探地雷达种类请教各位.目前工程物探中所常用的地质雷达主要是哪些种类?具体型号是什么.谢谢!

GPR 1980s rapidly developed new technology due to the overseas research started early, so much more advanced technology, scientific research units are fully foreign technology on the basis of the development of China in recent years, but the study in GPR also made a lot of progress.
This paper describes the principle and the ground-penetrating radar system frame, analyzed the ground-penetrating radar image processing filtering this module. Paper is divided into the following several parts can be mainly points:
Firstly, both at home and abroad is introduced in GPR history and current situation of the study and research significance..
Second, the analysis of the basic principle of GPR signal model, system, etc., through the general principle that the integration process of noise.
Third, the median filter is introduced, the principle of median filter algorithm and characteristics make key analysis.
Four, the design flow chart, the median filter MATLAB software simulation analysis and simulation results.
Five, the last GR introduction GPR application software, software function of image processing, compared with simulation method with the median filter on image processing.
俺的见解

探地雷达（Ground Penetrating Radar简称GPR）又称地质雷达,透地雷达,是用频率介于10^6-10^9Hz的无线电波来确定地下介质分布的一种方法.
探地雷达的使用方法和原理是通过发射天线向地下发射高频电磁波,通过接收天线接收反射回地面的电磁波,电磁波在地下介质中传播时遇到存在电性差异的界面时发生反射,根据接收到电磁波的波形、振幅强度和时间的变化特征推断地下介质的空间位置、结构、形态和埋藏深度.
在坝体渗漏探测中,渗透水流使渗漏部位或浸润线以下介质的相对介电常数增大,与未发生渗漏部位介质的相对介质常数有较大的差异,在雷达剖面图上产生反射频率较低反射振幅较大的特征影像,以此可推断发生渗漏的空间位置、范围和埋藏深度.
探地雷达的用途：可用于检测各种材料,如岩石、泥土、砾石,以及人造材料如混凝土、砖、沥青等的组成.雷达可确定金属或非金属管道、下水道、缆线、缆线管道、孔洞、基础层、混凝土中的钢筋及其它地下埋件的位置.它还可检测不同岩层的深度和厚度,并常用于地面作业开工前对地面作一个广泛的调查.