无线电波透视几种成像方法对比

无线电波透视数据处理方法多样,常用的几种成像算法效果并不理想,异常形态往往呈条带状分布,异常边界模糊。为从根源上分析算法的缺陷并加以改进,给出了算法的具体实施步骤,并对结果进行了预测,用简单的数值模拟实例证明了常用的ART/SIRT算法缺点,同时给出一种不基于射线长度分配投影值的BICGSTAB算法,用几个简单的模型验证了算法的可靠性,探讨了扩大透视角度对于解释结果精确性的影响。结果表明,BICGSTAB算法大大地提高了反演结果与模型的吻合程度,以山西某矿的探测实例展示了BICGSTAB算法的解释效果,为实际的无线电波坑道透视施工和解释提供了一种新的手段。

Comparison of Several Tomography Methods for Wireless Radio Wave Perspective

The data processing method for wireless radio wave perspective are various.The several and common imaging algorithms don't achieve the desired effect and the distribution of abnormal form is zebraic and its boundary is fuzzy.In order to analyze the defects from the root and to do some improvements,the implementation steps of algorithm are given and the results are predicted.Some simple numerical simulations have been done to prove the shortages of ART/SIRT algorithm and meanwhile the BICGSTAB algorithm,not basing on the assign projection value of ray length is given and several simple models are taken to verify the reliability of algorithm.In addition,the effects of expanding perspective angle to explain the accuracy of result are discussed.It shows that the BICGSTAB algorithm improves greatly the coincidence of model and inverse result.A project case in Shanxi illustrates the effectiveness of BICGSTAB algorithm which provides a new approach to explain and construct the practical wireless radio wave penetration.