干涉测量数据格式不兼容限制了不同机构间的交互支持能力,难以充分发挥甚长基线干涉测量(very long baseline interferometry,VLBI)的技术潜能。基于RDEF(raw data exchange format)标准研究了干涉测量数据格式的实现方法,给出了数据编...干涉测量数据格式不兼容限制了不同机构间的交互支持能力,难以充分发挥甚长基线干涉测量(very long baseline interferometry,VLBI)的技术潜能。基于RDEF(raw data exchange format)标准研究了干涉测量数据格式的实现方法,给出了数据编帧和数据传输2个关键模块的实现方案。实验结果表明,该方法能够实现干涉测量数据的实时编帧和存储,格式符合RDEF标准。该方法已应用于我国新建深空站中的干涉测量数字终端系统中,提高了我国新建深空站参与国际合作的能力。展开更多
The deep-space multi-object orbit determination system(DMOODS)and its application in the asteroid proximity operation of the Hayabusa2 mission are described.DMOODS was developed by the Japan Aerospace Exploration Agen...The deep-space multi-object orbit determination system(DMOODS)and its application in the asteroid proximity operation of the Hayabusa2 mission are described.DMOODS was developed by the Japan Aerospace Exploration Agency(JAXA)for the primary purpose of determining the trajectory of deep-space spacecraft for JAXA’s planetary missions.The weighted least-squares batch filter is used for the orbit estimator of DMOODS.The orbit estimator supports more than 10 data types,some of which are used for relative trajectory measurements between multiple space objects including natural satellites and small bodies.This system consists of a set of computer programs running on Linux-based consumer PCs on the ground,which are used for orbit determination and the generation of radiometric tracking data,such as delta differential one-way ranging and doppler tracking data.During the asteroid proximity phase of Hayabusa2,this system played an essential role in operations that had very strict navigation requirements or operations in which few optical data were obtained owing to special constraints on the spacecraft attitude or distance from the asteroid.One example is orbit determination during the solar conjunction phase,in which the navigation accuracy is degraded by the effect of the solar corona.The large range bias caused by the solar corona was accurately estimated with DMOODS by combining light detection and ranging(LIDAR)and ranging measurements in the superior solar conjunction phase of Hayabusa2.For the orbiting operations of target markers and the MINERVA-II2 rover,the simultaneous estimation of six trajectories of four artificial objects and a natural object was made by DMOODS.This type of simultaneous orbit determination of multi-artificial objects in deep-space has never been accomplished before.展开更多
文摘干涉测量数据格式不兼容限制了不同机构间的交互支持能力,难以充分发挥甚长基线干涉测量(very long baseline interferometry,VLBI)的技术潜能。基于RDEF(raw data exchange format)标准研究了干涉测量数据格式的实现方法,给出了数据编帧和数据传输2个关键模块的实现方案。实验结果表明,该方法能够实现干涉测量数据的实时编帧和存储,格式符合RDEF标准。该方法已应用于我国新建深空站中的干涉测量数字终端系统中,提高了我国新建深空站参与国际合作的能力。
文摘The deep-space multi-object orbit determination system(DMOODS)and its application in the asteroid proximity operation of the Hayabusa2 mission are described.DMOODS was developed by the Japan Aerospace Exploration Agency(JAXA)for the primary purpose of determining the trajectory of deep-space spacecraft for JAXA’s planetary missions.The weighted least-squares batch filter is used for the orbit estimator of DMOODS.The orbit estimator supports more than 10 data types,some of which are used for relative trajectory measurements between multiple space objects including natural satellites and small bodies.This system consists of a set of computer programs running on Linux-based consumer PCs on the ground,which are used for orbit determination and the generation of radiometric tracking data,such as delta differential one-way ranging and doppler tracking data.During the asteroid proximity phase of Hayabusa2,this system played an essential role in operations that had very strict navigation requirements or operations in which few optical data were obtained owing to special constraints on the spacecraft attitude or distance from the asteroid.One example is orbit determination during the solar conjunction phase,in which the navigation accuracy is degraded by the effect of the solar corona.The large range bias caused by the solar corona was accurately estimated with DMOODS by combining light detection and ranging(LIDAR)and ranging measurements in the superior solar conjunction phase of Hayabusa2.For the orbiting operations of target markers and the MINERVA-II2 rover,the simultaneous estimation of six trajectories of four artificial objects and a natural object was made by DMOODS.This type of simultaneous orbit determination of multi-artificial objects in deep-space has never been accomplished before.
