TDOA measurements at 99700 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 4052 | 2019-04-20T21-19-12_98700000_pankrac | 2019-04-20T21-19-12_98700000_luna |
|---|
| gain | [2, 2, 2, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 59.948 stddev = 0.012 reference, 1.465 target [samples]; known correct: 59.771 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_luna (pass 1)
reference error = 0.328280 ppm, target error = -0.028234 ppm
Measured dist: 57.654229 target fitness: 1.492422 stddevs: 3.392160 target, 0.091729 reference
gold result: 59.770501
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_luna (pass 2)
snr: 52.5 32.8 dB
reference error = -0.015714 ppm, target error = 0.018006 ppm
Measured dist: 59.948173 target fitness: 1.488460 stddevs: 1.465441 target, 0.012010 reference
gold result: 59.770501
| correlation 4053 | 2019-04-20T21-19-12_98700000_pankrac | 2019-04-20T21-19-12_98700000_brmlab |
|---|
| gain | [2, 2, 2, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 56.152 stddev = 0.006 reference, 1.385 target [samples]; known correct: 53.089 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brmlab (pass 1)
reference error = -0.368544 ppm, target error = -0.018515 ppm
Measured dist: 59.586917 target fitness: 1.469508 stddevs: 4.365928 target, 0.101408 reference
gold result: 53.089377
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brmlab (pass 2)
snr: 52.5 42.2 dB
reference error = 0.016743 ppm, target error = -0.072935 ppm
Measured dist: 56.151570 target fitness: 1.468120 stddevs: 1.384758 target, 0.006338 reference
gold result: 53.089377
| correlation 4054 | 2019-04-20T21-19-12_98700000_pankrac | 2019-04-20T21-19-12_98700000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 74.493 stddev = 0.004 reference, 26.098 target [samples]; known correct: 35.915 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brevnov (pass 1)
reference error = -0.101271 ppm, target error = -0.011508 ppm
Measured dist: 75.221656 target fitness: 1.422382 stddevs: 26.177771 target, 0.028157 reference
gold result: 35.914913
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 52.5 24.4 dB
reference error = 0.004637 ppm, target error = -0.023319 ppm
Measured dist: 74.493123 target fitness: 1.419546 stddevs: 26.098030 target, 0.004090 reference
gold result: 35.914913
| correlation 4055 | 2019-04-20T21-19-12_98700000_luna | 2019-04-20T21-19-12_98700000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -3.855 stddev = 0.017 reference, 1.235 target [samples]; known correct: -6.681 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brmlab (pass 1)
reference error = -0.630945 ppm, target error = -0.087513 ppm
Measured dist: 4.985524 target fitness: 1.381852 stddevs: 7.854439 target, 0.176412 reference
gold result: -6.681123
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brmlab (pass 2)
snr: 32.8 44.2 dB
reference error = -0.032766 ppm, target error = 0.041749 ppm
Measured dist: -3.854586 target fitness: 1.384487 stddevs: 1.235124 target, 0.016561 reference
gold result: -6.681123
| correlation 4056 | 2019-04-20T21-19-12_98700000_luna | 2019-04-20T21-19-12_98700000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 15.365 stddev = 0.013 reference, 29.543 target [samples]; known correct: -23.856 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brevnov (pass 1)
reference error = -0.429642 ppm, target error = 0.002454 ppm
Measured dist: 15.500121 target fitness: 1.356153 stddevs: 30.608601 target, 0.118921 reference
gold result: -23.855587
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 32.8 24.6 dB
reference error = 0.023152 ppm, target error = -0.047782 ppm
Measured dist: 15.365364 target fitness: 1.373738 stddevs: 29.542988 target, 0.013105 reference
gold result: -23.855587
| correlation 4057 | 2019-04-20T21-19-12_98700000_brmlab | 2019-04-20T21-19-12_98700000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 15.220 stddev = 0.005 reference, 26.471 target [samples]; known correct: -17.174 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T21-19-12_98700000_brmlab <--> 2019-04-20T21-19-12_98700000_brevnov (pass 1)
reference error = 0.263951 ppm, target error = 0.054832 ppm
Measured dist: 13.589891 target fitness: 1.351502 stddevs: 28.072559 target, 0.071810 reference
gold result: -17.174464
2019-04-20T21-19-12_98700000_brmlab <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 43.0 24.5 dB
reference error = -0.008593 ppm, target error = -0.002224 ppm
Measured dist: 15.219660 target fitness: 1.363032 stddevs: 26.471260 target, 0.004670 reference
gold result: -17.174464
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
