Downlink(CW)
ModeCW
Spacecraft

Antenna Type
Monopole
Orbit Altitude
400 [km]
Antenna
Maximum Transmission Distance1430.51 [km]Elevation Angle
10 [deg]Spacecraft Transmitter Power Output
0.1 [watts]
Downlink Frequency
437.5 [MHz]Spacecraft Total Transmission Line Losses
1.6 [dB]
Spacecraft Antenna Gain
2.0 [dBi]
Spacecraft EIRP
-9.6 [dBW]
Downlink PathSpacecraft Antenna Pointing Loss
0.0 [dB]
S/C-to-Ground Antenna Polarization Loss
0.5 [dB]
Path Loss
148.4 [dB]Atmospheric Loss
1.1 [dB]
Ionospheric Loss
0.8 [dB]
Rain Loss0.0 [dB]
Isotropic Signal Level at Ground Station-155.6 [dBW]
Ground Station(EbNo Method)
Ground Station Antenna Pointing Loss
0.2 [dB]
Ground Station Antenna Gain
18 [dBi]
Ground Station Total Transmission Line Losses
1.9 [dB]
Ground Station Effective Noise Temperature
490 [K]
Ground Station Figure of Merit(G/T)-7.0 [dB/K]
G.S. Signal-to-Noise Power Density(S/No)
66.2 [dBHz]
System Desired Data Rate
100 [bps]
Telemetry System Eb/No for the Downlink
46.2 [dB]
Demodulation Method SelectedCW
Forward Error Correction Coding Used
None
System Allowed or Specified Bit-Error-Rate
Demodulator Implementation Loss
1 [dB]
Telemetry System Required Eb/No
16.0 [dB]
Eb/No Threshold
15.0 [dB]
System Link Margin30.2 [dB]
Ground Station Alternative Signal Analysis Method (SNR Computation)
Ground Station Antenna Pointing Loss
0.2 [dB]
Ground Station Antenna Gain
18 [dBi]
Ground Station Total Transmission Line Losses
1.9 [dB]
Ground Station Effective Noise Temperature
490 [K]
Ground Station Figure of Merit(G/T)-7.0 [dB/K]
Signal Power at Ground Station LNA Input-135.5 [dBW]
Ground Station Receiver Bandwidth(B)
3 [kHz]
G.S. Receiver Noise Power(Pn=kTB)-166.9 [dBW]
Signal-to-Noise Power Ratio at G.S. Rcvr
31.5 [dB]
Analog or Digital System Required S/N
16.0 [dB]
System Link Margin
15.5 [dB]Downlink(FM)ModeFM
Spacecraft

Antenna Type
Monopole
Monopole
Orbit Altitude
400[km]400[km]Antenna
Antenna
Maximum Transmission Distance1430.51 [km]1430.51 [km]Elevation Angle
10 [deg]
10 [deg]Spacecraft Transmitter Power Output
0.8 [watts]
0.8 [watts]
Downlink Frequency
437.5 [MHz]437.5 [MHz]Spacecraft Total Transmission Line Losses
1.6 [dB]
1.6 [dB]
Spacecraft Antenna Gain
2.0 [dBi]
2.0 [dBi]
Spacecraft EIRP
-0.6 [dBW]-0.6 [dBW]
Downlink PathSpacecraft Antenna Pointing Loss
0.0 [dB]
0.0 [dB]
S/C-to-Ground Antenna Polarization Loss
0.5 [dB]
0.5 [dB]
Path Loss
148.4 [dB]148.4 [dB]Atmospheric Loss
1.1 [dB]
1.1 [dB]
Ionospheric Loss
0.8 [dB]
0.8 [dB]
Rain Loss
0.0 [dB]
0.0 [dB]
Isotropic Signal Level at Ground Station-146.5 [dBW]-146.5 [dBW]
Ground Station(EbNo Method)
Ground Station Antenna Pointing Loss
0.2 [dB]
0.2 [dB]
Ground Station Antenna Gain
18 [dBi]18 [dBi]
Ground Station Total Transmission Line Losses
1.9 [dB]
1.9 [dB]
Ground Station Effective Noise Temperature
490 [K]490 [K]
Ground Station Figure of Merit(G/T)-7.0 [dB/K]-7.0 [dB/K]
G.S. Signal-to-Noise Power Density(S/No)
