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    STRX XTX: Block Diagram of Communication Between The Satellite and The Ground Station

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    letiendung_dtvt7119
    The document provides details on the communication systems for a satellite and ground station. It includes: - Block diagrams of the S-band and X-band communication systems between the satellite and ground station for telemetry downlink, command uplink, and mission data downlink. - Performance specifications for the S-band and X-band systems including transmit power, data rates, antenna details, and link budgets calculating maximum distance based on various channel parameters. - Technical specifications for the ground station antennas including focal length, accuracy, range of motion, and position accuracy.

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    Download as PDF, TXT or read online from Scribd

    STRX XTX: Block Diagram of Communication Between The Satellite and The Ground Station

    Uploaded by

    letiendung_dtvt7119
    66 views5 pages
    The document provides details on the communication systems for a satellite and ground station. It includes: - Block diagrams of the S-band and X-band communication systems between the satellite and ground station for telemetry downlink, command uplink, and mission data downlink. - Performance specifications for the S-band and X-band systems including transmit power, data rates, antenna details, and link budgets calculating maximum distance based on various channel parameters. - Technical specifications for the ground station antennas including focal length, accuracy, range of motion, and position accuracy.

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    The document provides details on the communication systems for a satellite and ground station. It includes: - Block diagrams of the S-band and X-band communication systems between the satellite and ground station for telemetry downlink, command uplink, and mission data downlink. - Performance specifications for the S-band and X-band systems including transmit power, data rates, antenna details, and link budgets calculating maximum distance based on various channel parameters. - Technical specifications for the ground station antennas including focal length, accuracy, range of motion, and position accuracy.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    66 views5 pages

    STRX XTX: Block Diagram of Communication Between The Satellite and The Ground Station

    Uploaded by

    letiendung_dtvt7119
    The document provides details on the communication systems for a satellite and ground station. It includes: - Block diagrams of the S-band and X-band communication systems between the satellite and ground station for telemetry downlink, command uplink, and mission data downlink. - Performance specifications for the S-band and X-band systems including transmit power, data rates, antenna details, and link budgets calculating maximum distance based on various channel parameters. - Technical specifications for the ground station antennas including focal length, accuracy, range of motion, and position accuracy.

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    STRX

    XTX

    DIP

    S-band Telemetry
    Downlink

    S-band Uplink
    Command

    S-band Parabola
    Antenna

    X-band Mision
    Downlink

    X-band Parabola
    Antenna

    DOWN
    CONVERTER

    UP
    CONVERTER

    DOWN
    CONVERTER

    DEMODULATION

    MODULATION

    DEMODULATION

    SERVER

    TLM/CMD

    SERVER

    L0 PC

    L1 PC

    Block Diagram of Communication between the satellite and the ground station

    3m S-BAND
    ANTENNA

    (Sensor)

    12m X-BAND
    ANTENNA

    ENCODER

    MOTOR

    (Actuator)

    (Sensor)

    ENCODER

    CONTROLLER

    MOTOR

    CONTROLLER

    ORBIT CALCULATION
    PC

    TLE from NORAD


    The Antennas of Ground Station

    (Actuator)

    MOTOR-A

    MOTOR-E

    ENCOD-A

    ENCOD-E

    MOTOR
    DRIVER

    MOTOR
    DRIVER

    DATA
    RELAY

    DATA
    RELAY

    RS232C

    TRANCEIVER

    RECEIVER

    CONTROLLER
    PULSE

    ORBIT
    CALCULATION

    2nd PC

    1ST PC

    PULSE COUNTER

    CLOCK

    NTP
    SERVER

    Detailed Block Diagram

    1. Performance summary
    - Command (S-band from the Ground Station to the satellite)
    Transmit Power (W)
    Speed (Kbps)

    20/100*
    *: Emergency Case
    4

    - Telemetry (S-band from the satellite to the Ground Station)


    Transmit Power (W)
    (On-board)
    Speed (Kbps)

    0.2
    4/32/64
    4 Kbps: Emergency Case
    64 Kbps: Normal Use

    - Data Downlink
    Transmit Power (W)
    (On-board)
    Speed (Mbps)

