Coherent integration method for high-speed target detection using angular inverse rotation transform

High-speed target often induces severe across range unit problem in the long-time coherent integration (LTCI). This paper designates the bottom-right corner of the 2-D compressed signal as the coordinate system origin. It establishes a novel angular inverse rotation transform that accurately corrects target's trajectory to the final location and achieves signal energy accumulation. Numerical simulation experiments and real-world measured data confirm the effectiveness of the proposed method.