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本文详细介绍了中心频率为1GHz探地雷达脉冲波在道路铺砌层中传播的正演模拟技术。该模拟技术以实际发射的脉冲子波为基础，采用了更加符合实际的复介电常数，模拟合成了探地雷达脉冲波在层状铺垫介质中的反射曲线，并结合实际测得的深地雷达数据加以分析和解释。实例表明，该模拟方法为正确解释路面下结构提供了有效手段。
In this paper, the forward modeling technique of GPR pulse wave propagation in road paving is introduced in detail. Based on the actual pulsed wavelet, the simulation technique uses a more realistic complex permittivity to simulate and synthesize the reflection curve of ground penetrating radar pulse in layered bedding media. Combined with the actual measured depth Radar data to be analyzed and explained. The examples show that the simulation method provides an effective means to explain the structure under pavement correctly.