Happy birthday Network type amateur ground station Generation
- Happy birthday!! Network type amateur ground station Generation!!
It is history of amateur ground station.
I divided 3 generations.
No.1 generation is rig type
No.2 generation is software defined radio type.
No.3 generation is network type.
Rotater/Manual + decode software from audio/manual • 1st Gen. : Rig + Hamlib + gpredict (or calsat32......) • 2nd Gen. : SDR + GQRX (or SDR# or Direwolf or GNU Radio or rtl_fm command……) • 3rd Gen. : With Network (WebSDR, Satnogs, TTN(Lacuna)) <- We are here!!
• Sometimes a ham operator build radio tower in home. Ref. 1: https://www.jsdi.or.jp/~tina88/7k4iin/satant.html Ref. 2: https://www.slideshare.net/noritsuna/ss-82306748 Ref. 3: http://www.astro.mech.tohoku.ac.jp/~gsn/jp/index.php? %CB%CC%B3%A4%C6%BB%B2%CA%B3%D8%C2%E7%B3%D8%28%B5%EC%CB%CC%B3%A4%C6%BB%B9%A9%B6%C8%C2%E7%B3%D8%29
It can acquire IQ(Raw) data to PC. • RTL-SDR(RTL2832) is widely used. First famous satellite project is Funcube dongle. Ref. : https://www.rtl-sdr.com/wp-content/uploads/2018/02/RTL-SDR-Blog-V3-Datasheet.pdf
data and decoding FM modulation. • It can enable than GNU Radio in low power PC. • It had used cubehub, satnogs. It can correct doppler correlation from TCP/IP port. Ref. : http://kmkeen.com/rtl-demod-guide/
Station Network Working Group. But details have not gotten yet. • Also detail of GENSO project (JAXA/ESA/NASA) have not gotten yet. Ref. 1: https://researchmap.jp/read0138520/published_papers/20899026 Ref. 2: http://www.astro.mech.tohoku.ac.jp/~gsn/jp/