基于GprMax正演模拟的冬笋探测效果影响因素分析  

Analysis of Influencing Factors of Winter Bamboo Shoot Detection Based on GprMax forward Simulation

作　　者：刘永强 谢立敏[1] 王景恒 谢迎春 林伟 叶大鹏[1] LIU Yongqiang;XIE Limin;WANG Jingheng;XIE Yingchun;LIN Wei;YE Dapeng(Fujian Agriculture and Forestry University,Fuzhou 350108,China;Fuzhou Railway Construction Engineering Quality Testing Company,Fuzhou 350108,China)

机构地区：[1]福建农林大学机电工程学院,福州350108 [2]福州铁建工程质量检测有限公司,福州350108

出　　处：《机电技术》2024年第4期25-30,共6页Mechanical & Electrical Technology

基　　金：福建省林业科技项目(2023FKJ01)。

摘　　要：冬笋是毛竹林经营收益的主要来源之一,含有丰富的营养物质,能够为竹农带来良好的经济收入。文章通过建立Peplinski拟真土壤模型,采用GprMax正演模拟方法分析冬笋埋深、冬笋大小对探地雷达回波图像的影响,通过地下冬笋模拟测试比较冬笋、竹鞭、石头在0.9GHz天线中心频率下的探测效果,并进行了冬笋的实地探测。结果表明冬笋的探地雷达回波图像为典型的双曲线,其形状主要由冬笋埋深、探测物质与土壤之间的介电常数差异决定。由于探地雷达实地采集的数据样本较少且采集困难,通过设置冬笋大小、深度等不同参数得到的GprMax模拟仿真图像,结合探地雷达实际测量的回波图像分析影响冬笋探测效果的因素,可为后续进行探地雷达图像分类提供一定的数据支撑。Winter bamboo shoot is one of the main sources of income of bamboo forest management,which contains rich nutrients and can bring good economic income to bamboo farmers.Through the establishment of Peplinski simulated soil model,GprMax forward simulation method was used to analyze the effects of buried depth and size of winter bamboo shoots on the echo images of GPR.The detection effect of winter bamboo shoots,stones and bamboo whips at the center frequency of 0.9GHz antenna was compared through underground winter bamboo shoots simulation test,and the field detection of winter bamboo shoots was carried out.The results show that the echo image of winter bamboo shoots is a typical hyperbola,and its shape is mainly determined by the buried depth of winter bamboo shoots and the difference of dielectric constant between the detected material and the soil.Due to the small number of data samples collected by ground penetrating radar,it is difficult to collect data.The GprMax simulation image obtained by setting different parameters such as the size and depth of winter bamboo shoots and combining with the echo image measured by ground penetrating radar to analyze the influencing factors of the detection effect of winter bamboo shoots can provide certain data support for the subsequent image classification of ground penetrating radar.

关 键 词：GprMax 冬笋 探地雷达 回波图像 

分 类 号：P631.3[天文地球—地质矿产勘探] TN957.3[天文地球—地质学]