TDOA measurements at 94100 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 3980 | 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 | 25.823 stddev = 0.010 reference, 0.928 target [samples]; known correct: 28.624 |
| 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 = 0.083882 ppm
Measured dist: 26.370950 target fitness: 1.434073 stddevs: 2.756981 target, 0.086094 reference
gold result: 28.624249
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_luna (pass 2)
snr: 20.3 14.8 dB
reference error = -0.012318 ppm, target error = -0.034556 ppm
Measured dist: 25.822677 target fitness: 1.433199 stddevs: 0.928418 target, 0.009674 reference
gold result: 28.624249
| correlation 3981 | 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 | 17.397 stddev = 0.005 reference, 1.242 target [samples]; known correct: 18.948 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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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 = 0.061446 ppm
Measured dist: 16.840454 target fitness: 1.427725 stddevs: 5.288134 target, 0.146249 reference
gold result: 18.947899
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brmlab (pass 2)
snr: 20.3 20.7 dB
reference error = -0.007661 ppm, target error = -0.039962 ppm
Measured dist: 17.397439 target fitness: 1.425995 stddevs: 1.241849 target, 0.004672 reference
gold result: 18.947899
| correlation 3982 | 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 | 21.043 stddev = 0.004 reference, 0.961 target [samples]; known correct: 27.214 |
| 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_brevnov (pass 1)
reference error = -0.078348 ppm, target error = -0.012280 ppm
Measured dist: 21.083528 target fitness: 1.432253 stddevs: 1.266862 target, 0.022025 reference
gold result: 27.214473
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 20.3 23.8 dB
reference error = -0.002370 ppm, target error = -0.009386 ppm
Measured dist: 21.043411 target fitness: 1.432855 stddevs: 0.961038 target, 0.003865 reference
gold result: 27.214473
| correlation 3983 | 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 | -8.223 stddev = 0.009 reference, 0.859 target [samples]; known correct: -9.676 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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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 = 0.023679 ppm
Measured dist: -8.563321 target fitness: 1.434309 stddevs: 2.481586 target, 0.062325 reference
gold result: -9.676350
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brmlab (pass 2)
snr: 14.8 20.7 dB
reference error = -0.002136 ppm, target error = 0.014963 ppm
Measured dist: -8.223330 target fitness: 1.431693 stddevs: 0.859156 target, 0.009121 reference
gold result: -9.676350
| correlation 3984 | 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 | -4.857 stddev = 0.010 reference, 1.018 target [samples]; known correct: -1.410 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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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 = -0.016082 ppm
Measured dist: -4.440548 target fitness: 1.443097 stddevs: 3.234644 target, 0.109291 reference
gold result: -1.409776
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 14.8 23.8 dB
reference error = 0.021713 ppm, target error = 0.032559 ppm
Measured dist: -4.857220 target fitness: 1.439311 stddevs: 1.018056 target, 0.009760 reference
gold result: -1.409776
| correlation 3985 | 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 | 3.585 stddev = 0.005 reference, 0.890 target [samples]; known correct: 8.267 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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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 = -0.022942 ppm
Measured dist: 4.295542 target fitness: 1.442386 stddevs: 5.602991 target, 0.167106 reference
gold result: 8.266574
2019-04-20T20-57-05_93700000_brmlab <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 20.7 23.8 dB
reference error = 0.008941 ppm, target error = 0.038226 ppm
Measured dist: 3.584543 target fitness: 1.440545 stddevs: 0.890011 target, 0.004714 reference
gold result: 8.266574
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
