北京大学学报（自然科学版）2019，Vol.55Issue(5)：797-803,7.DOI:10.13209/j.0479-8023.2019.071
利用单检波器数据估计高铁列车运行速度
Using the Data from One Receiver to Estimate Running Velocity of High-Speed Train
摘要
Abstract
Based on the fixed carriage structure assumption, the acquired dataset from one receiver near the high-speed railway can be used to estimate running velocity of high-speed train (HST). We derive the relationship between the load function and the speed of the railway, and then propose the HST velocity estimating method based on velocity scanning. Firstly, this method generates a series of amplitude spectra of load function according to a series of preset velocity. Then a series of cross-correlation coefficients between the pre-computed amplitude spectra and the amplitude spectrum of the real signal from one pre-buried receiver can be computed. The velocity with maximum cross-correlation coefficients is chosen as a final velocity estimation of HST. Finally, one synthetic data example and some real data examples illustrate our method’s effectiveness. Furthermore, the proposed method has the potential to be further extended to estimate running velocity of moving objects with the fixed structure in other road traffic.关键词
速度估计/ 高铁列车/ 振幅谱/ 互相关/ 速度扫描Key words
velocity estimation/ high-speed train/ amplitude spectrum/ cross-correlation/ velocity scanning引用本文复制引用
王晓凯,王保利,陈文超,李嘉琪..利用单检波器数据估计高铁列车运行速度[J].北京大学学报（自然科学版）,2019,55(5):797-803,7.基金项目
国家自然科学基金(41974131, 41774135)、中央高等学校基本科研业务费(bgjs2018003, xjj2016065)和国家重点研发计划(2017YFB02 02902)资助 （41974131, 41774135）
