利用Google Earth影像测制1∶2000地形图

摘要

PP composites strengthened with ceramic particles were prepared by melting extrusion molding.The mechanical properties of the composites were tested.The effects of the surface treatment on the performance of the composites were investigated.The results indicated that the tensile strength and impact strength of the composites with surface treated ceramic particles are higher than those with untreated ceramic particles.Scanning electron microscope（SEM）observation of fracture surfaces showed that poor bonding interface with gaps between untreated ceramic particles and the PP matrix is responsible for the lower properties of the corresponding composites.The couple agent KH-550 surface treated ceramic particles have a strong adhesion with PP so that less ceramic particles were pull out during tensile process.%为减轻地形测量的外业工作量,更快更好地完成地形图测绘任务,本文提出了利用Google Earth影像进行地形图测绘的方法,并介绍了具体的测量方案、步骤,统计了精度。测量结果表明,在有Google Earth清晰影像的地区,只要采取一定的质量控制措施,利用Google Earth影像测图,其精度可以满足1∶2 000地形图的精度要求。该方法简单快捷、可操作性较强。