Evaluation of differential VLBI phase delay observable for spacecraft navigation - ΔVLBI observation of Hayabusa at touchdown to ITOKAWA -
Evaluation of differential VLBI phase delay observable for spacecraft navigation - ΔVLBI observation of Hayabusa at touchdown to ITOKAWA -
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航天器导航可观测差分 VLBI 相位延迟的评估 - 隼鸟号着陆至伊藤川时的 ΔVLBI 观测 -
DOI：
10.1109/sice.2007.4421510
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
T. Ichikawa
中科院分区：
文献类型：
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作者：
M. Sekido;R. Ichikawa;M. Yoshikawa;H. Takeuchi;T. Kato;N. Mochizuki;Y. Murata;T. Ichikawa
本报告描述了航天器导航的 Δ VLBI 延迟测量精度的评估。在隼鸟号着陆系川小行星的时期，我们利用日本国内的VLBI站对隼鸟号进行了ΔVLBI观测。由于糸川星的轨道是准确已知的，我们可以利用这个机会通过ΔVLBI来评估延迟校准的精度。通过使用利用多个参考源的群延迟对额外延迟进行建模的校准技术，可以获得数百皮秒量级的校准精度。通过使用双波段观测作为参考源，预计会有进一步的改进。作为另一种方法，参考无线电源的相位延迟数据被用于校准，期望提高精度和时间分辨率，尽管在这种情况下没有显示出校准的显着改进。
This report describes the evaluation of Δ VLBI delay measurement accuracy for Spacecraft Navigation. At the epochs of Hayabusa's touchdown to asteroid Itokawa, we made Δ VLBI observation for Hayabusa with Japanese domestic VLBI stations. Since the orbit of Itokawa is accurately known, we could use this occasion for evaluation of the delay calibration accuracy by Δ VLBI. By using a calibration technique of modeling the excess delay with group delays of multiple reference sources, calibration accuracy in the order of several hundreds pico seconds are obtained. Further improvements are expected by using dual-band observation for reference sources. As another approach, phase delay data of reference radio sources were applied for calibration with expecting improved precision and temporal resolution, though it did not show significant improvement for calibration in this case.
甚长基线干涉测量航天器天体测量——VLBI应用于航天器导航的一个步骤
DOI：
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发表时间：
2004
期刊：
URSI Commission-F Triennium Open Symposium proceedings
影响因子：
--
作者：
加藤 隆二;関戸 衛;竹内 央;Mamoru Sekido;Mamoru Sekido;関戸 衛;Mamoru Sekido;Makoto Yoshikawa;Mamoru Sekido;Mamoru Sekido;吉川 真;Takaji Kato;Makoto Yoshikawa;Takaji Kato;Makoto Yoshikawa;Mamoru Sekido;Mamoru Sekido
通讯作者：
Mamoru Sekido