PARKER SOLAR PROBE Attitude and Ephemeris Data (CDF)

This data sets contains spacecraft attitude (roll and offpointing from SPICE kernels), distance from Sun in AU and RTN coordinates. The RTN frame is defined as follows : R axis points from the Sun to the spacecraft. T = Omega x R, where Omega is the Sun's rotation axis. N = R x T. The XYZ or spacecraft frame (also referred to as SC) is defined as follows for Parker Solar Probe : Z axis corresponds to the satellite axis (and its arm) and points towards the Sun. When PSP is facing the Sun, Z = -R. X is normally included in the ecliptic plane, with X = Z x Omega, when PSP is facing the Sun. Y is normally perpendicular to the ecliptic plane, pointing towards the South. PSP's solar panels are oriented along the Y axis. The data file with position is in CDF format. Records are arranged chronologically, with 1 min time resolution. One record contains : Epoch (Y-m-d H:M:S.000000000 format), cos_roll, cos_offpointing, rad_AU (AU), R value (m), T value (m), N value (m) with : Epoch : Time of the record in TT2000 format, exactly in the kernels. This time corresponds to nanoseconds since 1 Jan 2000 12:00:00 with leap seconds included. cos_roll : Cosine of roll angle, i.e. angle between X and T axis (from (XYZ) and (RTN) frames). This angle mainly varies during satellite roll operations, which are carried out several times per orbit to calibrate the MAG fluxgates. cos_offpointing : Cosine of offpointing angle, i.e. angle between Z and R axis. This angle is important for determining when the instruments on the boom are sunlit. Off-pointing primarily occurs when the spacecraft is away from the Sun. rad_AU : Parker Solar Probe-Sun distance in AU. R, T and N values (in m) of Parker Solar Probe in (RTN) frame. Attitude data, PSP-Sun distance and PSP ephemeris are computed from SPICE kernels (see the CDAWEB Data Center https://cdaweb.gsfc.nasa.gov/pub/data/psp/ephemeris/spice/).

搜集汇总

背景与挑战

背景概述

该数据集提供帕克太阳探测器的姿态和星历数据，包含航天器滚转角、偏离角、与太阳的距离以及RTN坐标系中的位置信息，以CDF格式存储，时间分辨率为1分钟，覆盖2018年至2021年的观测期间。数据主要用于分析探测器在太阳系内部和日冕区域的运动轨迹和姿态变化，支持科学研究和仪器校准。