海浪磁噪声背景中动目标航空磁异常检测算法  

Airborne magnetic anomaly detection algorithm for moving target under ocean wave generated magnetic noise

作　　者：熊雄[1] 杨日杰[1] 王鸿吉[1] 

机构地区：[1]海军航空工程学院电子信息工程系,山东烟台264001

出　　处：《华中科技大学学报（自然科学版）》2015年第3期100-106,共7页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61271444);'泰山学者'建设工程专项资助项目(ts20081130)

摘　　要：针对传统正交基分解检测算法不适用于海浪磁噪声背景下动目标检测航空磁异常检测问题,提出了基于自适应海浪磁噪声抑制的动目标航空磁异常检测算法.基于Weaver海浪磁场模型提出以观测海洋风浪谱生成的风浪位移信号作为参考噪声输入,利用最小均方自适应滤波算法对海浪磁噪声进行估计和抑制.基于传统正交基函数分解算法和动目标的航空磁异常探测模型,设计了动目标航空磁异常检测算法.仿真实验数据处理结果表明,该算法具有较好的海浪磁场抑制能力,能极大地提高海浪磁噪声条件下微弱磁异常动目标的检测能力.As traditional orthonormal basis function algorithm is inapplicable for moving magnetic tar‐get detection by airborne magnetic anomaly detector under ocean environment ,a magnetic anomaly de‐tection algorithm was proposed based on adaptive ocean wave magnetic noise suppression and moving target detection model .A least mean square (LMS) adaptive filter for ocean wave generated magnetic noise suppression was proposed based on Weaver′s mathematical model ,and the reference noise of the adaptive filter was surface displacement signal generated by observing the ocean waves spectrum . Then ,airborne magnetic anomaly detection algorithm for moving target was established based on moving target detection model and traditional orthonormal basis function algorithm .Simulation re‐sults indicate that the performance of the proposed detector is effective for ocean wave generated mag‐netic noise suppression ,and it has a good performance of detection low‐observable moving magnetic target in ocean environment .

关 键 词：磁异常探测 磁偶极子模型 动目标 海浪磁噪声 正交基函数 自适应滤波 

分 类 号：P631.222[天文地球—地质矿产勘探]