Signal, orbit and attitude analysis of Japan's first QZSS satellite Michibiki
Signal, orbit and attitude analysis of Japan's first QZSS satellite Michibiki
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DOI：
10.1007/s10291-011-0245-5
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发表时间：
2012-01-01
期刊：
影响因子：
4.9
通讯作者：
Rodriguez-Solano, Carlos
中科院分区：
文献类型：
--
作者：
Hauschild, Andre;Steigenberger, Peter;Rodriguez-Solano, Carlos
介绍了日本准天顶卫星系统第一颗卫星Michibiki的结果。在QZSS服务区的五个全球导航卫星系统跟踪站收集了用于分析的测量数据，这些跟踪站跟踪卫星发射的六个信号中的五个。该分析讨论了由接收器针对不同信号测量的载波噪声密度比。伪距噪声和多径估计与双频和三频组合。QZSS使用两个单独的天线进行信号传输，从而可以确定航天器的偏航方向。姿态模式切换偏航角估计结果从偏航转向轨道正常定向。在对Michibiki卫星轨道确定结果的分析中给出了QZSS和GPS观测值之间的差分码偏差估计。估计的轨道与广播星历进行比较，其精度评估重叠比较。
Results are presented for Michibiki, the first satellite of Japan's Quasi-Zenith Satellite System. Measurements for the analysis have been collected with five GNSS tracking stations in the service area of QZSS, which track five of the six signals transmitted by the satellite. The analysis discusses the carrier-to-noise density ratio as measured by the receiver for the different signals. Pseudorange noise and multipath are evaluated with dual-frequency and triple-frequency combinations. QZSS uses two separate antennas for signal transmission, which allows the determination of the yaw orientation of the spacecraft. Yaw angle estimation results for an attitude mode switch from yaw-steering to orbit-normal orientation are presented. Estimates of differential code biases between QZSS and GPS observations are shown in the analysis of the orbit determination results for Michibiki. The estimated orbits are compared with the broadcast ephemerides, and their accuracy is assessed with overlap comparisons.