The Design of Focal Plane Assembly for AEISS
- Paper number
IAC-09.B1.I.6
- Author
Mr. Jong-Pil Kong, Korea Aerospace Research Institute, Korea, Republic of
- Coauthor
Dr. Andreas Eckardt, DLR OS, Germany
- Coauthor
Prof. Bo-Gwan Kim, Chungnam National University, Korea, Republic of
- Year
2009
- Abstract
As a main component of high resolution electro-optical payload system AEISS(Advanced Earth Imaging Sensor System), FPA(Focal Plane Assembly) receives light energy from optical module, transforms it into electrical signal and sends it as digital data stream after noise-reduction signal processing to PDTS(Payload Data Transmission Sub-system). This paper describes the design of it. It comprises 2 panchromatic and 4 multi-spectral imaging bands in which TDI CCD modules are customized to support wider imaging swath by staggering two CCDs. It features a complete independent design not only between each imaging band but also between each CCD even in the same imaging band by separating respective electrical control and interface for preventing the propagation of probable failures. It also features 4 kinds of binning characteristics in the multi-spectral bands, which enables various operational options depending on the mission purpose to be executed. The designed FPA is able to be operated without sending any configuration command because latching relays for the configuration keep the valid working configuration, which makes the FPA a simple instrument being operated by providing just primary power from the satellite BUS. In terms of data processing, it provides functionality of dynamic on-board offset correction using temperature data as well as absolute gain/offset correction using dedicated device, by which the FPA is able to operate under the condition free of temperature-dependant offset. The FPA uses Flash-memories for the DSNU/PRNU parameter tables directly accessed by DSNU/PRNU correction processes, which gives another advantage to reduce imaging preparation time especially required for loading DSNU/PRNU parameters into the FPA RAM. These tables can be modified by commands in order to accommodate aging effects of the FPA.
- Abstract document
- Manuscript document
IAC-09.B1.I.6.pdf (🔒 authorized access only).
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