Algorithm Enhancement of STELLAR on LAPAN-A4 Satellite

5th International Symposium on LAPAN-IPB Satellite for Food Security and Environmental Monitoring 2018

生态环境科学

Saifudin, Muhammad Arif^1

Satellite Technology Center, LAPAN, Indonesia^1

关键词: CCD sensors;    Hot pixels;    Hotspots;    In orbit tests;    Reliable results;    Star identification;    Star sensors;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/284/1/012044/pdf
DOI  :  10.1088/1755-1315/284/1/012044

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The first LAPAN's experimental star sensor has onboard on LAPAN-A3/LAPAN-IPB microsatellite that successfully launch on June, 6 2016. The second LAPAN's experimental star sensor called STELLAR has scheduled to be onboard on LAPAN-A4 satellite. In orbit test of first star sensor provide conclusions. One of the conclusion is the radiation in space has an impact on star sensor performance. Many hot pixels or hotspots appear on CCD sensor temporarily that it causes a failure of star identification since the hotspots are fake stars. In order to solve this problem, an enhancement of algorithm is conducted. The enhancement aims to ignore the fake stars to proceed as stars candidate. This method selects a cloud pixel as star candidate and proceed only clouds pixel. The algorithm was tested and give more reliable result of star identification.