Q-SAT for atmosphere and gravity field detection: Design, mission and preliminary results
Q-SAT for atmosphere and gravity field detection: Design, mission and preliminary results
复制标题
用于大气和重力场探测的 Q-SAT：设计、任务和初步结果
DOI：
10.1016/j.actaastro.2022.06.035
复制
发表时间：
2022-07-09
影响因子：
3.5
通讯作者：
Zhang Yulin
中科院分区：
文献类型：
--
作者：
Wang Zhaokui;Han Dapeng;Zhang Yulin
清华一号（Q - SAT）是由清华大学设计研发的一颗小型球形卫星，于2020年8月6日在中国酒泉卫星发射中心成功发射。清华一号的任务是联合测量长波地球重力场和高层大气密度，这对改进航天器轨道预测以及推动卫星重力测量技术的发展具有重要意义。该卫星创新性地设计为球形，并搭载高动态双频全球定位系统（GPS）作为主要有效载荷。在轨数据显示，大气密度探测精度达到10⁻¹⁴千克/立方米量级，重力恢复精度达到30阶水平。所有任务成功标准和目标均已达成。本文介绍了该卫星的设计、航天任务、关键技术、科学能力以及初步结果。
Q-SAT, a small spherical satellite designed and developed by Tsinghua university, was successfully launched on Aug 6, 2020 at Jiuquan satellite launch center in China. The mission of Q-Sat is the joint measurement of long-wavelength Earth gravity field and upper atmosphere density, which is of great significance for improving spacecraft orbit prediction and promoting the development of satellite gravity measurement technology. The satellite is designed in spherical shape innovatively and deploys high dynamic dual-frequency GPS as the main payload. On-orbit data shows that the atmospheric density detection precision is in the order of 10(-14) kg/m(3) and the gravity recovery precision achieves the level of 30 orders. All mission success criteria and objectives were achieved. This paper presents the design, space mission, key technologies, science capabilities and preliminary results of the satellite.