66.2 [dBHz]
66.2 [dBHz]
System Desired Data Rate
1200 [bps]9600 [bps]Telemetry System Eb/No for the Downlink
44.5 [dB]35.5 [dB]
Demodulation Method Selected
AFSK/FMFSK(GMSK)Forward Error Correction Coding Used
None
System Allowed or Specified Bit-Error-Rate
0.00001
0.00001
Demodulator Implementation Loss
1 [dB]
1 [dB]
Telemetry System Required Eb/No
23.2 [dB]23.2 [dB]
Eb/No Threshold
24.2 [dB]24.2 [dB]
System Link Margin20.3 [dB]11.3 [dB]
Ground Station Alternative Signal Analysis Method (SNR Computation)
Ground Station Antenna Pointing Loss
0.2 [dB]
0.2 [dB]
Ground Station Antenna Gain
18 [dBi]18 [dBi]
Ground Station Total Transmission Line Losses
1.9 [dB]
1.9 [dB]
Ground Station Effective Noise Temperature
490 [K]490 [K]
Ground Station Figure of Merit(G/T)-7.0 [dB/K]-7.0 [dB/K]
Signal Power at Ground Station LNA Input
126.4 [dBW]-126.4 [dBW]
Ground Station Receiver Bandwidth(B)
16 [kHz]10 [kHz]
G.S. Receiver Noise Power(Pn=kTB)-159.7 [dBW]-161.7 [dBW]
Signal-to-Noise Power Ratio at G.S. Rcvr
35.3 [dB]33.2 [dB]
Analog or Digital System Required S/N
23.2 [dB]23.2 [dB]
System Link Margin12.1 [dB]10.0 [dB]Uplink
Ground Station
Antenna Type
Cross Yagi Antenna 2 stackGround Station Latitude
34.725[deg]Antenna
Ground Station Longitude
137.725 [deg]Elevation Angle
10 [deg]
Ground Station Transmitter Power Output
50 [watts]
Uplink Frequency
435.5 [MHz]Ground Stn. Transmission Line Losses
3.6 [dB]
Antenna Gain
16.0 [dBi]
Ground Station EIRP
29.4 [dBW]
Uplink Path
Ground Station Antenna Pointing Loss
0.1 [dB]
Gnd-to-S/C Antenna Polarization Loss
0.5 [dB]
Path Loss
148.4 [dB]Atmospheric Loss
1.1 [dB]
Ionospheric Loss
0.7 [dB]
Rain Loss
0 [dB]
Isotropic Signal Level at Spacecraft-116.6 [dBW]Spacecraft (EbNo Method)
Spacecraft Antenna Pointing Loss
4.7 [dB]
Spacecraft Antenna Gain
2 [dBi]Spacecraft Total Transmission Line Losses
2 [dB]Spacecraft Effective Noise Temperature
220 [K]Spacecraft Figure of Merit(G/T)-19.4 [dB/K]
S/C. Signal-to-Noise Power Density(S/No)
97.3 [dBHz]
System Desired Data Rate
1200 [bps]Command System Eb/No
66.5 [dB]
Demodulation Method Selected
AFSK/FM
Forward Error Correction Coding Used
None
System Allowed or Specified Bit-Error-Rate
0.00001
Demodulator Implementation Loss
1.0 [dB]
Telemetry System Required Eb/No
10.5 [dB]
Eb/No Threshold
11.5 [dB]
System Link Margin
56.0 [dB]Spacectraft Alternative Signal Analysis Method (SNR Computation)
Spacecraft Antenna Pointing Loss
4.7 [dB]
Spacecraft Antenna Gain
2.0 [dBi]
Spacecraft Total Transmission Line Losses
2.0 [dB]
Spacecraft Effective Noise Temperature
220 [K]Spacecraft Figure of Merit(G/T)-19.4 [dB/K]
Signal Power at Spacecraft LNA Input-107.9 [dBW]Spacecraft Receiver Bandwidth(B)
10 [kHz]
Spacecraft Receiver Noise Power(Pn=kTB)-165.2 [dBW]
Signal-to-Noise Power Ratio at G.S. Rcvr
57.3 [dB]
Analog or Digital System Required S/N
10.5 [dB]
System Link Margin46.8 [dB]