SPACE COMMUNICATIONS / INTERACTIVE EVALUATION
From orbit to recovered image.
Explore the link. Tune the conditions. See what the decoder recovers.
A satellite pass, in motion
NASA satellite and tracking antenna models · live analytical geometry
The ground station stands on inland equatorial Africa. Meshes are enlarged for inspection; orbit height uses the selected altitude. A steerable radio antenna is added to the NASA spacecraft for illustration. Wavefront speed and width are illustrative. Each RTL run captures the current model conditions.
Model assumptions and references
Rotating spherical Earth, equatorial prograde circular orbit, ground station in the orbit plane. Passes loop at the selected minimum elevation. Received Eb/N0 is independent of displayed free-space loss. NTN uses two fixed inland sites and separate service/feeder ranges. The spacecraft transparently forwards the illustrated uplink; processing stays at the ground endpoints. Only service-link Doppler is modelled.
NASA Landsat 9 model and tracking antenna; orbital mechanics reference. No NASA endorsement.
Your free evaluation
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Recorded CCSDS / NR performance comparison
Configure an experiment
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Inputs are bounded. Every run uses the private evaluator; changing a slider alone does not create a measured result.
Observe the result
Image transport · complete payload results
Conditions evaluated by RTL
These values belong to the completed run. The live scene above continues independently.
Composable PHY building blocks
Input and output bit preview
Highlighted bits differ from the reference. This preview is a subset; error counts use complete frames.
Compare your experiments
Only executed runs appear. Compare like configurations and sample counts; these short runs are not a validated BER qualification.