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 4274 | 2019-04-20T23-05-46_99300000_pankrac | 2019-04-20T23-05-46_99300000_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 | 99300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 12.271 stddev = 0.014 reference, 0.554 target [samples]; known correct: 12.168 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-05-46_99300000_pankrac <--> 2019-04-20T23-05-46_99300000_luna (pass 1)
reference error = 0.287206 ppm, target error = -0.124661 ppm
Measured dist: 13.117136 target fitness: 1.087761 stddevs: 37.220257 target, 0.080744 reference
gold result: 12.168451
2019-04-20T23-05-46_99300000_pankrac <--> 2019-04-20T23-05-46_99300000_luna (pass 2)
snr: 26.1 26.2 dB
reference error = -0.008958 ppm, target error = -0.107724 ppm
Measured dist: 12.270726 target fitness: 1.086767 stddevs: 0.554415 target, 0.013622 reference
gold result: 12.168451
| correlation 4275 | 2019-04-20T23-05-46_99300000_pankrac | 2019-04-20T23-05-46_99300000_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 | 99300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 25.416 stddev = 0.005 reference, 1.260 target [samples]; known correct: 24.029 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T23-05-46_99300000_pankrac <--> 2019-04-20T23-05-46_99300000_brmlab (pass 1)
reference error = 0.529708 ppm, target error = 0.209389 ppm
Measured dist: 25.720845 target fitness: 1.087707 stddevs: 44.027027 target, 0.143977 reference
gold result: 24.028855
2019-04-20T23-05-46_99300000_pankrac <--> 2019-04-20T23-05-46_99300000_brmlab (pass 2)
snr: 26.1 39.6 dB
reference error = -0.004425 ppm, target error = -0.065061 ppm
Measured dist: 25.416427 target fitness: 1.086360 stddevs: 1.259886 target, 0.004663 reference
gold result: 24.028855
| correlation 4276 | 2019-04-20T23-05-46_99300000_pankrac | 2019-04-20T23-05-46_99300000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -33.682 stddev = 0.004 reference, 0.438 target [samples]; known correct: -34.387 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-05-46_99300000_pankrac <--> 2019-04-20T23-05-46_99300000_brevnov (pass 1)
reference error = -0.016386 ppm, target error = -0.074086 ppm
Measured dist: -33.675423 target fitness: 1.088263 stddevs: 0.524997 target, 0.005903 reference
gold result: -34.387361
2019-04-20T23-05-46_99300000_pankrac <--> 2019-04-20T23-05-46_99300000_brevnov (pass 2)
snr: 26.1 48.5 dB
reference error = -0.001894 ppm, target error = -0.085015 ppm
Measured dist: -33.681993 target fitness: 1.088236 stddevs: 0.437923 target, 0.004200 reference
gold result: -34.387361
| correlation 4277 | 2019-04-20T23-05-46_99300000_luna | 2019-04-20T23-05-46_99300000_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 | 99300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 12.817 stddev = 0.016 reference, 5.107 target [samples]; known correct: 11.860 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-05-46_99300000_luna <--> 2019-04-20T23-05-46_99300000_brmlab (pass 1)
reference error = 0.231260 ppm, target error = -0.098879 ppm
Measured dist: 14.017108 target fitness: 1.085706 stddevs: 41.399216 target, 0.065346 reference
gold result: 11.860404
2019-04-20T23-05-46_99300000_luna <--> 2019-04-20T23-05-46_99300000_brmlab (pass 2)
snr: 26.2 40.0 dB
reference error = 0.006351 ppm, target error = 0.032118 ppm
Measured dist: 12.816967 target fitness: 1.084934 stddevs: 5.106539 target, 0.015804 reference
gold result: 11.860404
| correlation 4278 | 2019-04-20T23-05-46_99300000_luna | 2019-04-20T23-05-46_99300000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -45.866 stddev = 0.013 reference, 0.361 target [samples]; known correct: -46.556 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T23-05-46_99300000_luna <--> 2019-04-20T23-05-46_99300000_brevnov (pass 1)
reference error = -0.300354 ppm, target error = -0.122704 ppm
Measured dist: -46.370233 target fitness: 1.089491 stddevs: 28.643969 target, 0.083364 reference
gold result: -46.555812
2019-04-20T23-05-46_99300000_luna <--> 2019-04-20T23-05-46_99300000_brevnov (pass 2)
snr: 26.2 48.5 dB
reference error = 0.008178 ppm, target error = -0.025618 ppm
Measured dist: -45.865509 target fitness: 1.088965 stddevs: 0.360817 target, 0.013431 reference
gold result: -46.555812
| correlation 4279 | 2019-04-20T23-05-46_99300000_brmlab | 2019-04-20T23-05-46_99300000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -59.362 stddev = 0.004 reference, 1.135 target [samples]; known correct: -58.416 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T23-05-46_99300000_brmlab <--> 2019-04-20T23-05-46_99300000_brevnov (pass 1)
reference error = -0.545900 ppm, target error = -0.086265 ppm
Measured dist: -60.492023 target fitness: 1.089176 stddevs: 33.520466 target, 0.150244 reference
gold result: -58.416216
2019-04-20T23-05-46_99300000_brmlab <--> 2019-04-20T23-05-46_99300000_brevnov (pass 2)
snr: 39.7 48.5 dB
reference error = 0.002889 ppm, target error = 0.013835 ppm
Measured dist: -59.361582 target fitness: 1.087984 stddevs: 1.135419 target, 0.004081 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
