[1] Ning B, Liu C Y. Technology and application of train operation control system for China rail transit system[J]. Journal of the China Railway Society, 39, 1-9(2017).

[2] Li Q, Chen Z J. Research on backup mode of train control system based on train-to-train communication[J]. Journal of Railway Science and Engineering, 19, 3407-3416(2022).

[3] Hamid H A, Nicholson G L, Roberts C. Impact of train positioning inaccuracies on railway traffic management systems: framework development and impacts on TMS functions[J]. IET Intelligent Transport Systems, 14, 534-544(2020).

[4] Li G Y, Sun S Z, Wang L et al. Research and application of indoor visible light communication positioning technology[J]. Acta Geodaetica et Cartographica Sinica, 51, 909-922(2022).

[5] Wang J G. Potential application and challenges for urban rail transit control technology based on visible-light communication[J]. Urban Mass Transit, 19, 1-4(2016).

[6] Xu S W, Wu Y, Wang X F. Visible light positioning algorithm based on particle swarm optimization compressed sensing[J]. Chinese Journal of Lasers, 48, 0306004(2021).

[7] Zhang Y P, Meng N, Xu Y L et al. Train positioning optimization with Newton-UKF algorithm using visible light communication[J]. Journal of Huazhong University of Science and Technology (Natural Science Edition), 51, 1-7(2023).

[8] Guan Y, Sun D D, Yin S G et al. High precision visible light indoor positioning based on image communication[J]. Chinese Journal of Lasers, 43, 1206001(2016).

[9] He J, Zhou B. Vehicle positioning scheme based on visible light communication using a CMOS camera[J]. Optics Express, 29, 27278-27290(2021).

[10] Li H P, Huang H B, Xu Y Z et al. A fast and high-accuracy real-time visible light positioning system based on single LED lamp with a beacon[J]. IEEE Photonics Journal, 12, 7906512(2020).

[11] Zhang Y P, Zhu D Y, Ma J M et al. Subway train positioning based on monocular vision and optical camera communication[J]. Laser & Optoelectronics Progress, 59, 1606001(2022).

[12] Fan Q W, Li H B, Pei H L et al. Instrument development and distance measurement algorithm based on digital image[J]. Advanced Engineering Sciences, 52, 201-205(2020).

[13] Wang Y, Wang X J. On-line three-dimensional coordinate measurement of dynamic binocular stereo vision based on rotating camera in large FOV[J]. Optics Express, 29, 4986-5005(2021).

[14] Huang P, Cao Z, Wang H. Stereo visual odometry based on ring feature matching[J]. Acta Optica Sinica, 41, 1515002(2021).

[15] Liu Y F, Wang H, Dong C Y et al. A car-following data collecting method based on binocular stereo vision[J]. IEEE Access, 8, 25350-25363(2020).

[16] Sun S Z, Li G Y, Feng Q Q et al. Indoor positioning based on visible light communication and binocular vision[J]. Optics and Precision Engineering, 28, 834-843(2020).

[17] Zhao J X, Zhou F Q. High-precision center location algorithm of small-scale focal spot[J]. Infrared and Laser Engineering, 43, 2690-2693(2014).

[18] Wang X X, Tang X M, Zhu X Y et al. Centroid extraction method of Gaofen-7 satellite footprint spots and stability monitoring[J]. Acta Optica Sinica, 41, 2428001(2021).

[19] Pan D, Li Y L, Gao D et al. Center extraction method of multiple and overlapping faculae based on ellipse fitting[J]. Acta Optica Sinica, 40, 1410001(2020).

[20] Trong H D, Myungsik Y. Visible light communication based vehicle positioning using LED street light and rolling shutter CMOS sensors[J]. Optics Communications, 407, 112-126(2018).

[21] Pan D, Zhou Q, Liu X et al. Modeling and detection of star spot in high dynamic condition[J]. Acta Photonica Sinica, 51, 0304002(2022).

[22] Lin P X, Hu X B, Ruan Y K et al. Real-time visible light positioning supporting fast moving speed[J]. Optics Express, 28, 14503-14510(2020).

[23] Shangguan W, Xie C X, Jiang W. Optimization method for integrated train positioning accuracy based on IMU calibration compensation[J]. Journal of the China Railway Society, 42, 57-64(2020).