Scenario Generation and Visualization

Simulation, analysis, and visualization of satellites in orbit

Generate satellite scenarios to model and visualize satellites in orbit and to perform additional analyses such as computing access with ground stations.

Objects

`satelliteScenario`	Satellite scenario
`satelliteScenarioViewer`	Create viewer for satellite scenario
`Satellite`	Satellite in satellite scenario
`GroundStation`	Ground station object belonging to satellite scenario
`ConicalSensor`	Conical sensor object belonging to satellite scenario
`GroundTrack`	Ground track object belonging to satellite in scenario
`Transmitter`	Transmitter object belonging to satellite scenario
`Receiver`	Receiver object belonging to satellite scenario
`Pattern`	Radiation pattern visualization
`Gimbal`	Gimbal object belonging to satellite scenario
`Access`	Access analysis object belonging to scenario
`FieldOfView`	Field of view object belonging to satellite scenario
`Link`	Link analysis object belonging to Transmitter

Functions

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Satellite Scenario, Satellites, and Ground Stations

`aer`	Calculate azimuth angle, elevation angle, and range of another satellite or ground station in NED frame
`advance`	Move simulation forward by one sample time
`dopplershift`	Calculate Doppler shift at target asset in satellite scenario
`hide`	Hide satellite scenario entity from viewer
`latency`	Calculate propagation delay from one asset to another asset
`orbitalElements`	Orbital elements of satellites in scenario
`play`	Play satellite scenario simulation results on viewer
`restart`	Restart simulation from beginning
`show`	Show object in satellite scenario viewer
`skyplot`	Plot satellite azimuth and elevation data
`states`	Obtain position and velocity of satellite

Viewer

`campitch`	Set or get pitch angle of camera for Satellite Scenario Viewer
`camroll`	Set or get roll angle of camera for Satellite Scenario Viewer
`campos`	Set or get position of camera for Satellite Scenario Viewer
`camheading`	Set or get heading angle of camera for Satellite Scenario Viewer
`camheight`	Set or get height of camera for Satellite Scenario Viewer
`camtarget`	Set camera target for Satellite Scenario Viewer
`hideAll`	Hide all graphics in satellite scenario viewer
`showAll`	Show all graphics in viewer

Access Analysis

`accessPercentage`	Percentage of time when access exists between first and last node in access analysis
`accessIntervals`	Intervals during which access status is true
`accessStatus`	Status of access between first and last node defining access analysis

Transmitters, Receivers, and Link Analysis

`gaussianAntenna`	Add Gaussian antennas
`ebno`	Eb/No at final node of link
`linkPercentage`	Percentage of time when link between first and last node in link analysis is closed
`linkStatus`	Status of link closure between first and last node
`linkIntervals`	Intervals during which link is closed
`sigstrength`	Calculate received signal strength at last node of link

Gimbals

`gimbalAngles`	Steering angles of gimbal
`pointAt`	Point satellite at target

Topics

Satellite Scenario Basics
Build complete satellite scenario simulation.
Satellite Scenario Key Concepts
Learn common satellite scenario visualization terms.

Featured Examples

Aircraft-to-Satellite Communication for ADS-B Out

Examines the Automatic Dependent Surveillance–Broadcast (ADS-B) Out connectivity of a flight from JFK International Airport in New York to L.F. Wade International Airport in Bermuda. The ADS-B Out system can connect to a variety of targets including airports and the Iridium NEXT satellite constellation. As a result, even while the aircraft does not have a direct line of sight with any ground station due to the Earth curvature over open water, the satellite ADS-B connection allows the aircraft to still provide continuous attitude, GPS position, and status to all other aircraft and airports interested in the aircraft state. The ADS-B system responds to the strongest ADS-B update initiator. The omnidirectional antennas on the top and bottom of the aircraft broadcast out to initiate the ADS-B update.

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Multi-Hop Satellite Communications Link Between Two Ground Stations

Set up multihop link between two ground stations.

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Satellite Constellation Access to Ground Station

Set up access analysis between a ground station and conical sensors onboard a constellation of satellites.

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Comparison of Orbit Propagators

Compare the orbits predicted by the Two-Body-Keplerian, SGP4, and SDP4 orbit propagators.

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Calculate Latency and Doppler in a Satellite Scenario

Model and calculate the latency and doppler frequencies between the satellite and the ground station.

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Modeling Satellite Constellations Using Ephemeris Data

Add time-stamped ephemeris data for a constellation of satellites to a satellite scenario for access analysis.

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Interference from Satellite Constellation on Communications Link

Analyze interference on a downlink from a constellation of satellites.

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Estimate GNSS Receiver Position with Simulated Satellite Constellations

Track the position of a ground vehicle using a simulated Global Navigation Satellite System (GNSS) receiver.

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Multi-Hop Path Selection Through Large Satellite Constellation

Select the multi-hop path through large satellite constellation to gain access between two ground stations.

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Modeling Custom Satellite Attitude and Gimbal Steering

Point satellite or gimbal in satellite scenario using logged orientation data from timetable or timeseries.

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Location-Based Analysis of Visible GPS Satellites

Analyze the visible global positioning system (GPS) satellites from a particular location using satelliteScenario.

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