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Photon-Counting SNR versus Optical BandwidthRadobs 41
===================================================================== | AMATEUR OPTICAL SETI | Symphony File: 9106-003.WR1 | | SNR Versus Optical Bandwidth | Scenario -----> Night Sky | |--------------------------------------|-----------------------------| | | Range B | | FIBERDYNE OPTOELECTRONICS | | | Copyright (c), 1991 | Photon | | | Counting | |======================================|=============================| | ETI Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Wavelength, nm | 656.0 | | Signal Intensity, W/m^2 | 1.00E-12 | | Star Temperature, K | 5,778 | | Range, L.Y. | 1.00E+01 | |--------------------------------------|-----------------------------| | Receiver Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Diameter, m | 0.30 | | Atmospheric Transmission | 0.40 | | Antenna Efficiency | 0.70 | | Spectrometer Efficiency | 0.50 | | Optical Quantum Efficiency | 0.50 | | Heterodyning/Homodyning Efficiency | NA | | Local Oscillator Power, W | NA | | Polarizations | 1 | | Planckian/Fraunhofer Suppression, dB | 0.0 | | Sky Radiance, W/m^2.sr.nm | 0.00E+00 | | Electrical Bandwidth, Hz | 1.00E+00 | | Front-End Temperature, K | 300.0 | | Front-End Noise Figure, dB | 6.0 | | Photodetector Load, Ohms | 1.00E+04 | | Avalanche Gain | 100.0 | | Excess Avalanche Noise Factor | 0.00 | | Dark Bulk Current, nA | 0.00E+00 | |--------------------------------------|-----------------------------| | Frequency, Hz | 4.57E+14 | | Signal Magnitude | 11.0 | | Apparent Stellar Magnitude | 2.2 | | Contrast Ratio | 6.38E-03 | | Signal, dBW | -140.0 | | Planckian, W/m^2.Hz | 5.47E-24 | | Daylight Per Pixel, W/m^2.Hz | 0.00E+00 | | Responsivity, mA/mW | 0.26 | | Effective Noise Temperature, K | 43,942 | |--------------------------------------|-----------------------------| | Graphing Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Lowest Optical Bandwidth, Hz | | | Log. Bandwidth Increment | | |======================================|=============================| | Optical Bandwidth, Hz | Background, W | SNR, dB | |--------------------------------------|---------------|-------------| | 1.00E+00 | 5.41E-26 | 39.12 | | 3.16E+00 | 1.71E-25 | 39.12 | | 1.00E+01 | 5.41E-25 | 39.12 | | 3.16E+01 | 1.71E-24 | 39.12 | | 1.00E+02 | 5.41E-24 | 39.12 | | 3.16E+02 | 1.71E-23 | 39.12 | | 1.00E+03 | 5.41E-23 | 39.12 | | 3.16E+03 | 1.71E-22 | 39.12 | | 1.00E+04 | 5.41E-22 | 39.12 | | 3.16E+04 | 1.71E-21 | 39.12 | | 1.00E+05 | 5.41E-21 | 39.12 | | 3.16E+05 | 1.71E-20 | 39.12 | | 1.00E+06 | 5.41E-20 | 39.12 | | 3.16E+06 | 1.71E-19 | 39.12 | | 1.00E+07 | 5.41E-19 | 39.12 | | 3.16E+07 | 1.71E-18 | 39.12 | | 1.00E+08 | 5.41E-18 | 39.11 | | 3.16E+08 | 1.71E-17 | 39.11 | | 1.00E+09 | 5.41E-17 | 39.09 | | 3.16E+09 | 1.71E-16 | 39.04 | | 1.00E+10 | 5.41E-16 | 38.89 | | 3.16E+10 | 1.71E-15 | 38.42 | | 1.00E+11 | 5.41E-15 | 37.22 | | 3.16E+11 | 1.71E-14 | 34.76 | | 1.00E+12 | 5.41E-14 | 31.01 | ===================================================================== ===================================================================== | AMATEUR OPTICAL SETI | Symphony File: 9106-003.WR1 | | SNR Versus Optical