Ground stations
Ground segment and telemetry
Overview
Ground-station antennas and control facilities for tasking, telemetry and data reception. The terrestrial backbone behind every space mission.
Own the terrestrial backbone of your missions outright.
Capabilities
- Antennas and control facilities
- Tasking, telemetry and data reception
- Terrestrial backbone for space missions
Specifications
| Type | Ground segment |
| Function | Tasking / telemetry |
| Role | Mission backbone |
| Origin | Independent / non-aligned |
In depth
The terrestrial part of a space mission
A spacecraft cannot be tasked, monitored or used as a data source without a ground segment. The ground-station capability consists of antennas and control facilities that provide the terrestrial backbone for space missions. Its listed functions are tasking, telemetry and data reception. Tasking sends the mission's instructions toward the spacecraft. Telemetry brings spacecraft status back to the operators. Data reception provides the route for the payload information the mission is meant to collect. The distinction matters because owning or procuring a spacecraft does not by itself specify where the mission is controlled or where its data is received. The catalogue describes ground stations as the backbone behind every space mission. The detail record identifies the type as ground segment and the role as mission backbone. Those facts support a requirement-led discussion about the antennas, control facilities, operating functions and mission interfaces needed for the spacecraft in question.
Match the segment to the spacecraft
Observation satellites need a path for tasking and imagery downlink. Communication satellites need a terrestrial interface for the service and its operations. Mission-control software needs facilities from which operators can plan, task, read telemetry and manage fleet operations. The ground station is the point where these functions meet the mission. It is therefore related directly to observation satellites, communication satellites and mission-control software in the catalogue. The record does not publish antenna dimensions, frequency bands, throughput, location, redundancy arrangements or staffing levels. Those values should not be inferred from the category name. They belong to the configuration discussion, alongside the spacecraft, the data-reception requirement and the control facilities already available to the buyer. What is established is narrower and useful: the offer covers antennas and control facilities for tasking, telemetry and data reception, as an owned terrestrial backbone for space missions.
Define custody before acquisition
The ground segment is also an authority question. Tasking passes through the facilities that control the mission, telemetry returns to the operators who monitor it, and received data passes through the infrastructure that handles the mission's output. A requirement should therefore identify who needs to task the spacecraft, who needs to read telemetry and where received data must be available. The ground-station record supports those questions without pretending to answer unlisted technical details. A national ground-segment programme can be scoped to the mission it must serve. The existing exposition identifies antennas, a control centre, a network and trained operators as the elements to consider. It also describes tasking and data landing on national soil first when a national segment is used. These are control and custody decisions, not published antenna specifications. They explain why a spacecraft programme that rents the terrestrial backbone can still leave tasking and reception outside the buyer's control. The network and control centre are not decorative additions. They are the route by which an operator's tasking reaches the spacecraft and by which telemetry and payload data return to the mission team. They also provide the place where the receiving and control functions can be assigned to the mission's own operators rather than left as an unexamined external service. In that arrangement, the ground segment is where mission authority becomes an operating procedure: someone tasks, someone monitors telemetry and the facility receives the resulting data. That division of work should be visible in the requirement and acceptance discussion, even though the source does not prescribe a particular facility design. The related space capabilities provide the surrounding context. Observation satellites supply electro-optical and radar sensing. Communication satellites provide LEO satellite communications. Mission-control software supplies the planning, tasking, telemetry and fleet-operations layer. A ground-station programme connects those functions at the terrestrial end and can support observation, communications and other missions from common owned infrastructure. A shared facility can therefore be considered where several missions need the same terrestrial backbone, while the actual antennas, network and control arrangements remain configuration questions. Export eligibility, interfaces, siting, support and delivery arrangements still require a product-specific briefing because the source record contains no verified deployment history or performance figures. The published proposition stops at that backbone role. It does not silently turn an unspecified antenna, location or throughput into a product specification. Its stated type is ground segment, its function is tasking and telemetry, and its role is mission backbone. Those labels define the supported scope without supplying technical values that are not published.
