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首页> 外文会议>AAS/AIAA Space Flight Mechanics Meeting; 20040208-12; Maui,HI(US) >6-DOF AEROBRAKING TRAJECTORY RECONSTRUCTION BY USE OF INERTIAL MEASUREMENT UNIT (IMU) DATA FOR THE IMPROVEMENT OF AEROBRAKING NAVIGATION
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6-DOF AEROBRAKING TRAJECTORY RECONSTRUCTION BY USE OF INERTIAL MEASUREMENT UNIT (IMU) DATA FOR THE IMPROVEMENT OF AEROBRAKING NAVIGATION

机译：通过使用惯性测量单元（IMU）数据来改进航空制动导航的6自由度航空制动弹道重建

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摘要

For any interplanetary mission, there are certain types of data that are used as a means of determining both the position and velocity of a spacecraft. NASA's Deep Space Network (DSN) is employed for the purpose of transmitting and receiving data to and from the spacecraft, respectively. For this exchange of information to take place, both the DSN and spacecraft antennae must be pointed towards each other. This mutual geometry is not maintained throughout aerobraking, specifically while the spacecraft is within the atmosphere. Some spacecraft are equipped with an Inertial Measurement Unit (IMU), which typically is comprised of gyroscopes and accelerometers. The IMU provides information about the spacecraft's non-conservative acceleration and angular motion. Since the spacecraft loses telemetry during the drag pass, this research focuses upon the possibility of using IMU data as a means of augmenting the current state knowledge of the spacecraft. This knowledge could also assist in obtaining best estimates for subsequent periapse times and altitudes (integral aspect of aerobraking operations). This research focuses upon the use of the IMU data (collected during the radiometric data gap) as a means of augmenting aerobraking navigation capabilities.
机译：对于任何行星际飞行任务，都有某些类型的数据可用作确定航天器位置和速度的手段。 NASA的深空网络（DSN）用于分别向航天器发送数据和从航天器接收数据。为了进行这种信息交换，DSN和航天器天线必须彼此指向对方。在整个航空制动过程中，尤其是在航天器处于大气中时，不会保持这种相互的几何形状。一些航天器配备了惯性测量单元（IMU），该单元通常由陀螺仪和加速度计组成。 IMU提供有关航天器非保守加速度和角运动的信息。由于航天器在通过过程中失去遥测，因此本研究着重于使用IMU数据作为增加航天器当前状态知识的手段的可能性。这些知识还可以帮助获得有关随后的近视时间和海拔高度的最佳估计（气动制动操作的整体方面）。这项研究的重点是使用IMU数据（在辐射数据间隙期间收集的数据）作为增强航空制动导航功能的一种手段。

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