constellationspace/demo-fleet

Constellation Demo Fleet

A ready-made satellite and ground-station fleet from Constellation Space: 6 ground stations, 39 satellites, 21 ground-antenna links with link-budget state, and 4 traffic demand pools. It is the same fleet the Constellation API loads with load_demo_fleet, so you can explore it here and then run forecasts on it in the Constellation Platform.

This release is a snapshot: each entity's newest values as of 2026-10-10T23:07:10Z. A time-series release (two hours of 15-second SNR telemetry and seven days of ten-minute demand) will follow.

Files

Config	File	Rows	What it holds
links (default)	links.csv	21	One ground antenna to one satellite: pointing, geometry, RF configuration, and observed SNR
ground_stations	ground_stations.csv	6	Station name, WGS84 latitude and longitude, and the demand pool it serves
satellites	satellites.csv	39	NORAD catalog id and name (O3b, O3b mPOWER, Globalstar, PROBA-2, PROBA-3, Sentinel-1C, BIOMASS)
demand_pools	demand_pools.csv	4	Latest ten-minute offered traffic per pool
	topology.json	70 entities	The same snapshot in the shape the API's topology endpoint returns

Columns

links.csv

Column	Unit	Meaning
entity_id		<station>__ant<n>: one antenna at one station
source		The ground station (ground_stations.entity_id)
target		The satellite (satellites.entity_id)
observed_at	UTC	Time of the newest sample
azimuth_deg	degrees	Pointing azimuth, clockwise from true north, in the station's local frame
elevation_deg	degrees	Pointing elevation above the local horizon
slant_range_km	km	Line-of-sight distance from antenna to satellite
frequency_ghz	GHz	Carrier frequency
bandwidth_mhz	MHz	Channel bandwidth
eirp_dbw	dBW	Effective isotropic radiated power of the transmitter
g_t_db_k	dB/K	Receive figure of merit (antenna gain over system noise temperature)
snr_db	dB	Observed signal-to-noise ratio

ground_stations.csv

entity_id, name, lat_deg and lon_deg (WGS84 degrees), and pop_id, the demand pool the station serves.

demand_pools.csv

pool_id, interval_start (UTC, start of a ten-minute interval), inlet_bytes (offered bytes in that interval), and evidence_kind.

Things to know

• Demand is synthetic. Every pool row has evidence_kind = synthetic_offered: it is generated traffic for exercising demand forecasts, not measured customer traffic.
• Not every link closes. SITE-9c5100cd2d6c__ant0 to PROBA-3 sits near 48,800 km slant range at -12.5 dB SNR, which is realistic for a spacecraft near the far point of a highly elliptical orbit and is kept as an example of a link that does not close.
• Links come and go. Antennas that are not tracking a satellite stop reporting, so observed_at varies by link.
• Satellite names and NORAD ids are public catalog identifiers.

Use it

from datasets import load_dataset

links = load_dataset("constellationspace/demo-fleet", "links", split="train")
print(links.to_pandas().sort_values("snr_db").head())

Run forecasts on the same fleet with the API (create a key in the Platform, then load the fleet from the Dashboard or an MCP client):

curl -H "x-api-key: $CONSTELLATION_API_KEY" https://api.constellation.space/topology

License

CC BY 4.0. Credit "Constellation Space" when you use it.