Why Unstrat: the difference
Unstrat is the authorised global representative and distributor for this capability. It is already in service with a track record behind it, so you are buying something that has done the job elsewhere, not funding a first attempt. You are not the test bed.
Independent, non-aligned origin, with no political exposure to any major-power ecosystem.
One accountable team from first briefing through delivery and in-region sustainment.
Tasking, telemetry and reception under your control.
How it reaches you
Related capability
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Procurement & sustainment
Classification and the end-user-certificate chain are confirmed before this capability is represented to your market.
Sourced from an independent manufacturer: no major-power disclosure rules or political conditions.
A single team responsible from first briefing through delivery: not a chain of foreign primes to integrate yourself.
Lifecycle support and operator training delivered in-region, building capability that outlasts the initial deployment.
Applications it supports
Capability comparisons
Questions buyers ask
What is a satellite ground station?
It is the terrestrial half of a space mission: the antennas and control facilities that send tasking up and bring telemetry and payload data down. Without it a satellite is an expensive object in orbit that nobody can command or read. We supply the antennas and control facilities as working equipment carrying live tasking, telemetry and data reception for missions in service.
Ground station as a service or build your own?
Service access has almost no capital cost, scales instantly and is well documented: KSATlite publishes 26 stations, more than 150 antennas and historical performance above 99.75%. Ownership costs capital, site works, power, security and staff, and will never match a global network on pass count. The variables that flip the decision are mission duration, data volume and sensitivity, and most serious programmes end up doing both.
See: Side-by-side with KSAT and SSCSovereign ground segment against a data service
How much does a satellite ground station cost?
We do not publish price bands, because cost is driven by antenna size, band coverage, civil works and availability commitment rather than by a catalogue number. The honest way to compare is to price a service contract across the full mission life against the capital and running cost of your own site. If you plan to fly national satellites for a decade and downlink sensitive imagery, the service contract quietly becomes the more expensive option as well as the less controllable one.
National ground station for military satellite telemetry
The requirement here is not throughput, it is jurisdiction. On a commercial network your telemetry lands on the operator's territory under the operator's law, and KSAT's network spans Svalbard to Antarctica while SSC's partner sites run from Finland to South Africa and Japan. We supply antennas and control facilities you own outright on your soil, so tasking, telemetry and reception stay inside your borders.
Can we own antennas and still use a commercial network?
Yes, and most serious programmes do exactly that. SSC publishes launch and early orbit phase and critical TT&C services, which is the phase where extra antennas matter most, and KSAT operates an automated network with API-driven scheduling. Use commercial passes for early orbit, polar coverage and surge, and your own antennas for routine operations and anything you would not want processed abroad.
See: How the two models combineGround segment capability brief
What specifications should a ground station tender ask for?
Antenna diameter, G/T, EIRP, bands supported in each direction, tracking rates, availability commitment and the sustainment plan for spares and firmware. KSAT publishes antenna sizes from 3.7 m to 6.1 m, S, X and Ka-band support and its historical availability figure. We do not publish those numbers yet, so ask us for them in writing during evaluation and compare like for like rather than trusting either description.
Ground station for downlinking classified imagery
If the data is classified, the reception site is part of the classification boundary, which no shared commercial network can satisfy. Our model puts the antennas and control facilities on your territory under your ownership, with the pass schedule yours alone rather than contended with other customers. That is the constraint that usually decides the case, and it is worth settling before any technical scoring begins.
Who gets pass priority on a shared ground network during a crisis?
Whoever the contract says, and most customers never read that clause until it matters. KSATlite serves over 150 operators with 145,000 contacts a month, which is efficient until two customers want the same pass during the same emergency. On your own antennas there is no contention, because the schedule is yours. This is a small row in a comparison table and a large problem on the day.
Our telemetry currently lands on a foreign network. What does it take to move reception onto our own territory?
A site with power and security, antennas and control facilities sized to your fleet and bands, trained operators, and a transition period where both paths run in parallel. We supply the equipment as delivered and sustained hardware, installed and maintained in region rather than operated for you from a distant network operations centre. Keep commercial passes for early orbit and surge while your own antennas take over routine operations.
