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Satelit siaran publik menggunakan AWS Ground Station Agen (pita lebar)

Contoh ini dibangun dari analisis yang dilakukan di JPSS-1 - Satelit siaran publik (PBS) - Evaluasi bagian panduan pengguna.

Untuk melengkapi contoh ini, Anda harus mengasumsikan skenario -- Anda ingin menangkap jalur HRD komunikasi sebagai frekuensi menengah digital pita lebar (DiGIF) dan memprosesnya seperti yang diterima oleh Agen AWS Ground Station pada instance EC2 Amazon menggunakan file. SDR

Jalur komunikasi

Bagian ini Langkah 2: Rencanakan jalur komunikasi aliran data Anda mewakili memulai. Untuk contoh ini, Anda akan memerlukan bagian tambahan dalam AWS CloudFormation template Anda yang belum digunakan dalam contoh lain, bagian Pemetaan.

Anda akan mulai dengan menyiapkan bagian Pemetaan di AWS CloudFormation template Anda untuk daftar AWS Ground Station awalan berdasarkan wilayah. Hal ini memungkinkan daftar awalan untuk dengan mudah direferensikan oleh grup keamanan EC2 instans Amazon. Untuk informasi selengkapnya tentang menggunakan daftar awalan, lihatVPCKonfigurasi dengan AWS Ground Station Agen.

Mappings:
  PrefixListId:
    us-east-2:
      groundstation: pl-087f83ba4f34e3bea
    us-west-2:
      groundstation: pl-0cc36273da754ebdc
    us-east-1:
      groundstation: pl-0e5696d987d033653
    eu-central-1:
      groundstation: pl-03743f81267c0a85e
    sa-east-1:
      groundstation: pl-098248765e9effc20
    ap-northeast-2:
      groundstation: pl-059b3e0b02af70e4d
    ap-southeast-1:
      groundstation: pl-0d9b804fe014a6a99
    ap-southeast-2:
      groundstation: pl-08d24302b8c4d2b73
    me-south-1:
      groundstation: pl-02781422c4c792145
    eu-west-1:
      groundstation: pl-03fa6b266557b0d4f
    eu-north-1:
      groundstation: pl-033e44023025215c0
    af-south-1:
      groundstation: pl-0382d923a9d555425
  

Untuk bagian Parameter, Anda akan menambahkan parameter berikut. Anda akan menentukan nilai untuk ini saat membuat tumpukan melalui AWS CloudFormation konsol.

Parameters:
  EC2Key:
    Description: The SSH key used to access the EC2 receiver instance. Choose any SSH key if you are not creating an EC2 receiver instance. For instructions on how to create an SSH key see https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/create-key-pairs.html
    Type: AWS::EC2::KeyPair::KeyName
    ConstraintDescription: must be the name of an existing EC2 KeyPair.

  AZ: 
    Description: "The AvailabilityZone that the resources of this stack will be created in. (e.g. us-east-2a)"
    Type: AWS::EC2::AvailabilityZone::Name

  ReceiverAMI:
    Description: The Ground Station Agent AMI ID you want to use. Please note that AMIs are region specific. For instructions on how to retrieve an AMI see https://docs.aws.amazon.com/ground-station/latest/ug/dataflows.ec2-configuration.html#dataflows.ec2-configuration.amis
    Type: AWS::EC2::Image::Id

Cuplikan template yang tersisa termasuk dalam bagian Resources dari template. AWS CloudFormation

Resources:
  # Resources that you would like to create should be placed within the Resources section.

Mengingat skenario kami untuk mengirimkan jalur komunikasi tunggal ke EC2 instans Amazon, Anda tahu bahwa Anda akan memiliki satu jalur pengiriman sinkron. Per Pengiriman data sinkron bagian, Anda harus menyiapkan dan mengonfigurasi EC2 instans Amazon dengan AWS Ground Station Agen, dan membuat satu atau beberapa grup titik akhir aliran data. Anda akan mulai dengan terlebih dahulu menyiapkan Amazon VPC untuk AWS Ground Station Agen.

