电子科技大学学报2026，Vol.28Issue(4)：571-579,9.DOI:10.12178/1001-0548.2025103
增强网络空间坐标系性能的时延滤波方法
Delay filtering method for enhancing the performance of cyberspace coordinate systems
李雄庆 1赵冬青 1李林阳 2樊文哲 1袁俊俨1
作者信息
- 1. 信息工程大学地理空间信息学院,郑州 450001
- 2. 信息工程大学地理空间信息学院,郑州 450001||武汉大学测绘学院,武汉 430079
- 折叠
摘要
Abstract
The accuracy of cyberspace coordinate systems depends on high-quality delay data,yet random noise in real-world network environments severely limits the effectiveness of traditional filtering methods.To address the insufficient balance among noise suppression,statistical feature preservation,and step-change detection in existing approaches,this paper proposes a segmented delay filtering(SDF)method based on the Savitzky-Golay(SG)filter.The method dynamically segments delay data using a change rate detection strategy.For long segments,the SG filter is applied to fit the trend,while median filtering is used for short segments to suppress noise.This hybrid approach effectively suppresses outliers and smooths delay curves while preserving step-like abrupt changes.Validation experiments on real network datasets demonstrate that the SDF method reduces the 95%percentile relative error(NFPRE)by approximately 18.59%and significantly decreases delay variation rates,thereby enhancing the positioning accuracy and stability of cyberspace coordinate systems.关键词
时延滤波/时延随机污染/SG滤波算法/网络空间坐标系Key words
delay filtering/random delay contamination/SG filtering algorithm/cyberspace coordinate system分类
信息技术与安全科学引用本文复制引用
李雄庆,赵冬青,李林阳,樊文哲,袁俊俨..增强网络空间坐标系性能的时延滤波方法[J].电子科技大学学报,2026,28(4):571-579,9.
