THE COMMON INFRASTRUCTURE LAYER

See the ground segment.
Connect what’s possible.
Build what comes next.

An evidence-backed map of optical and RF infrastructure—connecting stations, terminals, spacecraft, providers, capabilities, and the sources behind every claim.

VALIDATED DATA · RELEASE 0.856 stations   27 terminals   17 accepted link events
ESA Optical Ground Station at Teide Observatory in Tenerife
01 / INFRASTRUCTUREESA OPTICAL GROUND STATIONTEIDE OBSERVATORY · 28.3007° N, 16.5110° W
IMAGE · H. RAAB / CC BY-SA 3.0 ↗

SEE. CONNECT. BUILD.

Shared visibility makes interoperability possible.

OGS Tracker models infrastructure once, then makes it usable as a map, a registry, a relationship graph, an evidence trail, and an open coordination surface.

01

Discover

Explore the whole Earth, move from stations to demonstrated links, and inspect evidence without losing map context.

Open working page ↗
02

Records

Browse accepted identities and route unresolved candidates into evidence review from one place.

Open working page ↗
03

Assess

Compare terminal evidence while keeping compatibility separate from demonstrated communication.

Open working page ↗
04

Model

Understand the shared information architecture that connects the ecosystem.

Open working page ↗

Discover ground-segment infrastructure

GLOBAL VIEW / 56 RECORDSConnecting
100%

Double-click or drag anywhere to explore

Complete NASA VIIRS Black Marble global night-light composite
StationEvidence envelopeUnresolved candidate
ogs:station:esa-ogs-tenerifeHigh confidence

ESA Optical Ground Station

Tenerife, Canary Islands · Spain

OperationalOpticalExact location
Coordinates
28.299° N · 16.512° W
Evidence envelope
Not quantified
Accepted events
2
Open review issues
1

Browse OGS Tracker records

02 / RECORDS

Find the record
you came for.

Search persistent identities first, then narrow by object type. Accepted records and unresolved candidates stay visibly separate.

56 matching stationsCountry locators · Natural Earth 1:50m

03 / DATA RELEASE 0.8

Trust is a product surface.

The same source records now carry validated location quality, corrected endpoint identities, and narrowly scoped configuration history. Uncertainty stays visible instead of being flattened into false precision.

56Station identities
27Canonical terminals
55Organizations
17Accepted link events
314Sources
831Claims
23Open review records
65 / 65Validation checks
CLASSIFIED

56 locations, zero unknowns

Eleven previously unresolved points now have explicit precision classes backed by 17 source records; the other 45 retain their validated classification.

CONSERVATIVE BY DESIGN

Uncertainty stays visible

Santiago, Ngari, Redu, and WASC remain deliberately broad. Their map areas describe public-evidence limits, not measurement error.

COORDINATES PRESERVED

No invented exactness

No station point moved and no position is described as surveyed. Colocated station identities remain separate and individually selectable.

65 release checks passedAssessment · Ready with caveatsGenerated 28 AUG 2026
← Back to Needs reviewCURATOR WORKSPACE · DECISIONS DO NOT SILENTLY CHANGE THE RELEASE

04 / REVIEW QUEUE

Evidence becomes a decision.

Community proposals and unresolved release candidates share one curator workspace, but remain different objects. Every outcome is stored separately from canonical release 0.8.

0.8 DRAFT0 acceptedConnecting to draft projection

No proposals in this view.

Submit a contribution or choose another state to continue.

Assess terminal compatibility evidence

03 / COMPATIBILITY LENS

Ask what might work.
Never confuse it with proof.

Compare two uniquely identified endpoints, inspect what is actually documented, and see exactly why the result remains inconclusive. Demonstrated events stay visible as evidence—not as a substitute for a compatibility assessment.

SELECT ENDPOINTS

GROUND EVIDENCE2 known · 2 partial4 sources across this pair · coverage is not a score.
V0.8 STAGING

104 exact claim projections · 27 candidate values held for review.

