RCS Reconstruction Based on GTD Using Enhanced Orthogonality-Spike Scanning Method

In this paper, a self-driven signal parameter estimation method in the high-frequency region is proposed based on GTD, to accurately reconstruct the radar cross section (RCS) of a complex target by combining the noise subspace-enhanced quadrature and spike scanning techniques. Compared with existing studies, the proposed algorithm can distinguish more coherent scattering centers and achieve more accurate RCS reconstruction of non-cooperative radar targets with high parameter estimation accuracy under low signal-to-noise ratio (SNR). Simulation and measurement results verify the feasibility of the algorithm.