基 于 冲 激 响 应 的 探 地 雷 达 快 速 仿 真 方 法 研 究

Current ground‑penetrating radar (GPR) simulation approaches are often computationally intensive and exhibit poor flexibility, particularly when employing stepped‑frequency continuous‑wave (SFCW) signals. Conventional techniques typically simulate each frequency sequentially, resulting in low computational efficiency and rendering them unsuitable for complex scenarios. To address these limitations, this study introduces an impulse – response‑based fast simulation method. By modeling the GPR system as a linear time‑invariant (LTI) system, the proposed approach generates echo signals through the convolution of impulse responses with input signals and derives a system transfer function to facilitate the computation of SFCW echo signals. This strategy effectively eliminates the need for repetitive simulations at each frequency, thereby substantially enhancing the computational efficiency. Comparative experimental evaluations demonstrate that the proposed method significantly reduces simulation time while maintaining high accuracy, with deviations from actual measurements controlled within 4.34%. The developed methodology successfully addresses the longstanding challenges of time consumption and excessive resource utilization in GPR simulations, thereby providing a robust framework for efficient GPR emulation and its application in complex environments.