Downlink
ModeFMCWSpacecraft
Antenna Type
MonopoleMonopole
Orbit Altitude
375[km]375[km]Antenna
Antenna
Maximum Transmission Distance1372.55 [km]1372.55 [km]Elevation Angle
10 [deg]
10 [deg]Spacecraft Transmitter Power Output
0.8 [watts]
0.1 [watts]
Downlink Frequency
437.6 [MHz]437.6 [MHz]Spacecraft Total Transmission Line Losses
1.6 [dB]
1.6 [dB]
Spacecraft Antenna Gain
4.8 [dBi]
4.8 [dBi]
Spacecraft EIRP
2.2 [dBW]-6.8 [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 Loss148 [dB]
148.0 [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-148.2 [dBW]-157.2 [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)-10.8 [dB/K]-10.8 [dB/K]
G.S. Signal-to-Noise Power Density(S/No)
69.4 [dBHz]
60.4 [dBHz]
System Desired Data Rate
1200 [bps][bps]Telemetry System Eb/No for the Downlink
38.6 [dB][dB]
Demodulation Method Selected
AFSK/FMCW
Forward Error Correction Coding Used
None
System Allowed or Specified Bit-Error-Rate
0.00001
Demodulator Implementation Loss
0 [dB][dB]
Telemetry System Required Eb/No
23.2 [dB][dB]
Eb/No Threshold23.2 [dB][dB]
System Link Margin15.4 [dB][dB]
Ground Station Alternative Signal Analysis Method (SNR Computation)
Ground Station Antenna Pointing Loss
0.2 [dB][dB]
Ground Station Antenna Gain
18 [dBi][dBi]
Ground Station Total Transmission Line Losses
1.9 [dB][dB]
Ground Station Effective Noise Temperature
490 [K][K]
Ground Station Figure of Merit(G/T)-10.8 [dB/K][dB/K]
Signal Power at Ground Station LNA Input-132.3 [dBW][dBW]
Ground Station Receiver Bandwidth(B)
0.5 [kHz][kHz]
G.S. Receiver Noise Power(Pn=kTB)-161.7 [dBW][dBW]
Signal-to-Noise Power Ratio at G.S. Rcvr
29.9 [dB][dB]
Analog or Digital System Required S/N
23.2 [dB][dB]
System Link Margin
6.7 [dB][dB]

Uplink
Ground Station
Antenna Type
Cross Yagi Antenna 2 stack
Ground 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
145.8 [MHz]Ground Stn. Transmission Line Losses
3.6 [dB]
Antenna Gain
16 [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
138.5 [dB]Atmospheric Loss
1.1 [dB]
Ionospheric Loss
0.7 [dB]
Rain Loss
0 [dB]
Isotropic Signal Level at Spacecraft-111.5 [dBW]Spacecraft (EbNo Method)
Spacecraft Antenna Pointing Loss
0 [dB]Spacecraft Antenna Gain
4.8 [dBi]
Spacecraft Total Transmission Line Losses
2 [dB]Spacecraft Effective Noise Temperature
220 [K]Spacecraft Figure of Merit(G/T)-20.6 [dB/K]
S/C. Signal-to-Noise Power Density(S/No)
96.5 [dBHz]
System Desired Data Rate
1200 [bps]Command System Eb/No
65.7 [dB]
Demodulation Method Selected
AFSK/FM
Forward Error Correction Coding Used
None
System Allowed or Specified Bit-Error-Rate
0.00001
Demodulator Implementation Loss
0 [dB]
Telemetry System Required Eb/No
23.2 [dB]
Eb/No Threshold23.2 [dB]
System Link Margin42.5 [dB]Spacectraft Alternative Signal Analysis Method (SNR Computation)
Spacecraft Antenna Pointing Loss
0 [dB]Spacecraft Antenna Gain
4.8 [dBi]
Spacecraft Total Transmission Line Losses
2 [dB]Spacecraft Effective Noise Temperature
220 [K]Spacecraft Figure of Merit(G/T)-20.6 [dB/K]
Signal Power at Spacecraft LNA Input-108.6 [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
56.5 [dB]
Analog or Digital System Required S/N
23.2 [dB]
System Link Margin33.3 [dB]