A Novel Coprime Array Configuration for Real-Valued Sources in Moving Platform with Increased DOF

A novel moving coprime array is proposed in this work for real-valued sources. We know that for real-valued sources like AM and BPSK, we can explore the difference and sum coarray (DSC). Here, we propose a novel coprime array utilizing the array motion that achieves a large number of degrees of freedom (DOF). The array movement is limited to the half-wavelength so that the sensing environment remains unchanged. We analyze the proposed coprime array configuration considering two separate cases and present the number of uniform and unique DOF it achieves for each of the cases. The optimized configuration of the array is also provided. All the required simulations are carried out to show the effectiveness of the proposed array.