Over the past four years Radar Portal Systems (RPS) has developed innovative new technologies allowing more accurate assessment of road pavements. The RoadScout system encapsulates these new technologies, allowing high speed capture of the entire road environment with one system, including the surface, subsurface and surrounds; improving project planning and the ability of asset managers to maintain their road network. A patented GPR system has been developed, based on noise modulated spread spectrum radar, which allows the creation of large arrays of high-speed wideband subsurface imaging devices, without the associated size and complexity of existing technologies. The result is a 3D GPR system consisting of an array of 24 robust ground-coupled antennas, spanning the maximum vehicle width of 2.5 m. At speeds of up to 100 km/h, each radar unit is capable of penetrating to a depth of over 1.2 m with a sample spacing of 6 cm. The system produces a full 3D image of the road subsurface, without the need for traffic control. Complementing the subsurface imaging system is a high-resolution surface imaging system utilizing artificial lighting, laser roughness profiling units, high resolution panoramic camera system, and a GPS and wheel encoder positioning system. The result is an extensive array of information, collected by the one system. To support this technology, a custom software package has been developed which to allow the display and analysis of the large volumes of data produced. The software package also incorporates automation techniques, allowing identification of surface cracking and automatic tracking of GPR layer depths. Work is progressing on the integration of FWD measurements. This technology has been applied in numerous projects in Australia, from the analysis of bridge structures at high speed, to the detection of the structure of concrete and asphalt pavements. We are also now in the process of applying this technology to larger network level analysis.
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机译：在过去的四年里，雷达门户系统（RPS）开发了创新的新技术，允许更准确地评估道路路面。 RoadScout系统封装了这些新技术，允许具有一个系统的整个道路环境的高速捕获，包括表面，地下和环绕物;改善项目规划和资产管理人员维持道路网络的能力。基于噪声调制扩频雷达开发了专利的GPR系统，这允许创建大阵列的高速宽带地下成像装置，而无需现有技术的相关尺寸和复杂性。结果是3D GPR系统，由24个稳健的接地天线阵列组成，跨越2.5米的最大车辆宽度。在高达100 km / h的速度下，每个雷达单元能够穿透到超过1.2μm的深度，样品间距为6厘米。该系统产生了道路地下的完整3D图像，无需交通控制。补充地下成像系统是利用人造照明，激光粗糙度分析单元，高分辨率全景摄像机系统和GPS和车轮编码器定位系统的高分辨率表面成像系统。结果是由一个系统收集的广泛信息数组。为了支持这项技术，已经开发了一种自定义软件包，以允许显示和分析产生的大量数据。软件包还采用了自动化技术，允许识别表面开裂和GPR层深度的自动跟踪。工作正在进行FWD测量的集成。该技术已在澳大利亚的众多项目中应用，从高速分析桥梁结构，以检测混凝土和沥青路面结构。我们现在还在将该技术应用于更大的网络级别分析的过程中。
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