  ReceiverVPC:
    Type: AWS::EC2::VPC
    Properties:
      EnableDnsSupport: 'true'
      EnableDnsHostnames: 'true'
      CidrBlock: 10.0.0.0/16
      Tags:
      - Key: "Name"
        Value: "AWS Ground Station Example - PBS to AWS Ground Station Agent VPC"
      - Key: "Description"
        Value: "VPC for EC2 instance receiving AWS Ground Station data"

  PublicSubnet:
    Type: AWS::EC2::Subnet
    Properties:
      VpcId: !Ref ReceiverVPC
      MapPublicIpOnLaunch: 'true'
      AvailabilityZone: !Ref AZ
      CidrBlock: 10.0.0.0/20
      Tags:
      - Key: "Name"
        Value: "AWS Ground Station Example - PBS to AWS Ground Station Agent Public Subnet"
      - Key: "Description"
        Value: "Subnet for EC2 instance receiving AWS Ground Station data"

  RouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref ReceiverVPC
      Tags:
        - Key: Name
          Value: AWS Ground Station Example - RouteTable
  
  RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref RouteTable
      SubnetId: !Ref PublicSubnet

  Route:
    Type: AWS::EC2::Route
    DependsOn: InternetGateway
    Properties:
      RouteTableId: !Ref RouteTable
      DestinationCidrBlock: '0.0.0.0/0'
      GatewayId: !Ref InternetGateway
  
  InternetGateway:
    Type: AWS::EC2::InternetGateway
    Properties:
      Tags:
        - Key: Name
          Value: AWS Ground Station Example - Internet Gateway
    
  GatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref ReceiverVPC
      InternetGatewayId: !Ref InternetGateway

Selanjutnya, Anda akan mengatur EC2 instance Receiver Amazon.

  # The placement group in which your EC2 instance is placed.
  ClusterPlacementGroup:
    Type: AWS::EC2::PlacementGroup
    Properties:
      Strategy: cluster

  # This is required for the EIP if the receiver EC2 instance is in a private subnet.
  # This ENI must exist in a public subnet, be attached to the receiver and be associated with the EIP.
  ReceiverInstanceNetworkInterface:
    Type: AWS::EC2::NetworkInterface
    Properties:
      Description: Floating network interface
      GroupSet:
        - !Ref InstanceSecurityGroup
      SubnetId: !Ref PublicSubnet

  # An EIP providing a fixed IP address for AWS Ground Station to connect to. Attach it to the receiver instance created in the stack.
  ReceiverInstanceElasticIp:
    Type: AWS::EC2::EIP
    Properties:
      Tags:
        - Key: Name
          Value: !Join [ "-" , [ "EIP" , !Ref "AWS::StackName" ] ]

  # Attach the ENI to the EC2 instance if using a separate public subnet.
  # Requires the receiver instance to be in a public subnet (SubnetId should be the id of a public subnet)
  ReceiverNetworkInterfaceAttachment:
    Type: AWS::EC2::NetworkInterfaceAttachment
    Properties:
      DeleteOnTermination: false
      DeviceIndex: 1
      InstanceId: !Ref ReceiverInstance
      NetworkInterfaceId: !Ref ReceiverInstanceNetworkInterface

  # Associate EIP with the ENI if using a separate public subnet for the ENI.
  ReceiverNetworkInterfaceElasticIpAssociation:
    Type: AWS::EC2::EIPAssociation
    Properties:
      AllocationId: !GetAtt [ReceiverInstanceElasticIp, AllocationId]
      NetworkInterfaceId: !Ref ReceiverInstanceNetworkInterface

