Abstract
Abstract. The Philippines’s PHL-Microsat program aims to launch its first earth observation satellite, DIWATA, on the first quarter of 2016. DIWATA’s payload consists of a high-precision telescope (HPT), spaceborne multispectral imager (SMI) with liquid crystal tunable filter (LCTF), and a wide field camera (WFC). Once launched, it will provide information about the Philippines, both for disaster and environmental applications. Depending on the need, different remote sensing products will be generated from the microsatellite sensors. This necessitates data processing capability on the ground control segment. Rather than rely on commercial turnkey solutions, the PHL-Microsat team, specifically Project 3:DPAD, opted to design its own ground receiving station data subsystems. This paper describes the design of the data subsystems of the ground receiving station (GRS) for DIWATA. The data subsystems include: data processing subsystem for automatic calibration and georeferencing of raw images as well as the generation of higher level processed data products; data archiving subsystem for storage and backups of both raw and processed data products; and data distribution subsystem for providing a web-based interface and product download facility for the user community. The design covers the conceptual design of the abovementioned subsystems, the free and open source software (FOSS) packages used to implement them, and the challenges encountered in adapting the existing FOSS packages to DIWATA GRS requirements.
Highlights
1.1 Background The Philippines’s PHL-Microsat program aims to launch its first earth observation satellite, DIWATA, on the first quarter of 2016
This paper will focus on Project 3 and the Data Processing, Archiving, and Distribution Subsystem for the ground receiving station of Diwata
Once in the ground receiving station (GRS), the data is pulled by the data processing, archiving, and distribution subsystem into the landing zone, a temporary holding place for raw data file (See Fig. 1)
Summary
1.1 Background The Philippines’s PHL-Microsat program aims to launch its first earth observation satellite, DIWATA, on the first quarter of 2016. Four (projects 3-5) are involved in the data processing chain. Project 2 is in charge of receiving the data from the satellite. Rather than rely on commercial turnkey solutions, the PHLMicrosat program, Project 3: DPAD, opted to design its own ground receiving station data subsystems. They will work but the Philippines will not have learned anything from it. Turnkey solutions do not scale because of the licensing costs. Adding more servers would increase the e cost prohibitive in the future as the project acquires more servers due to the server licensing costs of turnkey solutions. This paper will focus on Project 3 and the Data Processing, Archiving, and Distribution Subsystem for the ground receiving station of Diwata. The system architecture, data processing chain, and the Free and Open Source Software packages used will be discussed
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