Return to map lens ↗
DERIVED ASSESSMENT PREVIEW
No observed event for this pairInsufficient evidence
Endpoint identity
GROUNDAccepted terminal identity
SPACEAccepted terminal identity
Known
Communication medium
GROUNDOptical
SPACEOptical
Known
Wavelength
GROUNDReceive wavelength 847, 1,550 nm
SPACENo structured value
Partial
Pointing / acquisition
GROUNDUplink beacon documented
SPACEPointing / acquisition Repeated acquisition and tracking of ground laser signals
Partial
Data rate / modulation
GROUNDNo structured value
SPACERate capability 10 Gb/s
Partial
Protocol / coding
GROUNDNo structured value
SPACENo structured value
Unknown
WHY THIS IS INCONCLUSIVE

Some terminal-level evidence is now structured, but the pair is still missing or only partially documents these versioned inputs:

Ground Wavelength · partialSpace Wavelength · missingGround Pointing / acquisition · partialSpace Pointing / acquisition · partialGround Data rate / modulation · missingSpace Data rate / modulation · partialGround Protocol / coding · missingSpace Protocol / coding · missing

No event is recorded for this exact pair. A shared medium is still not enough to assert compatibility.

STAGING OBJECT · NOT CANONICALogs:compatibility-assessment:preview:esa-ogs-tenerife:badr8-teleo
ruleset compatibility-readiness/0.1 · inputs release 0.8 · evaluated 2026-08-29

SERVICE OFFERING

Capability is not availability.

A technical match does not establish that infrastructure can be booked, purchased, or accessed.

NO VERIFIED OFFERING0 records in release 0.8

No commercial access, scheduling path, geographic coverage, service level, or pricing is inferred from a station’s technical capability.

ProviderAwaiting a named organizationAvailable terminalsAwaiting explicit scopeAccess + schedulingAwaiting documented termsCoverage + validityAwaiting time-bound evidence

OGS Tracker common information model

06 / COMMON MODEL

The system beneath
the map.

Use the model to answer practical questions: what a record represents, where its identity begins and ends, how it connects, and what the evidence actually supports.

17core object types
4model families
1claim-level evidence path
0.8current canonical release

FOLLOW A RELATIONSHIP

Start with the question you have.

Each path preserves a different kind of truth. Select a node to inspect its identity boundary.

01 / INFRASTRUCTURE IDENTITY

Where does technical capability live?

A geographic place hosts an operational system. The uniquely addressable Terminal is where communications capability belongs.

  1. hosts
  2. contains
  3. has

OBJECT REFERENCE

Inspect one boundary at a time.

PHYSICAL OBJECT

Terminal

ogs:terminal:{stable-id}
WHAT IT IS

A uniquely addressable communications endpoint where technical capability lives.

IDENTITY BOUNDARY

Separated when endpoints can be independently configured, scheduled, or linked.

CONNECTS THROUGH
partOf Station, Platform, or SpacecraftendpointOf Link
DO NOT CONFLATE

Not automatically identical to its parent station or spacecraft.

APPEARS IN

CONTROLLED RELEASE PATH

Evidence moves forward.
History stays put.

A contribution can add knowledge without overwriting the current record. Each stage creates a visible, reviewable boundary.

Read the correction policy
  1. 01Source intake

    Evidence enters as its own artifact.

  2. 02Claim

    One reviewable assertion is staged.

  3. 03Decision

    The outcome and rationale persist.

  4. 04Draft projection

    Accepted claims enter the next draft.

  5. 05Versioned release

    Validation publishes a new snapshot.

07 / PUBLIC BETA

Use the data.
Keep the trail.

OGS Tracker is open data under CC BY 4.0. Cite the release, preserve claim-to-source references, identify changes, and send sourced corrections through the controlled editorial channel.

License + citation