Coherent Integration for Maneuvering Target Detection Based on Radon-Lv’s Distribution

This letter considers the coherent integration problem for a maneuvering target, involving range migration (RM) and Doppler frequency migration (DFM) within one coherent pulse interval. A new coherent integration method, known as Radon-Lv´s distribution (RLVD), is proposed. It can not only eliminate the RM effect via jointly searching in the target´s motion parameters space, but also remove the DFM and achieve the coherent integration via Lv´s distribution (LVD). Finally, several simulations are provided to demonstrate the effectiveness. The results show that for detection ability, the proposed method is superior to the moving target detection (MTD), Radon-Fourier transform (RFT), and Radon-fractional Fourier transform (RFRFT) under low signal-to-noise-ratio (SNR) environment.