摘要
航磁校准是航空磁探的重要环节,而对航磁数据进行带通滤波是航磁校准过程中的关键预处理步骤,将直接影响Tolles-Lawson航空平台磁干扰模型参数的估计精度,进而在一定程度上能够决定航磁补偿的最终效果。因此,选择更好的带通滤波器是提升航磁干扰补偿精度的一种有效途径。鉴于此,本文提出了一种基于Savitzky-Golay滤波器的航磁校准方法,通过对两个Savitzky-Golay滤波器级联来实现“带通”滤波。实验结果表明,与经典的FIR带通滤波器相比,本文提出的方法能够取得更好的补偿结果。
Aeromagnetic calibration is crucial for aeromagnetic survey and the band-pass filter has a key role in aeromagnetic calibration for pre-processing the aeromagnetic data to estimate the coefficients of the Tolles-Lawson model,which to some extent determines the performance of aeromagnetic compensation in an actual aeromagnetic survey.Therefore,it’s an feasible approach to seek a better band-pass filter to improve the precision of aeromagnetic compensation.In this paper,an aeromagnetic calibration method based on the Savitzky-Golay filter is proposed,where the band-pass filter is implemented by cascading two Savitzky-Golay filters.The experimental results demonstrated the proposed method performed better than the traditional one based on a FIR band-pass filter.
作者
窦振家
葛林
韩琦
DOU Zhenjia;GE Lin;HAN Qi(1715th Research Institute,China State Shipbuilding Corporation Limited,Hangzhou 310023,China;School of Computer Science and Technology,Harbin Institute of Technology,Harbin 150001,China)
出处
《智能计算机与应用》
2020年第9期29-32,共4页
Intelligent Computer and Applications
基金
哈尔滨工业大学重点创新项目培育计划(HIT.KISTP.201414)。
