1 / 8

Data Storage

Data Storage. Overview. Required amount of data storage Downlink rate Chosen storage medium A word about the receiver memory Summary. Data Storage. Required amount of data storage. The emitter is the only satellite with contact to the Kiruna ground station

keira
Télécharger la présentation

Data Storage

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Data Storage Overview • Required amount of data storage • Downlink rate • Chosen storage medium • A word about the receiver memory • Summary

  2. Data Storage Required amount of data storage • The emitter is the only satellite with contact to the Kiruna ground station • As such it should be possible to store all scientific data on the emitter • First thing to do is to find how much data has to be stored: • What is the longest period without contact to the ground station?

  3. Data Storage Required amount of data storage - continued • The total bit rate of all 5 receiver instruments is • 8.13 Mbit/s • This yields a required storage volume of • 244 Gbit

  4. Data Storage Can the data be sent to earth • Every 13 or more orbits a long period without contact occurs. • During these orbit additional data is generated. • The resulting downlink rate is 111 Mbit/s • The available rate is 150 Mbit/s

  5. Data Storage Storage medium • 64 Gbit flash nand memory module • Weighs 6.10 grams • 20.40 mm x 13.84 mm x 12.13 mm • Uses ~ 1 Watt of power • Space qualified • 98% survival chance after 5 years

  6. Data Storage Storage medium - continued • 244 Gbit / 64 Gbit => 4 modules • Extra module added for redundancy • In total: • ~ 5 Watt of power • 30.5 grams • At least 102 x 69.2 x 60.7 mm

  7. Data Storage Receiver satellite memory • All science data is to be stored on the emitter • Memory is still required for housekeeping data • and scientific data in an emergency • Each receiver satellite has a 64 Gbit flash nand memory • (Can allow it to store of up to 7 hours of data)

  8. Data Storage Summary • The emitter has 5 x 64 Gbit modules 320 Gbit available, where 244 Gbit is necessary • A receiver has 1 x 64 Gbit module • Communications and data storage combined:

More Related