Bandwidth | Scenario -----> Night Sky | |--------------------------------------|-----------------------------| | | Range C | | FIBERDYNE OPTOELECTRONICS | | | Copyright (c), 1991 | Photon | | | Counting | |======================================|=============================| | ETI Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Wavelength, nm | 656.0 | | Signal Intensity, W/m^2 | 1.00E-14 | | Star Temperature, K | 5,778 | | Range, L.Y. | 1.00E+01 | |--------------------------------------|-----------------------------| | Receiver Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Diameter, m | 0.30 | | Atmospheric Transmission | 0.40 | | Antenna Efficiency | 0.70 | | Spectrometer Efficiency | 0.50 | | Optical Quantum Efficiency | 0.50 | | Heterodyning/Homodyning Efficiency | NA | | Local Oscillator Power, W | NA | | Polarizations | 1 | | Planckian/Fraunhofer Suppression, dB | 0.0 | | Sky Radiance, W/m^2.sr.nm | 0.00E+00 | | Electrical Bandwidth, Hz | 1.00E+00 | | Front-End Temperature, K | 300.0 | | Front-End Noise Figure, dB | 6.0 | | Photodetector Load, Ohms | 1.00E+04 | | Avalanche Gain | 100.0 | | Excess Avalanche Noise Factor | 0.00 | | Dark Bulk Current, nA | 0.00E+00 | |--------------------------------------|-----------------------------| | Frequency, Hz | 4.57E+14 | | Signal Magnitude | 16.0 | | Apparent Stellar Magnitude | 2.2 | | Contrast Ratio | 6.38E-05 | | Signal, dBW | -160.0 | | Planckian, W/m^2.Hz | 5.47E-24 | | Daylight Per Pixel, W/m^2.Hz | 0.00E+00 | | Responsivity, mA/mW | 0.26 | | Effective Noise Temperature, K | 43,942 | |--------------------------------------|-----------------------------| | Graphing Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Lowest Optical Bandwidth, Hz | | | Log. Bandwidth Increment | | |======================================|=============================| | Optical Bandwidth, Hz | Background, W | SNR, dB | |--------------------------------------|---------------|-------------| | 1.00E+00 | 5.41E-26 | 19.12 | | 3.16E+00 | 1.71E-25 | 19.12 | | 1.00E+01 | 5.41E-25 | 19.12 | | 3.16E+01 | 1.71E-24 | 19.12 | | 1.00E+02 | 5.41E-24 | 19.12 | | 3.16E+02 | 1.71E-23 | 19.12 | | 1.00E+03 | 5.41E-23 | 19.12 | | 3.16E+03 | 1.71E-22 | 19.12 | | 1.00E+04 | 5.41E-22 | 19.12 | | 3.16E+04 | 1.71E-21 | 19.12 | | 1.00E+05 | 5.41E-21 | 19.12 | | 3.16E+05 | 1.71E-20 | 19.12 | | 1.00E+06 | 5.41E-20 | 19.11 | | 3.16E+06 | 1.71E-19 | 19.11 | | 1.00E+07 | 5.41E-19 | 19.09 | | 3.16E+07 | 1.71E-18 | 19.04 | | 1.00E+08 | 5.41E-18 | 18.89 | | 3.16E+08 | 1.71E-17 | 18.42 | | 1.00E+09 | 5.41E-17 | 17.22 | | 3.16E+09 | 1.71E-16 | 14.76 | | 1.00E+10 | 5.41E-16 | 11.01 | | 3.16E+10 | 1.71E-15 | 6.49 | | 1.00E+11 | 5.41E-15 | 1.66 | | 3.16E+11 | 1.71E-14 | -3.29 | | 1.00E+12 | 5.41E-14 | -8.27 | ===================================================================== ===================================================================== | AMATEUR OPTICAL SETI | Symphony File: 9106-003.WR1 | | SNR Versus Optical Bandwidth | Scenario -----> Day Sky | |--------------------------------------|-----------------------------| | | Range D | | FIBERDYNE OPTOELECTRONICS | | | Copyright (c), 1991 | Photon | | | Counting | |======================================|=============================| | ETI Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Wavelength, nm | 656.0 | | Signal Intensity, W/m^2 | 1.00E-14 | | Star Temperature, K | 5,778 | | Range, L.Y. | 1.00E+01 | |--------------------------------------|-----------------------------| | Receiver Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Diameter, m | 0.30 | | Atmospheric Transmission | 0.40 | | Antenna Efficiency | 0.70 | | Spectrometer Efficiency | 0.50 | | Optical Quantum Efficiency | 0.50 | | Heterodyning/Homodyning Efficiency | NA | | Local Oscillator Power, W | NA | | Polarizations | 1 | | Planckian/Fraunhofer Suppression, dB | 0.0 | | Sky Radiance, W/m^2.sr.nm | 1.00E-01 | | Electrical Bandwidth, Hz | 1.00E+00 | | Front-End Temperature, K | 300.0 | | Front-End Noise Figure, dB | 6.0 | | Photodetector Load, Ohms | 1.00E+04 | | Avalanche Gain | 100.0 | | Excess Avalanche Noise Factor | 0.00 | | Dark Bulk Current, nA | 0.00E+00 | |--------------------------------------|-----------------------------| | Frequency, Hz | 4.57E+14 | | Signal Magnitude | 16.0 | | Apparent Stellar Magnitude | 2.2 | | Contrast Ratio | 6.38E-05 | | Signal, dBW | -160.0 | | Planckian, W/m^2.Hz | 5.47E-24 | | Daylight Per Pixel, W/m^2.Hz | 3.21E-24 | | Responsivity, mA/mW | 0.26 | | Effective Noise Temperature, K | 43,942 | |--------------------------------------|-----------------------------| | Graphing Parameters | | |--------------------------------------| | | ENTER -----------------------------> | | | Lowest Optical Bandwidth, Hz | | | Log. Bandwidth Increment | | |======================================|=============================| | Optical Bandwidth, Hz | Background, W | SNR, dB | |--------------------------------------|---------------|-------------| | 1.00E+00 | 1.33E-25 | 19.12 | | 3.16E+00 | 4.22E-25 | 19.12 | | 1.00E+01 | 1.33E-24 | 19.12 | | 3.16E+01 | 4.22E-24 | 19.12 | | 1.00E+02 | 1.33E-23 | 19.12 | | 3.16E+02 | 4.22E-23 | 19.12 | | 1.00E+03 | 1.33E-22 | 19.12 | | 3.16E+03 | 4.22E-22 | 19.12 | | 1.00E+04 | 1.33E-21 | 19.12 | | 3.16E+04 | 4.22E-21 | 19.12 | | 1.00E+05 | 1.33E-20 | 19.12 | | 3.16E+05 | 4.22E-20 | 19.11 | | 1.00E+06 | 1.33E-19 | 19.11 | | 3.16E+06 | 4.22E-19 | 19.10 | | 1.00E+07 | 1.33E-18 | 19.06 | | 3.16E+07 | 4.22E-18 | 18.94 | | 1.00E+08 | 1.33E-17 | 18.57 | | 3.16E+08 | 4.22E-17 | 17.57 | | 1.00E+09 | 1.33E-16 | 15.41 | | 3.16E+09 | 4.22E-16 | 11.90 | | 1.00E+10 | 1.33E-15 | 7.51 | | 3.16E+10 | 4.22E-15 | 2.72 | | 1.00E+11 | 1.33E-14 | -2.21 | | 3.16E+11 | 4.22E-14 | -7.19 | | 1.00E+12 | 1.33E-13 | -12.19 | ===================================================================== June 30, 1991 RADOBS.41 BBOARD No. 588 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Dr. Stuart A. Kingsley Copyright (c), 1991 * * AMIEE, SMIEEE * * Consultant "Where No Photon Has Gone Before" * * __________ * * FIBERDYNE OPTOELECTRONICS / \ * * 545 Northview Drive --- hf >> kT --- * * Columbus, Ohio 43209 \__________/ * * United States .. .. .. .. .. * * Tel. (614) 258-7402 . . . . . . . . . . . * * skingsle@magnus.ircc.ohio-state.edu .. .. .. .. .. * * CompuServe: 72376,3545 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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