Fourier transform (MRFT) is employed to accumulate the energy of the target effectively to achieve target detection and parameter estimation. Compared with the generalised RFT (GRFT) method, the proposed method has a similar detection performance, but requires much lower computational burden. Simulation results verify the validity of the proposed method.