高精度千赫兹流动激光测距系统中国西部地区实测结果分析

为了解决人造卫星激光测距观测站在我国东西部地区分布不均衡的现状,中国地震局地震研究所采用方便运输的载车结构和皮秒级千赫兹半导体激光器,结合自行研制的皮秒级事件计数器和纳秒级距离门,研制了新一代的大口径流动卫星激光测距系统TROS1000.TROS1000具备千赫兹流动激光测距的能力,并且具有机动灵活、架设周期短等特点.2019年9月,TROS1000抵达中国科学院新疆天文台南山观测站,在我国西部地区首次获取千赫兹激光观测数据.经过数据预处理,中低轨卫星的单次精度优于14 mm,高轨卫星的单次精度优于19 mm,与上一代流动激光测距系统相比,其单次精度更高,有效回波信号更多,目标探测能力更强.

kHz Repetition Rate Mobile Laser Ranging System with High Precision and Measuring Results Analysis in Western China

Institute of Seismology,China Earthquake Administration has developed a new generation of large-aperture mobile satellite laser ranging system TROS1000,which uses a convenient transport structure,a picosecond kHz semiconductor laser,a self-developed picosecond event timer and a nanosecond range gate generator,in order to solve the unbalanced distribution of satellite laser ranging stations in the East and West of China.TROS1000 is the kilohertz satellite laser ranging system,it can be transport conveniently and setup quickly.In september 2019,TROS1000 arrived at Nanshan station of Xinjiang Astronomical Observatory,Chinese Academy of Sciences.TROS1000 acquire kHz satellite laser ranging observation data in Western China for the first time.After data preprocessing,the single accuracy of low earth orbit and medium earth orbit satellites are better than 14 mm,that of high earth orbit satellites are better than 19 mm.Compared with the previous mobile satellite laser ranging system,TROS1000 has higher single accuracy,more valid echo signals and stronger target detection capability.