According to the train space-time positioning and three-dimensional multi-dimensional communication, occupancy inspection and system synchronization method, navigation enhancement information is transmitted by utilizing a low-orbit satellite constellation communication navigation time service function or a transmission channel of a mobile communication network to improve the positioning precision and shorten the initial positioning time, or/and the positioning satellite function of a low-orbit satellite is utilized to improve the positioning accuracy and shorten the initial positioning time. The navigation signal intensity is enhanced, or a GNSS system, a ground base station and a mobile communication base station are assisted for combined positioning, the positioning precision and usability are improved, meanwhile, redundant and complementary positioning can be achieved by adopting speed measurement positioning methods such as inertial navigation and wheel shaft speed measurement, and the positioning accuracy and usability can be improved by laying beacons such as transponders along the track. On one hand, train positioning is achieved under weak navigation signals such as a tunnel, on the other hand, track occupation inspection and train integrity judgment are achieved, and train head and/or train tail signal equipment reads the number and information of a transponder to obtain the train position and the integrity state; train states such as train position, train integrity and the like are transmitted through mobile communication technologies such as low-orbit satellite constellation or GSM-R (Global System for Mobile Communications for Railway) or wireless communication such as WLAN (Wireless Local Area Network) and the like (train-ground communication, train-train communication and communication between train head equipment and train tail equipment are constructed by various communication technologies), and the train position and speed are acquired on the ground; therefore, track occupancy inspection and train integrity inspection are achieved, the types and the number of trackside equipment are reduced, meanwhile, system clock synchronization is achieved through time service of a low-orbit satellite constellation, and the transportation efficiency is improved.
本发明列车时空定位和立体多维通信、占用检查和系统同步方法,利用低轨道卫星星座通信导航授时功能或移动通信网络的传输通道传递导航增强信息提高定位的精度和缩短初始定位时间,或/和利用低轨道卫星的定位卫星功能,增强导航信号强度,或辅以GNSS系统、地面基准站、移动通信基站联合定位,提高定位精度和可用性,同时可采用采用惯性导航和轮轴测速等测速定位方法实现冗余和互补定位,可通过轨道沿线铺设信标如应答器等,一方面在隧道等弱导航信号下解决列车定位,另一方面实现轨道占用检查和列车完整性判断,列首和/或列尾信号设备读取应答器编号和信息获取列车位置和完整性状态,通过低轨道卫星星座、或GSM‑R等移动通信技术、或无线通信如WLAN等建立的立体多维通信(多种通信技术构建车地通信、车‑车通信、列车首尾设备间通信)传递列车位置和列车完整性等列车状态,地面获取列车位置和速度,从而实现轨道占用检查和列车完整性检查,降低轨旁设备种类和数量,同时利用低轨卫星星座的授时实现系统时钟同步,提高运输效率。
Train space-time positioning and three-dimensional multi-dimensional communication, occupancy inspection and system synchronization method
列车时空定位和立体多维通信、占用检查和系统同步方法
2023-04-18
Patent
Electronic Resource
Chinese
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
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