  # The EC2 instance that will send/receive data to/from your satellite using AWS Ground Station.
  ReceiverInstance:
    Type: AWS::EC2::Instance
    DependsOn: PublicSubnet
    Properties:
      DisableApiTermination: false
      IamInstanceProfile: !Ref GeneralInstanceProfile
      ImageId: !Ref ReceiverAMI
      AvailabilityZone: !Ref AZ
      InstanceType: c5.24xlarge
      KeyName: !Ref EC2Key
      Monitoring: true
      PlacementGroupName: !Ref ClusterPlacementGroup
      SecurityGroupIds:
        - Ref: InstanceSecurityGroup
      SubnetId: !Ref PublicSubnet
      Tags:
        - Key: Name
          Value: !Join [ "-" , [ "Receiver" , !Ref "AWS::StackName" ] ]
      # agentCpuCores list in the AGENT_CONFIG below defines the cores that the AWS Ground Station Agent is allowed to run on. This list can be changed to suit your use-case, however if the agent isn't supplied with enough cores data loss may occur.
      UserData:
        Fn::Base64:
          Fn::Sub:
            - |
              #!/bin/bash
              yum -y update

              AGENT_CONFIG_PATH="/opt/aws/groundstation/etc/aws-gs-agent-config.json"
              cat << AGENT_CONFIG > "$AGENT_CONFIG_PATH"
              {
                "capabilities": [
                  "arn:aws:groundstation:${AWS::Region}:${AWS::AccountId}:dataflow-endpoint-group/${DataflowEndpointGroupId}"
                ],
                "device": {
                  "privateIps": [
                    "127.0.0.1"
                  ],
                  "publicIps": [
                    "${EIP}"
                  ],
                  "agentCpuCores": [
                    24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92
                  ]
                }
              }
              AGENT_CONFIG

              systemctl start aws-groundstation-agent
              systemctl enable aws-groundstation-agent

              # <Tuning Section Start>
              # Visit the AWS Ground Station Agent Documentation in the User Guide for more details and guidance updates

              # Set IRQ affinity with list of CPU cores and Receive Side Scaling mask
              # Core list should be the first two cores (and hyperthreads) on each socket
              # Mask set to everything currently
              # https://github.com/torvalds/linux/blob/v4.11/Documentation/networking/scaling.txt#L80-L96
              echo "@reboot sudo /opt/aws/groundstation/bin/set_irq_affinity.sh '0 1 48 49' 'ffffffff,ffffffff,ffffffff' >>/var/log/user-data.log 2>&1" >>/var/spool/cron/root

              # Reserving the port range defined in the GS agent ingress address in the Dataflow Endpoint Group so the kernel doesn't steal any of them from the GS agent. These ports are the ports that the GS agent will ingress data
              # across, so if the kernel steals one it could cause problems ingressing data onto the instance.
              echo net.ipv4.ip_local_reserved_ports="42000-50000" >> /etc/sysctl.conf

              # </Tuning Section End>

              # We have to reboot for linux kernel settings to apply
              shutdown -r now

            - DataflowEndpointGroupId: !Ref DataflowEndpointGroup
              EIP: !Ref ReceiverInstanceElasticIp

  # The AWS Ground Station Dataflow Endpoint Group that defines the endpoints that AWS Ground
  # Station will use to send/receive data to/from your satellite.
  DataflowEndpointGroup:
    Type: AWS::GroundStation::DataflowEndpointGroup
    Properties:
      ContactPostPassDurationSeconds: 180
      ContactPrePassDurationSeconds: 120
      EndpointDetails:
        - AwsGroundStationAgentEndpoint:
            Name: !Join [ "-" , [ !Ref "AWS::StackName" , "Downlink" ] ] # needs to match DataflowEndpointConfig name
            EgressAddress:
              SocketAddress:
                Name: 127.0.0.1
                Port: 55000
            IngressAddress:
              SocketAddress:
                Name: !Ref ReceiverInstanceElasticIp
                PortRange:
                  Minimum: 42000
                  Maximum: 55000
  

Anda juga memerlukan kebijakan, peran, dan profil yang sesuai AWS Ground Station untuk memungkinkan pembuatan elastic network interface (ENI) di akun Anda.