    2
    1.25/2.5/5/10

    - Antenna Performance
    Focal Length (m)
    Mirror Accuracy
    Mount Method

    3m Antenna
    1.2
    ~ 13 GHz
    Altitude Azimuth Mount

    12m Antenna
    5
    ~ 6 GHz
    Altitude Azimuth Mount

    GPS

    Az: 280o
    El: 0 ~ 90o
    0.035o
    El 88o

    Range (degree)
    Position Accuracy (degree)
    Vertical Problem

    Az: 280o
    El: 0 ~ 90o
    0.02o
    El 77o

    2. Link budget
    - Link budget for X-band downlink
    Unit
    MHz
    dBW
    dBW
    dB
    dBi
    dB

    Frequency
    EIRP
    Transmit Power
    Transmit Loss
    Transmit Antenna Gain
    Space Loss
    Maximum Distance (km)
    Atmospheric Loss
    Rain Attenuation Loss
    G/T
    Receive Antenna Gain
    Receiver Loss

    8055
    6.64
    3.01
    -2
    5.63

    1460.21
    dB
    dB
    dB/K
    dBi
    dB
    dB
    dBK
    dBHz
    dB
    dBHz
    dBHz
    dB
    dB

    System Noise Temperature


    C/N0
    Required Eb/N0
    Bit rate
    Required C/N0
    Hardware loss
    Link Margin

    -173.86
    -0.5
    -0.61
    24.37
    50.64
    -0.5
    -1.00
    -24.77
    84.64
    3.2
    70
    -73.2
    -1.5
    9.94

    Wavelength (m)

    0.04

    300

    BER: 10^(-6)
    10 Mbps

    - Link budget for S-band downlink


    Unit
    Frequency
    EIRP
    Transmit Power
    Transmit Loss
    Transmit Antenna Gain
    Space Loss
    Maximum Distance (km)
    Atmospheric Loss
    Rain Attenuation Loss
    G/T
    Receive Antenna Gain

    MHz
    dBW
    dBW
    dB
    dBi
    dB
    2396.11
    dB
    dB
    dB/K
    dBi

    2228
    -8.99
    -6.99
    -4
    2
    -167.00
    -0.5
    -0.61
    7.66
    33.43

    Wavelength
    (m)

    0.13

    0.2

    Efficiency

    45%

    Receiver Loss

    dB
    dB
    dBK
    dBHz
    dB
    dBHz
    dBHz
    dB
    dB

    System Noise Temperature


    C/N0 (2396.11 km)
    Required Eb/N0
    Bit rate
    Required C/N0
    Hardware loss
    Link Margin

    -0.5
    -0.50
    -24.77
    59.16
    3.2
    48.06
    -51.26
    -1.5
    6.40

    300

    -203.83

    BER: 10^(-5)
    64 Kbps

    - Link budget for S-band downlink


    Unit
    Frequency
    EIRP
    Transmit Power
    Transmit Loss
    Transmit Antenna Gain
    Space Loss
    Maximum Distance (km)
    Atmospheric Loss
    Rain Attenuation Loss
    G/T
    Receive Antenna Gain
    Receiver Loss
    System Noise Temperature
    C/N0 (2396.11 km)
    Required Eb/N0
    Bit rate
    Required C/N0
    Hardware loss
    Link Margin

    MHz
    dBW
    dBW
    dB
    dBi
    dB
    2396.11
    dB
    dB
    dB/K
    dBi
    dB
    dB
    dBK
    dBHz
    dB
    dBHz
    dBHz
    dB
    dB

    2228
    -9.99
    -6.99
    -5
    2
    -167.00
    -0.5
    -0.61
    4.64
    33.43
    -0.5
    -2.50
    -25.80
    55.14
    6
    48.06
    -54.06
    -1.5
    -0.42

    Wavelength
    (m)

    0.13

    0.2

    Efficiency

    45%

    380

    BER: 10^(-5)
    64 Kbps

    -202.80

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