We only fly two satellites. Is our own ground station justified?
On pass economics alone, probably not: a shared network will give you more contacts for less money. The case for ownership rests on sensitivity, jurisdiction and duration. If the payload data is classified, if national law requires reception on national soil, or if you intend to grow the fleet over a decade, the antenna is infrastructure rather than an accessory to two spacecraft. If none of those apply, subscribe and revisit the decision at the next procurement.
What does a ground station site actually need: land, power, staff?
Site footprint, clear sky view, reliable power, physical security and a trained operations team are the practical constraints, and the staffing usually proves harder than the civil works. We do not publish installation timelines or site requirements, so make them a written deliverable in the contract rather than an assumption. Operator training is delivered alongside the equipment, which is the part that decides whether the antenna is useful in year two.
How do we cover launch and early orbit if we have only one antenna?
You rent the coverage you cannot build. Launch and early orbit is exactly the phase where a global network earns its fee, and SSC publishes launch and early orbit phase and critical TT&C services for that purpose. Plan a hybrid from the start: commercial passes through commissioning, then routine operations on your own antennas once the spacecraft is stable and the operators are trained.
See: Roles each network playsGround segment capability brief
If we own the ground stations, who maintains them in ten years?
Sustainment is the question that decides whether ownership was a good idea, and it should be scored during procurement rather than discovered later. Our model is in-region installation and maintenance with training delivered alongside the equipment, so the first-line skills sit with your staff rather than a distant operations centre. Ask any bidder, including us, for the spares plan, the firmware update path and the response time commitment in writing.
See: Ground stations
Does owning the ground segment make us sovereign if the satellite is foreign?
It makes you more sovereign than owning neither, and it is usually the cheaper half of the problem to fix. Reception on your soil means the raw data lands under your law and your analysts see it first, which resolves the custody question even when the spacecraft was built abroad. What it does not resolve is the export licence behind the next spare or software load for that spacecraft, which is why we treat ground stations, satellites and mission control as one programme rather than three purchases.
Can our own ground station handle scheduling and automation as well as a commercial network?
Commercial networks set a high bar here: KSAT publishes API-driven scheduling, machine-to-machine interfaces, a customer portal and anomaly detection. We publish that tasking, telemetry and data reception sit under your control, but not the interface detail behind it, so ask for the scheduling and automation specification in writing during evaluation. Pair the antennas with mission-control software that is independent of any satellite vendor and the automation question becomes part of the ground software scope rather than the antenna contract.
See: Scheduling and automation comparedMission-control software
Ground stations: questions
What are Ground stations?
Ground stations are Unstrat's Space (Space Domain) capability: Ground-station antennas and control facilities for tasking, telemetry and data reception. The terrestrial backbone behind every space mission.
How do Ground stations work?
Ground stations deliver their effect through antennas and control facilities, Tasking, telemetry and data reception and Terrestrial backbone for space missions, capabilities matched to the requirement and confirmed under briefing rather than published.
Who makes Ground stations?
Ground stations are built by The Ground Segment Specialist, whose focus is ground stations & ground segment. Unstrat represents The Ground Segment Specialist to government and enterprise buyers worldwide as an independent, non-aligned prime vendor.
Who uses Ground stations?
Government and enterprise buyers acquire Ground stations to address contested & denied communications and dependence on foreign satellites across the space domain, matched to the mission and accountable to them, not to a foreign vendor's government.
Why choose Ground stations over a major-power alternative?
Ground stations are sourced from an independent, non-aligned manufacturer, so they carry no major-power disclosure rules, upgrade-locks or political ramifications. Concretely: Tasking, telemetry and reception under your control. The capability is accountable to you, not to a foreign vendor's government and its release schedule.
How are Ground stations procured, and where can it be exported?
Own the terrestrial backbone of your missions outright. Every engagement begins with a briefing, and export eligibility is confirmed per market under briefing rather than published. Where controlled capabilities are involved, the classification and end-user-certificate chain is confirmed first. Ground stations are then sustained in-region by one accountable team from briefing through long-term operation.