基于小波变换的机载雷达测绘遥感影像信息数据融合方法

Data fusion method of airborne radar mapping and remote sensing image information based on wavelet transform

在融合机载雷达测绘遥感影像信息数据的过程中,由于原始机载雷达测绘遥感影像反馈信号在频域分布上具有多元化的属性,导致融合后影像的质量相对较低。为此,文章提出基于小波变换的机载雷达测绘遥感影像信息数据融合方法。该方法通过在小波变换设置了以频率为基准的窗口函数,并结合遥感影像反馈信号所处频域与频率函数状态之间的关系,建立了待分析遥感影像信号与频率窗内的高频频域分布参数之间的乘积关系,从而得到所需的信号频谱特性,在进行机载雷达测绘遥感影像信息数据融合阶段,结合遥感影像反馈信号与有限区域范围之间的关系,对其进行适应性融合。测试结果表明,融合后影像在完整度、清晰度以及综合质量方面均处于较高水平。

in the process of fusion airborne radar surveying and mapping remote sensing image information data,due to the original airborne radar surveying and mapping remote sensing image feedback signal in the frequency domain distribution,the quality of the fusion image is relatively low,therefore,this paper puts forward the method of airborne radar remote sensing image information data fusion bascd on wavelet transform.Thc method sets the window function based on frequcncy in the wavelet transform,and combines the relationship betwecn the frcqucncy domain and the state of the frequcncy function,and cstablishes thc product rclationship between the distribution parameters of the remote sensing image signal and the frequency window.The test results showed that thc post-fusion images wcrc at high levels in terms of completeness,clarity and integrated quality.