Suppression of Linear Interference Signal in GPR Profiling by Improved <italic style="font-style: italic">f-k</italic> Filtering Approach

ZHANG Li-wen; NIE Jun-li

doi:10.12263/DZXB.20200986

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Suppression of Linear Interference Signal in GPR Profiling by Improved f-k Filtering Approach

PAPERS | 更新时间：2025-12-08

- Suppression of Linear Interference Signal in GPR Profiling by Improved f-k Filtering Approach
- ACTA ELECTRONICA SINICA Vol. 50, Issue 6, Pages: 1444-1450(2022)
- 作者机构：
  
  贵州大学国土资源部喀斯特环境与地质灾害重点实验室，贵州贵阳 550025
- 作者简介：
- 基金信息：
- DOI：10.12263/DZXB.20200986
  CLC： P631.1;
- Received：06 September 2020，
  
  Revised：2021-04-30，
  
  Published：25 June 2022
- 稿件说明：
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张力文,聂俊丽.利用改进的f-k滤波方法压制探地雷达中的线性干扰[J].电子学报,2022,50(06):1444-1450.

ZHANG Li-wen,NIE Jun-li.Suppression of Linear Interference Signal in GPR Profiling by Improved f-k Filtering Approach[J].ACTA ELECTRONICA SINICA,2022,50(06):1444-1450.
张力文,聂俊丽.利用改进的f-k滤波方法压制探地雷达中的线性干扰[J].电子学报,2022,50(06):1444-1450. DOI： 10.12263/DZXB.20200986.

ZHANG Li-wen,NIE Jun-li.Suppression of Linear Interference Signal in GPR Profiling by Improved f-k Filtering Approach[J].ACTA ELECTRONICA SINICA,2022,50(06):1444-1450. DOI： 10.12263/DZXB.20200986.

摘要

由倾斜界面产生的空间干扰在探地雷达剖面中表现为具有一定倾向的线性干扰，通常采用

f-k

滤波方法来压制线性干扰.然而，由于常规的

f-k

滤波方法采用FFT变换中的复共轭特征，对实际数据中存在的负视速度（负波数）信号没有特别关注和处理，对线性干扰的压制效果不理想，这对数据的解译有着很大的影响.为此，本文对

f-k

滤波方法进行改进，实施过程中对雷达数据经

f-k

变换之后，在负波数到正波数进行全域分析，区别压制实际数据中的负波数信号，而不仅限于压制正波数信号变换之后的对称负波数信号.改进之后的

f-k

滤波方法在模拟数据和实际生产数据中均能有效压制此类线性干扰，凸显探测目标.

Abstract

The space interference generated by the inclined interface is a linear noise with a certain tendency in the GPR profile

and it can be suppressed by

f-k

filtering approach. Because the conventional

f-k

filtering method uses the complex conjugate feature of FFT transform

it does not pay special attention to and process the negative apparent velocity (negative wave number) signal in the actual data

and the suppression effect of linear interference wave is not ideal

which has a great impact on the data interpretation. Therefore

this study improves the

f-k

filtering method. In the process of filtering

this study analyzes the data of positive and negative wave number domain after

f-k

transformation of actual GPR data

and identifies and suppresses the positive and negative wave number signals in the actual data respectively. The improved

f-k

filtering method can effectively suppress the linear noise and highlight the detection target in both simulation data and actual production data.

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Keywords

references

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⁰

Suppression of Linear Interference Signal in GPR Profiling by Improved f-k Filtering Approach

DOI：10.12263/DZXB.20200986

摘要

Abstract

关键词

Keywords

references