  # The security group for your EC2 instance.
  InstanceSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: AWS Ground Station receiver instance security group.
      VpcId: !Ref ReceiverVPC
      SecurityGroupEgress:
        - CidrIp: 0.0.0.0/0
          Description: Allow all outbound traffic by default
          IpProtocol: "-1"
      SecurityGroupIngress:
        # To allow SSH access to the instance, add another rule allowing tcp port 22 from your CidrIp
        - IpProtocol: udp
          Description: Allow AWS Ground Station Incoming Dataflows
          ToPort: 50000
          FromPort: 42000
          SourcePrefixListId:
            Fn::FindInMap:
              - PrefixListId
              - Ref: AWS::Region
              - groundstation

   # The EC2 instance assumes this role.
  InstanceRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: "2012-10-17"
        Statement:
          - Effect: "Allow"
            Principal:
              Service:
                - "ec2.amazonaws.com"
            Action:
              - "sts:AssumeRole"
      Path: "/"
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/AmazonS3ReadOnlyAccess
        - arn:aws:iam::aws:policy/service-role/AmazonEC2ContainerServiceforEC2Role
        - arn:aws:iam::aws:policy/CloudWatchAgentServerPolicy
        - arn:aws:iam::aws:policy/service-role/AmazonEC2RoleforSSM
        - arn:aws:iam::aws:policy/AWSGroundStationAgentInstancePolicy
      Policies:
        - PolicyDocument:
            Statement:
              - Action:
                  - sts:AssumeRole
                Effect: Allow
                Resource: !GetAtt GroundStationKmsKeyRole.Arn
            Version: "2012-10-17"
          PolicyName: InstanceGroundStationApiAccessPolicy

  # The instance profile for your EC2 instance.
  GeneralInstanceProfile:
    Type: AWS::IAM::InstanceProfile
    Properties:
      Roles:
        - !Ref InstanceRole

  # The IAM role that AWS Ground Station will assume to access and use the KMS Key for data delivery
  GroundStationKmsKeyRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Statement:
          - Action: sts:AssumeRole
            Effect: Allow
            Principal:
              Service:
                - groundstation.amazonaws.com
            Condition:
              StringEquals:
                "aws:SourceAccount": !Ref AWS::AccountId
              ArnLike:
                "aws:SourceArn": !Sub "arn:${AWS::Partition}:groundstation:${AWS::Region}:${AWS::AccountId}:mission-profile/*"
          - Action: sts:AssumeRole
            Effect: Allow
            Principal:
              AWS: !Sub "arn:${AWS::Partition}:iam::${AWS::AccountId}:root"

  GroundStationKmsKeyAccessPolicy:
    Type: AWS::IAM::Policy
    Properties:
      PolicyDocument:
        Statement:
          - Action:
              - kms:Decrypt
            Effect: Allow
            Resource: !GetAtt GroundStationDataDeliveryKmsKey.Arn
      PolicyName: GroundStationKmsKeyAccessPolicy
      Roles:
        - Ref: GroundStationKmsKeyRole

