Satellite constellation case study WIP

2 files changed, 177 insertions, 0 deletions

diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/queries/SatelliteQueries.vql b/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/queries/SatelliteQueries.vql
new file mode 100644
index 00000000..d0542b4a
--- /dev/null
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/queries/SatelliteQueries.vql
@@ -0,0 +1,164 @@
+package hu.bme.mit.inf.dslreasoner.domains.satellite.queries
+
+import "http://www.example.org/satellite"
+
+@Constraint(severity = "error", key = {Link},
+        message = "Communication links must start from the containing element.")
+pattern communicationLinkDoesNotStartAtContainingElement(Link : DirectedCommunicationLink) {
+        CommunicatingElement.communicationLink(Element, Link);
+        DirectedCommunicationLink.source(Link, SourceComm);
+        CommunicatingElement.commSubsystem(SourceElement, SourceComm);
+        Element != SourceElement;
+}
+
+// At least two spacecraft must have the interferometry payload configured
+
+//@Constraint(severity = "error", key = {Mission},
+//      message = "Interferometry mission needs at least two spacecraft configured with the interferometry payload.")
+pattern notEnoughInterferometryPayloads(Mission : InterferometryMission) {
+        InterferometryMission(Mission);
+        neg find atLeastTwoInterferometryPayloads(Mission);
+}
+
+private pattern atLeastTwoInterferometryPayloads(Mission : InterferometryMission) {
+        find spacecraftWithInterferometryPayload(Mission, Spacecraft1);
+        find spacecraftWithInterferometryPayload(Mission, Spacecraft2);
+        Spacecraft1 != Spacecraft2;
+}
+
+private pattern spacecraftWithInterferometryPayload(Mission : ConstellationMission, Spacecraft : Spacecraft) {
+        ConstellationMission.spacecraft(Mission, Spacecraft);
+        Spacecraft.payload(Spacecraft, Payload);
+        InterferometryPayload(Payload);
+}
+
+// All spacecraft must have some communication path to the ground station
+
+@Constraint(severity = "error", key = {Spacecraft},
+        message = "Spacecraft has no communication path to the ground station.")
+pattern noLinkToGroundStation(Spacecraft : Spacecraft) {
+        ConstellationMission.groundStationNetwork(Mission, GroundStation);
+        ConstellationMission.spacecraft(Mission, Spacecraft);
+        neg find indirectCommunicationLink(Spacecraft, GroundStation);
+}
+
+// No communication loops may exist
+// No spacecraft may directly communicate with itself
+
+@Constraint(severity = "error", key = {Element},
+        message = "Communication loop.")
+pattern communicationLoop(Element : CommunicatingElement) {
+        find indirectCommunicationLink(Element, Element);
+}
+
+private pattern indirectCommunicationLink(Source : CommunicatingElement, Target : CommunicatingElement) {
+        find directCommunicationLink+(Source, Target);
+}
+
+private pattern directCommunicationLink(Source : CommunicatingElement, Target : CommunicatingElement) {
+        DirectedCommunicationLink.source(Link, SourceSubsystem);
+        DirectedCommunicationLink.target(Link, TargetSubsystem);
+        CommunicatingElement.commSubsystem(Source, SourceSubsystem);
+        CommunicatingElement.commSubsystem(Target, TargetSubsystem);
+}
+
+// Source and target communication systems must be compatible.
+
+@Constraint(severity = "error", key = {Link},
+        message = "Two ends of a communication link must use the same band.")
+pattern incompatibleSourceAndTargetBand(Link : DirectedCommunicationLink) {
+        DirectedCommunicationLink.source(Link, SourceSubsystem);
+        DirectedCommunicationLink.target(Link, TargetSubsystem);
+        CommSubsystem.band(SourceSubsystem, Band);
+        neg find commSubsystemBand(TargetSubsystem, Band);
+}
+
+private pattern commSubsystemBand(Comm : CommSubsystem, Band : TransceiverBand) {
+        CommSubsystem.band(Comm, Band);
+}
+
+@Constraint(severity = "error", key = {Link},
+        message = "Two ends of a communication link must use the same antenna gain.")
