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IDHU (Image Data Handling Unit)
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AP SATELLITE

Satellite & Satellite Communication Device Manufacturer, Satellite Smartphone, Satellite Bus System Design and more

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AP SATELLITE
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SKU
53715
Product Name
IDHU (Image Data Handling Unit)
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Product Details

(1) Overview

The SSR(Solid State Recorder) has been used as a storage unit for LEO (Low Earth Orbiting) Earth Observation Satellites with EO(Electro Optic)/IR(Infra Red) sensors or SAR(Synthetic Aperture Radar) sensors.

The SSR has functions of real-time image data recording, storage, data compression, playback and real-time channel coding. The SSR receives real-time high speed image data streams from payload sensors. The image data acquired from PAN/MS/IR sensors is stored to mass memory and compressed and packetized into CCSDS format. Also the SSR performs a data encryption to prevent unauthorized party from access down-link data. The SSR also has interfaces with an on-board computer, modulators and BUS power.

AP Satellite IDHU (Image Data Handling Unit)

 

Since 2005, AP Satellite Inc. has been developing SSRs for satellite projects. Today AP Satellite Inc. is a world leading and fast growing for customizing SSR.

 

- Localized an image data handling unit which is a core component of earth observation satellites, while undertaking the KOMPSAT-3 and KOMPSAT-3A projects.

- Ongoing development of DSHA (Data Storage Handling Assembly) for KOMPSAT-6 Data Link Subsystem.

- Ongoing development of IDHU(Instrument Data Handing Unit) for KOMPSAT-7 Data Link Subsystem.

- Ongoing development of IAU(Integrated Avionics Unit) for KPLO(Korea Pathfinder Lunar Orbiter).

- Ongoing world top class SSR projects which has massive memory for very high speed input image data

 

AP Satellite IDHU (Image Data Handling Unit)  1

 

(2) TYPICAL SPECIFICATIONS

The SSR could be consisted by memory type (NAND flash or SDRAM), input/output data speed, compression. APSI has 2 kinds of SSR as followings;

 

[SSR Based on NAND Flash Memory]

NAND flash memory has been applying for recent SSRs and earth observation with very high resolution image data. This type of SSR has minimum 2Tbit memory for incoming image data. Nevertheless, this kind of SSR has dramatic beneficial features in dimension, mass, power consumption.

Item Specification
Input data interface Wizard-link (2Gbps per channel) or
Channel-link (1.2Gbps per channel)
Output data interface Serial LVDS (600Mbps per channel) or
Wizard-link (1.2Gbps per channel)
Compression standard CCSDS 122-B-1 (DWT/BPE)
Memory capacity ≥ 2Tbits (customizing up to 14Tbit)
Encryption AES or T-DES
Data output format CCSDS Transfer frame
TC/TM interface MIL-STD-1553B, Hard-wired
Power consumption ≤ 200W (peak)
Weight ≤ 30Kg
Size 706mm(L) x 334mm(W) x 250mm(H)
Operation Temperature Operating: -20℃ to +50℃
Non-operating: -35℃ to +60℃
Mission Life Up to 5 years on LEO orbit

 

[SSR Based on SDRAM Memory]

SDRAM memory has been used for typical classic SSRs. Because this kind of SSR has been used for most satellites, it is sufficient heritage and stability for space applications. This kind of SSR is recommended to use for image data with up to 1Tbit

Item Specification
Input data interface Channel-link (1.2Gbps per channel) or
Wizard-link (2Gbps per channel)
Output data interface Serial LVDS (600Mbps per channel) or
Wizard-link (1.2Gbps per channel)
Compression standard CCSDS 122-B-1 (DWT/BPE)
Memory capacity 1Tbits (256Gbits x 5 modules)
512Gbits (128Gbits x 5 modules)
Encryption T-DES or AES
Data output format CCSDS Transfer frame
TC/TM interface MIL-STD-1553B, Hard-wired
Power consumption ≤ 250W (peak)
Weight ≤ 35.0Kg
Size 652mm(L) x 334mm(W) x 250mm(H) or
652mm(L) x 334mm(W) x 201mm(H)
Operation Temperature Operating: -20℃ to +50℃
Non-operating: -35℃ to +60℃
Mission Life Up to 5 years on LEO orbit

AP SATELLITE
Satellite & Satellite Communication Device Manufacturer, Satellite Smartphone, Satellite Bus System Design and more
AP Satellite a leader in the satellite industry Moving towards global leadership. Since our incorporation as Asia Pacific Satellite, we have undertaken a number of satellite projects in the markets worldwide and made substantial contributions to the development of the satellite industry. At AP Satellite, we have successfully carried out the second-generation satellite mobile project for Thuraya in UAE, and developed ultra-small backup satellite communication modules for terrestrial mobile phones, MSS(Mobile Satellite Service)-based applications, next-generation high speed data modems, and satellite/Tetra mobile devices optimized for disaster control, strengthening our leadership position in the global satellite communication device market. Now, we are taking our business to the next level by merging with Asia Pacific Aerospace Inc ., which has led the development of the main satellite unit for the multipurpose satellite 3A and has full technological expertise in payload systems for observation satellites. We have further expanded our business areas while undertaking the nation's aerospace development projects, including lunar exploration, development of the main satellite unit, and localization of satellite payload systems and EGSE for satellite testing. We also developed a next-generation aerospace monitoring system and unmanned aircraft communication system to build our expertise in the field and gain a competitive advantage in the global market. The aerospace industry represents our national power and technological expertise. At AP Satellite, we will continue to localize advanced technologies and work toward technological innovation while contributing to the development of the aerospace industry so it can become a leading industry in our country along with electronics, automobiles and shipbuilding.  With this goal in mind, we will continue to innovate and evolve based on our experience and the knowhow we have gained over the years to grow into a global leader in the satellite industry in the near future.
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