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Global Sensor Network Metrics (GSN)

The GSN Metrics provides visibility into space domain awareness by aggregating observational data from Slingshot Global Sensor Network (SGSN).

Overview

his dashboard provides visibility into:

  • Satellite tracking coverage

  • Observational activity

  • Catalog completeness

  • Tracking performance metrics

  • Data recency and positional uncertainty

The GSN dashboard helps operators, analysts, and mission planners understand how effectively objects in orbit are being monitored.

Why customers value this information
The GSN Metrics dashboard gives customers a clear view into how effectively space objects are being monitored across Slingshot’s Global Sensor Network. By surfacing tracking coverage, observational activity, catalog completeness, tracking frequency, data recency, and positional uncertainty metrics in one place, it helps operators, analysts, and mission planners quickly assess the quality, timeliness, and reliability of the data supporting their decisions. This visibility improves confidence in space domain awareness, highlights potential gaps in coverage, and helps customers better understand orbital activity and support mission planning with greater speed and precision.


Accessing the GSN Dashboard

You can access the Global Sensor Network dashboard from the App Switcher.

Steps

  1. Click the App Switcher (grid icon) in the top-left corner of the portal.

  2. Select Global Sensor Network.

You may also access GSN from Quick Actions

The dashboard will load with the latest sensor network statistics and performance metrics.

Note: Free plans have a limited view of the dashboard. Paid plans have full access to Slingshots network metrics.


Slingshot Orbital Alert Highlights

At the top of the dashboard is the Slingshot Orbital Alert Highlights section.

This panel displays notable events and insights detected across the sensor network, such as:

  • Satellite maneuvers

  • Orbital changes

  • Object fragmentation events

  • Conjunction activities

  • Mission anomalies

Each alert includes a Read Story link for deeper context and analysis.


Lifetime Metrics

The Lifetime Metrics section summarizes the overall performance and scale of the sensor network.

These metrics include:

Observations Made

Total number of public sensor observations collected across the Slingshot Global Sensor Network.

This metric reflects the historical scale of tracking activity performed by the SGSN.

Public Objects Observed

The total number of unique space objects that have been tracked.

This includes:

  • Active satellites

  • Inactive satellites

  • Debris

  • Rocket bodies

State Vectors Generated

The number of orbital state vectors calculated from observational data.

State vectors describe the precise position and velocity of space objects.


30-Day Lookback Metrics

This section provides performance analytics for the past 30 days.

Average Position Uncertainty

This metric measures the average uncertainty in object position estimates.

Lower uncertainty indicates more accurate orbital tracking.


Objects Tracked

The Objects Tracked visualization shows the proportion of catalog objects that are successfully identified.

Categories include:

  • Identified objects – objects matched to a known catalog entry

  • Unidentified objects – objects detected but not yet fully identified

This metric helps measure catalog completeness and tracking confidence.


Active Catalog Payload Coverage

This visualization compares GSN and DoD active catalog payload coverage over a 30-day lookback across LEO, GEO and Other.

Coverage categories include:

  • LEO (Low Earth Orbit)

  • GEO (Geostationary Orbit)

  • All/Other regimes, which includes Medium Earth Orbit (MEO), Highly Elliptical Orbit (HEO), and other Earth orbits that are not classified as LEO or GEO.


State Recency

The State Recency chart indicates how recently orbital data has been updated for tracked objects.

Data is categorized by recency windows such as:

  • Less than 12 hours

  • 12–24 hours

  • 1–2 days

  • 2–5 days

  • 5–30 days

More recent updates indicate higher tracking fidelity and operational awareness.

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