+pattern incompatibleSourceAndTargetGain(Link : DirectedCommunicationLink) {
+        DirectedCommunicationLink.source(Link, SourceSubsystem);
+        DirectedCommunicationLink.target(Link, TargetSubsystem);
+        CommSubsystem.gain(SourceSubsystem, Gain);
+        neg find commSubsystemGain(TargetSubsystem, Gain);
+}
+
+private pattern commSubsystemGain(Comm : CommSubsystem, Gain : AntennaGain) {
+        CommSubsystem.gain(Comm, Gain);
+}
+
+// UHF-band transmitters may only be combined with a low gain antenna
+
+@Constraint(severity = "error", key = {Comm},
+        message = "UHF transceiver must be combined with a low gain antenna.")
+pattern uhfAntennaGainNotLow(Comm : CommSubsystem) {
+        CommSubsystem.band(Comm, TransceiverBand::UHF);
+        // VIATRA will fail to infer a type constraint for the virtual variable introduced
+        // when an enum literal appears in a negative pattern call, so we use a helper pattern
+        // instead of neg find commSubsystemGain(Comm, AntennaGain::LOW);
+        neg find commSubsystemGainLow(Comm);
+}
+
+private pattern commSubsystemGainLow(Comm : CommSubsystem) {
+        CommSubsystem.gain(Comm, AntennaGain::LOW);
+}
+
+// X-band transmitters may only be combined with a medium gain antenna
+
+@Constraint(severity = "error", key = {Comm},
+        message = "X-band transceiver must be combined with a medium gain antenna.")
+pattern xAntennaGainNotMedium(Comm : CommSubsystem) {
+        CommSubsystem.band(Comm, TransceiverBand::X);
+        neg find commSubsystemGainMedium(Comm);
+}
+
+private pattern commSubsystemGainMedium(Comm : CommSubsystem) {
+        CommSubsystem.gain(Comm, AntennaGain::MEDIUM);
+}
+
+// Ka-band transmitters may only be combined with a medium or high gain antenna
+
+@Constraint(severity = "error", key = {Comm},
+        message = "Ka-band transceiver must be combined with a medium or high gain antenna.")
+pattern kaAntennaGainLow(Comm : CommSubsystem) {
+        CommSubsystem.band(Comm, TransceiverBand::Ka);
+        CommSubsystem.gain(Comm, AntennaGain::LOW);
+}
+
+// 3U CubeSats are assumed to only be able to downlink to Earth using an X-band trasmitter,
+// but cross-link using UHF
+
+@Constraint(severity = "error", key = {Sat},
+        message = "3U CubeSats can only cross-link using UHF.")
+pattern threeUCubeSatWithNonUhfCrossLink(Sat : CubeSat3U) {
+        CommunicatingElement.commSubsystem(Sat, SourceComm);
+        neg find commSubsystemBandUhf(SourceComm);
+        DirectedCommunicationLink.source(Link, SourceComm);
+        DirectedCommunicationLink.target(Link, TargetComm);
+        CommunicatingElement.commSubsystem(Target, TargetComm);
+        neg find groundStationNetwork(Target);
+}
+
+private pattern commSubsystemBandUhf(Comm : CommSubsystem) {
+        CommSubsystem.band(Comm, TransceiverBand::UHF);
+}
+
+private pattern groundStationNetwork(Network : GroundStationNetwork) {
+        GroundStationNetwork(Network);
+}
+
+// Only a Small Satellite can be configured with a Ka-band communication system
+
+@Constraint(severity = "error", key = {Spacecraft},
+        message = "Only a Small Satellite can be configured with a Ka-band communication system.")
+pattern cubeSatWithKaAntenna(Spacecraft : Spacecraft) {
+        CommunicatingElement.commSubsystem.band(Spacecraft, TransceiverBand::Ka);
+        neg find smallSat(Spacecraft);
+}
+
+private pattern smallSat(Sat : SmallSat) {
+        SmallSat(Sat);
+}
diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/runner/SatelliteGeneratorMain.xtend b/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/runner/SatelliteGeneratorMain.xtend
new file mode 100644
index 00000000..592348e8
--- /dev/null
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.satellite/src/hu/bme/mit/inf/dslreasoner/domains/satellite/runner/SatelliteGeneratorMain.xtend
@@ -0,0 +1,13 @@
+package hu.bme.mit.inf.dslreasoner.domains.satellite.runner
+
+import hu.bme.mit.inf.dslreasoner.application.execution.StandaloneScriptExecutor
+
+final class SatelliteGeneratorMain {
+        private new() {
+                throw new IllegalStateException("This is a static utility class and should not be instantiated directly.")
+        }
+        
+        static def void main(String[] args) {
+                println(StandaloneScriptExecutor.executeScript("configs/generation.vsconfig"))
+        }
+}