Mr. Tri Meidiansyah Profile

Tri Meidiansyah

at Indonesian National Institute of Aeronautics and Space

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Proceedings Article | 24 December 2019 Paper

A method for evaluating LAPAN-A3 operation based on raw data telemetry

Wakhid Abdurrokhman, Satriya Utama, Tri Meidiansyah

Proceedings Volume 11372, 1137220 (2019) https://doi.org/10.1117/12.2542785

KEYWORDS: Satellites, Star sensors, Satellite imaging, Image quality, Digital cameras, Data processing, Remote sensing, Cameras, Data centers, Space operations

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LAPAN-A3/IPB operated in Nadir Pointing Mode as normal mode. Maneuvers are carried out to maintain attitude at nadir or to change satellite’s attitude to aim at the target in Target Pointing Mode. The attitude of the satellite when carry out the mission must be as close as possible to the target’s attitude parameter in order to get accurate and good quality satellite image. When the attitude of the satellite is not the same as the target, a difference will be created and this should be evaluated regularly. Historical data on satellite attitude differences and other satellite operating parameters are stored in a telemetry logfile data. There are two types of logfiles, logfile-client and logfile-server. So far, logfile-client is used to evaluate satellite operations, but the logfiles are vulnerable to formatting changes, so more reliable logfile is needed, the logfile-server is suitable because there are no changes in formatting. Logfile- servers are raw data telemetry that are issued directly from satellites without any data processing, so processing data directly from the logfile-server will produce more reliable results. This paper will discuss a method for evaluating satellite operations by processing raw data telemetry from the logfile-server. Using the method, based on March- August 2019 telemetry data, the attitude performance of LAPAN-A3/IPB satellite show positive trend. Yaw, pitch, and roll value, as attitude parameter, the majority are in the range of 0° until 1°.

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