  GroundStationDataDeliveryKmsKey:
    Type: AWS::KMS::Key
    Properties:
      KeyPolicy:
        Statement:
          - Action:
              - kms:CreateAlias
              - kms:Describe*
              - kms:Enable*
              - kms:List*
              - kms:Put*
              - kms:Update*
              - kms:Revoke*
              - kms:Disable*
              - kms:Get*
              - kms:Delete*
              - kms:ScheduleKeyDeletion
              - kms:CancelKeyDeletion
              - kms:GenerateDataKey
              - kms:TagResource
              - kms:UntagResource
            Effect: Allow
            Principal:
              AWS: !Sub "arn:${AWS::Partition}:iam::${AWS::AccountId}:root"
            Resource: "*"
          - Action:
              - kms:Decrypt
              - kms:GenerateDataKeyWithoutPlaintext
            Effect: Allow
            Principal:
              AWS: !GetAtt GroundStationKmsKeyRole.Arn
            Resource: "*"
            Condition:
              StringEquals:
                "kms:EncryptionContext:sourceAccount": !Ref AWS::AccountId
              ArnLike:
                "kms:EncryptionContext:sourceArn": !Sub "arn:${AWS::Partition}:groundstation:${AWS::Region}:${AWS::AccountId}:mission-profile/*"
          - Action:
              - kms:CreateGrant
            Effect: Allow
            Principal:
              AWS: !Sub "arn:${AWS::Partition}:iam::${AWS::AccountId}:root"
            Resource: "*"
            Condition:
              ForAllValues:StringEquals:
                "kms:GrantOperations":
                  - Decrypt
                  - GenerateDataKeyWithoutPlaintext
                "kms:EncryptionContextKeys":
                  - sourceArn
                  - sourceAccount
              ArnLike:
                "kms:EncryptionContext:sourceArn": !Sub "arn:${AWS::Partition}:groundstation:${AWS::Region}:${AWS::AccountId}:mission-profile/*"
              StringEquals:
                "kms:EncryptionContext:sourceAccount": !Ref AWS::AccountId
        Version: "2012-10-17"
      EnableKeyRotation: true
  

AWS Ground Station konfigurasi

Bagian ini Langkah 3: Buat konfigurasi mewakili memulai.

Anda memerlukan konfigurasi pelacakan untuk mengatur preferensi Anda menggunakan autotrack. Memilih PREFERREDsebagai autotrack dapat meningkatkan kualitas sinyal, tetapi tidak diperlukan untuk memenuhi kualitas sinyal karena kualitas JPSS -1 ephemeris yang memadai.

  TrackingConfig:
    Type: AWS::GroundStation::Config
    Properties:
      Name: "JPSS Tracking Config"
      ConfigData:
        TrackingConfig:
          Autotrack: "PREFERRED"
  

Berdasarkan jalur komunikasi, Anda harus menentukan konfigurasi antenna-downlink untuk mewakili bagian satelit, serta konfigurasi dataflow-endpoint untuk merujuk ke grup titik akhir aliran data yang mendefinisikan detail titik akhir.

  # The AWS Ground Station Antenna Downlink Config that defines the frequency spectrum used to
  # downlink data from your satellite.
  SnppJpssDownlinkDigIfAntennaConfig:
    Type: AWS::GroundStation::Config
    Properties:
      Name: "SNPP JPSS Downlink WBDigIF Antenna Config"
      ConfigData:
        AntennaDownlinkConfig:
          SpectrumConfig:
            Bandwidth:
              Units: "MHz"
              Value: 100
            CenterFrequency:
              Units: "MHz"
              Value: 7812
            Polarization: "RIGHT_HAND"

  # The AWS Ground Station Dataflow Endpoint Config that defines the endpoint used to downlink data
  # from your satellite.
  DownlinkDigIfEndpointConfig:
    Type: AWS::GroundStation::Config
    Properties:
      Name: "Aqua SNPP JPSS Terra Downlink DigIF Endpoint Config"
      ConfigData:
        DataflowEndpointConfig:
          DataflowEndpointName: !Join [ "-" , [ !Ref "AWS::StackName" , "Downlink" ] ]
          DataflowEndpointRegion: !Ref AWS::Region
  

AWS Ground Station profil misi

Bagian ini Langkah 4: Buat profil misi mewakili memulai.

Sekarang setelah Anda memiliki konfigurasi terkait, Anda dapat menggunakannya untuk membangun aliran data. Anda akan menggunakan default untuk parameter yang tersisa.

