LISA Pathfinder 上 ST7 任务的实验结果
天体物理仪器与方法
2018-11-21 v2
摘要
空间技术 7 扰动抑制系统 (ST7-DRS) 是 NASA 的一项技术验证载荷，于 2016 年 1 月至 2017 年 7 月在欧洲空间局的 LISA Pathfinder 航天器上运行。NASA 与 ESA 任务的联合目标是验证未来基于空间的引力波天文台的关键技术，该天文台瞄准源丰富的毫赫兹波段。ST7-DRS 的两个主要组成部分是基于胶体微牛推力器 (CMNT) 的微推进系统，以及一个同时控制航天器姿态与位置以及两个自由飞行测试质量 (TM) 的控制系统。本文给出我们的主要实验结果并总结 CMNT 与控制律的整体性能。我们发现 CMNT 性能与飞行前预测一致，在 波段测得系统推力噪声量级为 。控制系统将该 TM-航天器间距维持在小于 2nm 的 RMS 误差以及同波段内小于 的噪声谱密度。推力器校准测量给出的推力值与性能模型及地面推力台测量一致，在百分之几以内。我们还报告了两个测试质量间的差分加速度噪声，在 波段谱密度约为 ，略小于 LISA Pathfinder 基线配置所报告最佳性能的两倍，且低于激光干涉空间天线 (LISA) 任务的当前要求。
引用
@article{arxiv.1809.08969,
title = {Experimental results from the ST7 mission on LISA Pathfinder},
author = {G Anderson and J Anderson and M Anderson and G Aveni and D Bame and P Barela and K Blackman and A Carmain and L Chen and M Cherng and S Clark and M Connally and W Connolly and D Conroy and M Cooper and C Cutler and J D'Agostino and N Demmons and E Dorantes and C Dunn and M Duran and E Ehrbar and J Evans and J Fernandez and G Franklin and M Girard and J Gorelik and V Hruby and O Hsu and D Jackson and S Javidnia and D Kern and M Knopp and R Kolasinski and C Kuo and T Le and I Li and O Liepack and A Littlefield and P Maghami and S Malik and L Markley and R Martin and C Marrese-Reading and J Mehta and J Mennela and D Miller and D Nguyen and J O'Donnell and R Parikh and G Plett and T Ramsey and T Randolph and S Rhodes and A Romero-Wolf and T Roy and A Ruiz and H Shaw and J Slutsky and D Spence and J Stocky and J Tallon and I Thorpe and W Tolman and H Umfress and R Valencia and C Valerio and W Warner and J Wellman and P Willis and J Ziemer and J Zwahlen and M Armano and H Audley and J Baird and P Binetruy and a M Born and D Bortoluzzi and E Castelli and A Cavalleri and A Cesarini and A M Cruise and K Danzmann and M de Deus Silva and I Diepholz and G Dixon and R Dolesi and L Ferraioli and V Ferroni and E D Fitzsimons and M Freschi and L Gesa and F Gibert and D Giardini and R Giusteri and C Grimani and J Grzymisch and I Harrison and G Heinzel and M Hewitson and D Hollington and D Hoyland and M Hueller and H Inchauspe and O Jennrich and P Jetzer and N Karnesis and B Kaune and N Korsakova and C J Killow and J A Lobo and I Lloro and L Liu and J P Lopez-Zaragoza and R Maarschalkerweerd and D Mance and N Meshksar and V Martin and L Martin-Polo and J Martino and F Martin-Porqueras and I Mateos and P W McNamara and J Mendes and L Mendes and M Nofrarias and S Paczkowski and M Perreur-Lloyd and A Petiteau and P Pivato and E Plagnol and J Ramos-Castro and J Reiche and D I Robertson and F Rivas and G Russano and C F Sopuerta and T Sumner and D Texier and D Vetrugno and S Vitale and G Wanner and H Ward and P J Wass and W J Weber and L Wissel and A Wittchen and P Zweifel},
journal= {arXiv preprint arXiv:1809.08969},
year = {2018}
}