SupremeSAT: distinguish a spacecraft from a communications service

SupremeSAT represents a commercial route into Sri Lanka’s space sector, through satellite communications and ground services. Its history differs from ACCIMT’s small-satellite engineering program. A communications provider can deliver a useful service through capacity on a partner’s spacecraft and local ground infrastructure. That contribution should be described accurately without assuming that the provider manufactured or owned every spacecraft involved.

The ITU’s 2016 satellite table groups SupremeSat 1 with ChinaSat 12 and APSTAR 7B. APT Satellite’s 2012 annual report documents transfer of its interests in APSTAR 7B, also called ChinaSat 12, to China Satcom and records launch on 27 November 2012. These names therefore cannot be counted as three separate launches. A branded service, a contract history and a physical spacecraft record describe connected but different things.

SupremeSAT’s own satellite page describes SupremeSAT-3 as using capacity in partnership with Intelsat at 45 degrees east. The same page presents SupremeSAT-2 as a contracted development plan with a changed timeline. A portfolio heading containing three numbered names is not proof that three separately owned satellites have launched. Keep the source’s reported service role and development status attached to each entry.

For a fictional network, suppose a provider has 120 megabits per second of usable capacity and promises three customers 50 megabits per second each at the same time. The promises total 150, exceeding the shared capacity by 30. This cannot be solved by giving the service another name. The provider needs additional capacity or an explicitly different sharing arrangement. The example is not a measurement of SupremeSAT’s network.

Count commitments against usable capacity

A satellite path still needs a working terminal, correctly configured equipment, power and a connection to the intended user network. SupremeSAT describes teleport — open definition and ground-service roles alongside its satellite offerings. A teleport is a ground facility that supports satellite communications and connections to other networks. A coverage footprint by itself does not establish that a particular customer has usable equipment or an active service.

When evaluating a proposed connection, follow a test message all the way from the user to its destination and back. Record throughput, delay and interruptions under stated conditions, and distinguish shared peak rates from committed simultaneous capacity. The same discipline used for a research satellite applies here: identify what was built, what is provided by partners, what remains planned and what the complete system demonstrably delivers.