  # The AWS Ground Station Mission Profile that groups the above configurations to define how to
  # uplink and downlink data to your satellite.
  SnppJpssMissionProfile:
    Type: AWS::GroundStation::MissionProfile
    Properties:
      Name: !Sub 'JPSS WBDigIF gs-agent EC2 Delivery'
      ContactPrePassDurationSeconds: 120
      ContactPostPassDurationSeconds: 120
      MinimumViableContactDurationSeconds: 180
      TrackingConfigArn: !Ref TrackingConfig
      DataflowEdges:
        - Source: !Ref SnppJpssDownlinkDigIfAntennaConfig
          Destination: !Ref DownlinkDigIfEndpointConfig
      StreamsKmsKey:
        KmsKeyArn: !GetAtt GroundStationDataDeliveryKmsKey.Arn
      StreamsKmsRole: !GetAtt GroundStationKmsKeyRole.Arn
  

Menyatukannya

Dengan sumber daya di atas, Anda sekarang memiliki kemampuan untuk menjadwalkan JPSS -1 kontak untuk pengiriman data sinkron dari salah satu AWS Ground Station Lokasi onboard Anda.

Berikut ini adalah AWS CloudFormation template lengkap yang mencakup semua sumber daya yang dijelaskan dalam bagian ini digabungkan menjadi satu template yang dapat langsung digunakan AWS CloudFormation.

AWS CloudFormation Template bernama DirectBroadcastSatelliteWbDigIfEc2DataDelivery.yml dirancang untuk memberi Anda akses cepat untuk mulai menerima data frekuensi menengah digital (DiGIF) untuk satelit Aqua,, JPSS -1/ NOAA -20SNPP, dan Terra. Ini berisi EC2 instans Amazon dan AWS CloudFormation sumber daya yang diperlukan untuk menerima data siaran langsung DiGIF mentah menggunakan AWS Ground Station Agen.

Jika Aqua,SNPP, JPSS -1/ NOAA -20, dan Terra tidak terhubung ke akun Anda, lihat. Langkah 1: Orientasi satelit

Untuk mengunduh templat menggunakan AWS CLI, gunakan perintah berikut:

aws s3 cp s3://groundstation-cloudformation-templates-us-west-2/agent/ec2_delivery/DirectBroadcastSatelliteWbDigIfEc2DataDelivery.yml .

Anda dapat melihat dan mengunduh templat di konsol dengan menavigasi ke yang berikut URL di browser Anda:

https://s3.console.aws.amazon.com/s3/object/groundstation-cloudformation-templates-us-west-2/agent/ec2_delivery/DirectBroadcastSatelliteWbDigIfEc2DataDelivery.yml

Anda dapat menentukan template secara langsung AWS CloudFormation menggunakan link berikut:

https://groundstation-cloudformation-templates-us-west-2.s3.us-west-2.amazonaws.com/agent/ec2_delivery/DirectBroadcastSatelliteWbDigIfEc2DataDelivery.yml

Sumber daya tambahan apa yang ditentukan oleh template?

DirectBroadcastSatelliteWbDigIfEc2DataDeliveryTemplate mencakup sumber daya tambahan berikut:

Nilai dan parameter untuk satelit dalam template ini sudah terisi. Parameter ini memudahkan Anda untuk AWS Ground Station segera menggunakannya dengan satelit ini. Anda tidak perlu mengkonfigurasi nilai Anda sendiri untuk digunakan AWS Ground Station saat menggunakan template ini. Namun, Anda dapat menyesuaikan nilai untuk membuat template berfungsi untuk kasus penggunaan Anda.

Di mana saya menerima data saya?

Grup titik akhir aliran data diatur untuk menggunakan antarmuka jaringan instance penerima yang dibuat oleh bagian dari template. Instance penerima menggunakan AWS Ground Station Agen untuk menerima aliran data dari AWS Ground Station port yang ditentukan oleh titik akhir aliran data. Untuk informasi selengkapnya tentang menyiapkan grup titik akhir aliran data, lihat Grup. AWS::GroundStation::DataflowEndpoint Untuk informasi lebih lanjut tentang AWS Ground Station Agen, lihat Apa itu AWS Ground Station Agen?