{"title":"ASTROD I: Mission Concept and Venus Flybys","authors":"Guangyu Li, W. Ni, C. Tang","doi":"10.1017/S1539299600017603","DOIUrl":null,"url":null,"abstract":"ASTROD I is the first step of ASTROD (Astrodynamical Space Test of Relativity using Optical Devices). This mission concept has one spacecraft carrying a payload of a telescope, five lasers, and a clock together with ground stations (ODSN: Optical Deep Space Network) to test the optical scheme of interferometric and pulse ranging and yet give important scientific results. These scientific results include a better measurement of the relativistic parameters, a better sensitivity in using optical Doppler tracking method for detecting gravitational waves, and measurement of many solar system parameters more precisely. The weight of this spacecraft is estimated to be about 300-350 kg with a payload of about 100-120 kg. The spacecraft is to be launched with initial period about 290 days and to pass by Venus twice to receive gravity-assistance for achieving shorter periods. For a launch on August 4, 2010, after two encounters with Venus, the orbital period can be shortened to 165 days. After about 370 days from launch, the spacecraft will arrive at the other side of the Sun for the determination of relativistic parameters.","PeriodicalId":422890,"journal":{"name":"Highlights of Astronomy","volume":"3 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"35","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Highlights of Astronomy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1017/S1539299600017603","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 35
Abstract
ASTROD I is the first step of ASTROD (Astrodynamical Space Test of Relativity using Optical Devices). This mission concept has one spacecraft carrying a payload of a telescope, five lasers, and a clock together with ground stations (ODSN: Optical Deep Space Network) to test the optical scheme of interferometric and pulse ranging and yet give important scientific results. These scientific results include a better measurement of the relativistic parameters, a better sensitivity in using optical Doppler tracking method for detecting gravitational waves, and measurement of many solar system parameters more precisely. The weight of this spacecraft is estimated to be about 300-350 kg with a payload of about 100-120 kg. The spacecraft is to be launched with initial period about 290 days and to pass by Venus twice to receive gravity-assistance for achieving shorter periods. For a launch on August 4, 2010, after two encounters with Venus, the orbital period can be shortened to 165 days. After about 370 days from launch, the spacecraft will arrive at the other side of the Sun for the determination of relativistic parameters.
ASTROD I是ASTROD (astrodynamic Space Test of Relativity with Optical Devices)的第一步。这个任务概念有一个航天器携带一个望远镜、五个激光器和一个时钟以及地面站(ODSN:光深空网络)来测试干涉测量和脉冲测距的光学方案,并给出重要的科学结果。这些科学成果包括更好地测量相对论参数,使用光学多普勒跟踪方法探测引力波的灵敏度更高,以及更精确地测量许多太阳系参数。该航天器的重量估计约为300-350公斤,有效载荷约为100-120公斤。该航天器的初始发射周期约为290天,并将经过金星两次,以获得重力帮助,以实现更短的周期。如果在2010年8月4日发射,在两次与金星相遇后,轨道周期可以缩短到165天。在发射大约370天后,宇宙飞船将到达太阳的另一侧,以确定相对论参数。