access
Description
access(
adds asset1,asset2,...
)Access
analysis objects
defined by nodes asset1
, asset2
, and so on.
returns added
access analysis objects in the row vector ac
= access(___)ac
.
Examples
Add Ground Stations to Scenario and Visualize Access Intervals
Create a satellite scenario and add ground stations from latitudes and longitudes.
startTime = datetime(2020,5,1,11,36,0); stopTime = startTime + days(1); sampleTime = 60; sc = satelliteScenario(startTime,stopTime,sampleTime); lat = 10; lon = -30; gs = groundStation(sc,lat,lon);
Add satellites using Keplerian elements.
semiMajorAxis = 10000000;
eccentricity = 0;
inclination = 10;
rightAscensionOfAscendingNode = 0;
argumentOfPeriapsis = 0;
trueAnomaly = 0;
sat = satellite(sc,semiMajorAxis,eccentricity,inclination, ...
rightAscensionOfAscendingNode,argumentOfPeriapsis,trueAnomaly);
Add access analysis to the scenario and obtain the table of intervals of access between the satellite and the ground station.
ac = access(sat,gs); intvls = accessIntervals(ac)
intvls=8×8 table
Source Target IntervalNumber StartTime EndTime Duration StartOrbit EndOrbit
_____________ __________________ ______________ ____________________ ____________________ ________ __________ ________
"Satellite 2" "Ground station 1" 1 01-May-2020 11:36:00 01-May-2020 12:04:00 1680 1 1
"Satellite 2" "Ground station 1" 2 01-May-2020 14:20:00 01-May-2020 15:11:00 3060 1 2
"Satellite 2" "Ground station 1" 3 01-May-2020 17:27:00 01-May-2020 18:18:00 3060 3 3
"Satellite 2" "Ground station 1" 4 01-May-2020 20:34:00 01-May-2020 21:25:00 3060 4 4
"Satellite 2" "Ground station 1" 5 01-May-2020 23:41:00 02-May-2020 00:31:00 3000 5 5
"Satellite 2" "Ground station 1" 6 02-May-2020 02:50:00 02-May-2020 03:39:00 2940 6 6
"Satellite 2" "Ground station 1" 7 02-May-2020 05:58:00 02-May-2020 06:47:00 2940 7 7
"Satellite 2" "Ground station 1" 8 02-May-2020 09:06:00 02-May-2020 09:56:00 3000 8 9
Play the scenario to visualize the ground stations.
play(sc)
Add Platforms to Scenario and Visualize Access Intervals
Create a satellite scenario.
startTime = datetime(2020,5,1,11,36,0); stopTime = startTime + days(1); sampleTime = 60; sc = satelliteScenario(startTime,stopTime,sampleTime); lat = 10; lon = -30;
Add a platform using the given trajectory in the satellite scenario.
trajectory = geoTrajectory([40.6413,-73.7781,10600;32.3634,-64.7053,10600],[0,2*3600],AutoPitch=true,AutoBank=true); pltf = platform(sc,trajectory);
Add a satellite using Keplerian elements.
semiMajorAxis = 10000000;
eccentricity = 0;
inclination = 10;
rightAscensionOfAscendingNode = 0;
argumentOfPeriapsis = 0;
trueAnomaly = 0;
sat = satellite(sc,semiMajorAxis,eccentricity,inclination, ...
rightAscensionOfAscendingNode,argumentOfPeriapsis,trueAnomaly);
Add access analysis to the scenario and obtain the table of intervals of access between the satellite and the platform.
ac = access(sat,pltf); intvls = accessIntervals(ac)
intvls=7×8 table
Source Target IntervalNumber StartTime EndTime Duration StartOrbit EndOrbit
_____________ ____________ ______________ ____________________ ____________________ ________ __________ ________
"Satellite 2" "Platform 1" 1 01-May-2020 14:07:00 01-May-2020 14:54:00 2820 1 2
"Satellite 2" "Platform 1" 2 01-May-2020 17:11:00 01-May-2020 18:01:00 3000 3 3
"Satellite 2" "Platform 1" 3 01-May-2020 20:16:00 01-May-2020 21:06:00 3000 4 4
"Satellite 2" "Platform 1" 4 01-May-2020 23:22:00 02-May-2020 00:11:00 2940 5 5
"Satellite 2" "Platform 1" 5 02-May-2020 02:31:00 02-May-2020 03:15:00 2640 6 6
"Satellite 2" "Platform 1" 6 02-May-2020 05:43:00 02-May-2020 06:22:00 2340 7 7
"Satellite 2" "Platform 1" 7 02-May-2020 08:54:00 02-May-2020 09:33:00 2340 8 8
Play the scenario to visualize the platform and the satellite.
play(sc)
Input Arguments
asset1,asset2,...
— Satellite, platform, ground station, or conical sensor
scalar | vector
Satellite
, GroundStation
, ConicalSensors
,or Platform
object, specified as a scalar or vector. These objects must belong to the same satelliteScenario
object. The function adds the access analysis object to the Accesses
property of the corresponding asset in
asset1
.
If the asset in a given node is a scalar, every analysis object uses the same asset for that node position.
If the asset in a given node is a vector, its length must equal the number of access analysis objects. Each access analysis object uses the corresponding element of the asset vector for that node location.
Viewer
— Satellite scenario viewer
vector of satelliteScenarioViewer
objects (default) | scalar satelliteScenarioViewer
object | array of satelliteScenarioViewer
objects
Satellite scenario viewer, specified as a scalar, vector, or array of satelliteScenarioViewer
objects. If the AutoSimulate
property of the scenario is false
,
adding a satellite to the scenario disables any previously available timeline and
playback widgets.
Output Arguments
ac
— Access analysis
scalar | vector
Access analysis between input objects, returned as either a scalar or vector. For
more information about access analysis, see the Access
object.
Data Types: matlabshared.satellitescenario.Access
Note
When the AutoSimulate
property is set to false
, SimulationStatus
must be NotStarted
to call
access
function. Otherwise, use the restart
function to reset
the SimulationStatus
to NotStarted
. Note that
restart
also erases the simulation data.
Version History
Introduced in R2021a
MATLAB 명령
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