( = very small aperture terminal, "väga väikese apertuuriga terminal")

olemus
satelliitside tehnoloogia ja maajaam paraboolantenni läbimõõduga 50-100 lainepikkust: Ka-sagedusalal alla 2m, Ku-alal alla 4m, C-alal alla 8m
= a two-way earth station that receives and transmits data, voice, and video signals via a satellite communication

rakendusi
Internet, sealhulgas VoIP, kõneside ja faks, videokonverents, muu andmeside

ülevaateid
https://en.wikipedia.org/wiki/Very-small-aperture_terminal
https://iosrjournals.org/iosr-jece/papers/Vol.%2010%20Issue%201/Version-3/D010131824.pdf
https://fastercapital.com/topics/introduction-to-vsat-earth-stations.html
https://www.wiley.com/en-us/VSAT+Networks,+2nd+Edition-p-9780470866863

turvalisus
https://blog.apnic.net/2020/10/01/evolving-threats-in-maritime-vsat-security/
http://securityaffairs.co/wordpress/21049/hacking/vsat-terminals-opened-targeted-cyber-attacks.html
https://www.itu.int/dms_pub/itu-r/opb/rep/R-REP-S.2278-2013-PDF-E.pdf
https://ozdenercin.com/2024/07/25/understanding-vsat-cybersecurity-risks-a-comprehensive-guide/