Presented by Alexandru Csete FOSDEM 2019 About me... Development - - PowerPoint PPT Presentation

▶
presented by alexandru csete fosdem 2019 about me
SMART_READER_LITE
LIVE PREVIEW

Presented by Alexandru Csete FOSDEM 2019 About me... Development - - PowerPoint PPT Presentation

Oct 13, 2023 378 likes •626 views

Presented by Alexandru Csete FOSDEM 2019 About me... Development engineer at Cobham Satcom - First contact with open-source in 1995 - Hamradio (OZ9AEC) since 1991 - Playing with SDR since 2007 - Space geek since forever - Libre Space

slide-1
SLIDE 1

Presented by Alexandru Csete FOSDEM 2019

slide-2
SLIDE 2

Development engineer at Cobham Satcom

  • First contact with open-source in 1995
  • Hamradio (OZ9AEC) since 1991
  • Playing with SDR since 2007
  • Space geek since forever
  • Libre Space since 2016
  • @csete on Twitter

About me...

slide-3
SLIDE 3

Claim Space, the Libre Way

Free and Accessible Space for all Creating Open Source space technologies

slide-4
SLIDE 4

First open-source cubesat

  • Launched in 2017
  • Part of the QB50 project
  • Libre Space Foundation
  • University of Patras

UPSat

https://gitlab.com/librespacefoundation/upsat

slide-5
SLIDE 5
slide-6
SLIDE 6
slide-7
SLIDE 7

Open Source Cubesat Workshop

slide-8
SLIDE 8

Open Source Cubesat Workshop

slide-9
SLIDE 9

Space - Satcom - SDR

slide-10
SLIDE 10

Space is hard and so is SDR. Trying to use SDRs in space missions without sufficient understanding can add unnecessary risks to the mission. SDR Makerspace aims to bring open-source SDR technology to the space industry, focusing on the practical aspects of satellite communications.

SDR Makerspace

slide-11
SLIDE 11

Investigate the use of SDR technology in space applications

  • Collaboration between ESA and LSF
  • 500 k€ budget over 14 months
  • Open-source HW and SW projects running up to 3 month
  • Bring some “maker culture” into the space industry
  • Focus on satcom
  • Activities at various TRL levels

SDR Makerspace

slide-12
SLIDE 12

Many sub-activities, each running for up to 3 months

  • LSF scouts for potential implementers
  • Implementers send in proposal and carry out the work
  • Use online collaboration tools like Gitlab

How?

Proposal SoW Scouting Task 1 Task 2 Task 3

MS1 MS2

Report Code Weekly activity meetings

slide-13
SLIDE 13

GNU Radio:

  • gr-soapy
  • gr-leo
  • gr-ccsds
  • IQ storage

Subactivities

Testing:

  • SDR hardware
  • SDR software
  • FPGA toolchains
  • Radiation tests

R&D:

  • LDPC SIMD
  • Direct sampling
  • AI, ML, DNN
  • FPGA in the cloud

More to come!

slide-14
SLIDE 14

gr-soapy

Soapy RTLSDR Soapy UHD Soapy LMS7 Soapy BladeRF

Soapy SDR

...

gr-soapy GNU Radio application

Similar to gr-osmosdr but using plugins as back-ends

https://gitlab.com/librespacefoundation/gr-soapy

slide-15
SLIDE 15

gr-soapy

slide-16
SLIDE 16

gr-leo

Satellite communication channel simulator

  • Free space loss
  • Atmospheric gasses attenuation
  • Rainfall attenuation
  • Doppler shift
  • Pointing losses
  • Models from ITU-R P.xxx

https://gitlab.com/librespacefoundation/gr-leo

slide-17
SLIDE 17

gr-leo

slide-18
SLIDE 18

gr-leo

slide-19
SLIDE 19

Simulation with hardware in the loop

gr-leo

GNU Radio gr-leo SDR device

Mission data GNU Radio RX Mission parameters

Image: Flatsat by FASTRAC

slide-20
SLIDE 20

SDR transceivers implementing the CCSDS standards:

  • CCSDS 131.0: Telemetry
  • CCSDS 231.0: Telecommand
  • CCSDS 401.0: RF and modulation

gr-ccsds

GNU Radio gr-ccsds SDR device Mission data RF frontend https://gitlab.com/librespacefoundation/gr-ccsds

slide-21
SLIDE 21

Investigate IQ data compression and storage

IQ database

slide-22
SLIDE 22

Survey and tests of SDR hardware and software

  • Performance under realistic conditions
  • Radiation testing of selected devices
  • FPGA toolchains
  • Complexity
  • Open-source friendliness

Tests and evaluations

slide-23
SLIDE 23

Community

sdrmaker.space