R&D

CAS500 FPA (1) : FPA

CAS500 is a 500kg-weight its scale is in the middle of Application Satellite(e.g. Arirang-satellite) and Nanosat(e.g. scientific satellite), but its spatial resolution is 0.5m level which can provide observation image as precise as Application Satellite. Pushbroom scanning is the way how CAS500’s optical payload can achieve an image by skimming the crust with its optical camera. Developing precise optical structure, system operating manipulation, and also corresponding crust scanning pace with Line-rate is required to maintain MTF performance and achieve high-end image. Line-rate is a pixel shooting pace on a single column of linear CCD imaging detector.

FPA(Focal Plane Assembly) is the heart of optical payload which composed of (1) CCD, (2) Electronic board for CCD control, imaging, process and interface, (3) Housing which stabilized structurally and thermally, and (4) Heat pipe for ventilation. i3system already achieved all kinds of space level technology including CCD control, low-noise imaging, fast imaging process and its interface, structural design for heat, and delivered fine CAS500 FPA to consumers.

CAS500 FPA (2) : Block Diagram

-Supply power from Spacecraft Bus(SC BUS) through CEU Power Supplier(CEUP) and input Reference Synchronizing Signal(PPS) and Remote Control Signal(TC) through Camera Controller Box(CCB).

-Transmit Remote Measurement Signal(TM) through Camera Controller Box(CCB).

-Transmit achieved image to Payload Data Transmission Subsystem(PDTS) through Channel Link.

CAS500 FPA (3) : Specifications

LUTI CEM (2)

LUTI CEM (3) : Block Diagram

-Receive power from SBMU then received TC and PPS through LVDS

-Transmit TM to satellite through LVDS

-Transmit achieved image to PDHI through Channel Link

LUTI CEM (4) : Achieved sample image in lab