TDOA measurements at 93700 kHz
Legend
Spectrum:
- Green: zero offset
- Red: target signal
Waterfall:
Correlation function:
- Mouse over to show the fitted result
- White (on the very left): this correlation has been used (no retuning && sufficient fitness)
- Yellow on the left: fitness function (grows to the right)
- Cyan lines: lines fitted through the reference and target transmitters
- Yellow dots: correlation peaks that were used
- Red line: gold result (if the position of the target is known)
You will find the map at the bottom of the page. (jump there)
| correlation 3974 | 2019-04-20T20-57-05_93700000_pankrac | 2019-04-20T20-57-05_93700000_luna |
|---|
| gain | [8, 8, 8, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.439 stddev = 0.010 reference, 0.509 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_luna (pass 1)
reference error = 0.307634 ppm, target error = 0.028651 ppm
Measured dist: -1.516270 target fitness: 1.472242 stddevs: 1.894720 target, 0.086094 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_luna (pass 2)
snr: 48.6 41.4 dB
reference error = -0.012318 ppm, target error = -0.050392 ppm
Measured dist: -1.439456 target fitness: 1.473035 stddevs: 0.509380 target, 0.009674 reference
gold result: -0.000000
| correlation 3975 | 2019-04-20T20-57-05_93700000_pankrac | 2019-04-20T20-57-05_93700000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.194 stddev = 0.005 reference, 0.359 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brmlab (pass 1)
reference error = 0.531834 ppm, target error = 0.105101 ppm
Measured dist: -1.237060 target fitness: 1.475137 stddevs: 3.562439 target, 0.146249 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brmlab (pass 2)
snr: 48.6 55.2 dB
reference error = -0.007661 ppm, target error = -0.037487 ppm
Measured dist: -1.193722 target fitness: 1.477780 stddevs: 0.358729 target, 0.004672 reference
gold result: -0.000000
| correlation 3976 | 2019-04-20T20-57-05_93700000_pankrac | 2019-04-20T20-57-05_93700000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -7.991 stddev = 0.004 reference, 3.775 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brevnov (pass 1)
reference error = -0.078348 ppm, target error = -0.060564 ppm
Measured dist: -8.087409 target fitness: 1.583731 stddevs: 3.829448 target, 0.022025 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 48.6 38.3 dB
reference error = -0.002370 ppm, target error = -0.063325 ppm
Measured dist: -7.991462 target fitness: 1.583898 stddevs: 3.775487 target, 0.003865 reference
gold result: -0.000000
| correlation 3977 | 2019-04-20T20-57-05_93700000_luna | 2019-04-20T20-57-05_93700000_brmlab |
|---|
| gain | [10, 10, 10, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 0.431 stddev = 0.009 reference, 0.506 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brmlab (pass 1)
reference error = 0.220612 ppm, target error = 0.019899 ppm
Measured dist: 0.397649 target fitness: 1.484317 stddevs: 1.683551 target, 0.062325 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brmlab (pass 2)
snr: 41.4 55.2 dB
reference error = -0.002136 ppm, target error = 0.012230 ppm
Measured dist: 0.431041 target fitness: 1.484724 stddevs: 0.506125 target, 0.009121 reference
gold result: -0.000000
| correlation 3978 | 2019-04-20T20-57-05_93700000_luna | 2019-04-20T20-57-05_93700000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -6.686 stddev = 0.010 reference, 3.359 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brevnov (pass 1)
reference error = -0.392461 ppm, target error = 0.028995 ppm
Measured dist: -4.405661 target fitness: 1.572396 stddevs: 4.151663 target, 0.109291 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 41.5 38.3 dB
reference error = 0.021713 ppm, target error = -0.065558 ppm
Measured dist: -6.685801 target fitness: 1.576998 stddevs: 3.358964 target, 0.009760 reference
gold result: -0.000000
| correlation 3979 | 2019-04-20T20-57-05_93700000_brmlab | 2019-04-20T20-57-05_93700000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -6.664 stddev = 0.005 reference, 3.218 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_brmlab <--> 2019-04-20T20-57-05_93700000_brevnov (pass 1)
reference error = -0.610418 ppm, target error = -0.006547 ppm
Measured dist: -4.760144 target fitness: 1.585428 stddevs: 5.126466 target, 0.167106 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_brmlab <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 55.2 38.3 dB
reference error = 0.008941 ppm, target error = -0.093457 ppm
Measured dist: -6.664458 target fitness: 1.591008 stddevs: 3.218204 target, 0.004714 reference
gold result: -0.000000
Map
- receivers
- real position (if known)- blue line - measurement hyperbola
- pale blue line - measurement hyperbola of measurement with high standard deviation
- red line - standard deviation error bar
