The main idea of autonomous navigation based on velocity measurement is to detect the on-sight speed of the star in the space when the satellite sees it using the spectrograph. The Sun is one of the most important observation targets in space. In this paper, we analyze the data of the space-born spectrograph to observe the Sun at five different positions. Each data set has a period of about one hour. Using the Gaussian profile fitting, we can get the intensity, width and speed. The mean speed is about 10 km/s with a standard deviation of 3 km/s, which is caused by the small scale activities on the solar surface.
NING Zongjun, LI Dong, DAI Yu
. Study for Celestial Speed Detection of Integrated Navigation in Deep Space Explorations[J]. Journal of Deep Space Exploration, 2016
, 3(3)
: 225
-227,245
.
DOI: 10.15982/j.issn.2095-7777.2016.03.005
[1] De Pontieu B,Title A M,Lemen J R,et al. The interface region imaging spectrograph(IRIS)[J]. Solar Physics,2014,289:2733-2779.
[2] Li D,Ning Z J,Zhang Q M.Imaging and spectral observations of quasi-periodic pulsations in a solar flare[J]. The Astrophysics Journal,2015:807,72-84.
[3] Li T,Zhang J. Quasi-periodic slipping magnetic reconnection during an X-class solar flare observed by the solar dynamics observatory and interface region imaging spectrograph[J]. The Astrophysics Journal Letter,2015,804:8-15.
[4] Lemen J R,Title A M,Akin D J,et al. The Atmospheric Imaging Assembly(AIA)on the Solar Dynamics Observatory(SDO)[J]. Solar Physics,2012,275,17-32.
[5] Ning Z,Innes D E,Solanki S K. Line profile characteristics of solar explosive event burstsp[J]. Astronomy and Astrophysics,2004,419:1141-1148.
[6] Jongchul C,Wang H M,Goode P R,et al. Comparison of transient network brightenings and explosive events in the solar transition region[J]. The Astrophysical Journal,2000,528:119-122.
