TDOA measurements at 99300 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 4058 | 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 | 12.341 stddev = 0.012 reference, 0.655 target [samples]; known correct: 12.168 |
| 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 = 0.328396 ppm, target error = 0.079433 ppm
Measured dist: 11.870564 target fitness: 1.095974 stddevs: 19.412014 target, 0.091761 reference
gold result: 12.168451
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_luna (pass 2)
snr: 27.6 32.3 dB
reference error = -0.015451 ppm, target error = -0.032266 ppm
Measured dist: 12.341255 target fitness: 1.091514 stddevs: 0.654980 target, 0.012049 reference
gold result: 12.168451
| correlation 4059 | 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 | 25.221 stddev = 0.006 reference, 1.088 target [samples]; known correct: 24.029 |
| 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_brmlab (pass 1)
reference error = -0.368544 ppm, target error = -0.102561 ppm
Measured dist: 25.647308 target fitness: 1.096271 stddevs: 19.738319 target, 0.101408 reference
gold result: 24.028855
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brmlab (pass 2)
snr: 27.5 41.4 dB
reference error = 0.016743 ppm, target error = -0.000368 ppm
Measured dist: 25.221109 target fitness: 1.092671 stddevs: 1.087896 target, 0.006338 reference
gold result: 24.028855
| correlation 4060 | 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 | -33.221 stddev = 0.004 reference, 0.565 target [samples]; known correct: -34.387 |
| 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 = -0.022576 ppm
Measured dist: -33.710439 target fitness: 1.094536 stddevs: 1.404637 target, 0.028157 reference
gold result: -34.387361
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 27.5 47.1 dB
reference error = 0.004637 ppm, target error = -0.079811 ppm
Measured dist: -33.220774 target fitness: 1.094743 stddevs: 0.564727 target, 0.004090 reference
gold result: -34.387361
| correlation 4061 | 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 | 12.581 stddev = 0.017 reference, 1.065 target [samples]; known correct: 11.860 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
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 = -0.063895 ppm
Measured dist: 13.928897 target fitness: 1.107113 stddevs: 33.302711 target, 0.176412 reference
gold result: 11.860404
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brmlab (pass 2)
snr: 32.3 40.1 dB
reference error = -0.032766 ppm, target error = 0.027893 ppm
Measured dist: 12.581432 target fitness: 1.091023 stddevs: 1.064763 target, 0.016561 reference
gold result: 11.860404
| correlation 4062 | 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 | -45.603 stddev = 0.013 reference, 0.513 target [samples]; known correct: -46.556 |
| 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 = -0.193705 ppm
Measured dist: -45.407234 target fitness: 1.099426 stddevs: 14.254153 target, 0.118921 reference
gold result: -46.555812
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 32.3 47.1 dB
reference error = 0.023200 ppm, target error = 0.000330 ppm
Measured dist: -45.602881 target fitness: 1.096038 stddevs: 0.512953 target, 0.013115 reference
gold result: -46.555812
| correlation 4063 | 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 | -58.737 stddev = 0.005 reference, 0.958 target [samples]; known correct: -58.416 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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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 = 0.110677 ppm
Measured dist: -59.212384 target fitness: 1.098069 stddevs: 3.317976 target, 0.071810 reference
gold result: -58.416216
2019-04-20T21-19-12_98700000_brmlab <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 41.1 47.1 dB
reference error = -0.008593 ppm, target error = -0.072018 ppm
Measured dist: -58.736941 target fitness: 1.096962 stddevs: 0.958476 target, 0.004670 reference
gold result: -58.416216
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
