TDOA measurements at 98700 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 4046 | 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 | 55.329 stddev = 0.012 reference, 0.605 target [samples]; known correct: 52.216 |
| 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 = -0.063778 ppm
Measured dist: 53.683880 target fitness: 1.827964 stddevs: 2.079226 target, 0.091729 reference
gold result: 52.216497
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_luna (pass 2)
snr: 35.9 38.5 dB
reference error = -0.015714 ppm, target error = -0.062725 ppm
Measured dist: 55.329468 target fitness: 1.829595 stddevs: 0.604753 target, 0.012010 reference
gold result: 52.216497
| correlation 4047 | 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 | 49.181 stddev = 0.006 reference, 1.223 target [samples]; known correct: 45.570 |
| 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 = 0.045962 ppm
Measured dist: 48.566801 target fitness: 1.798167 stddevs: 2.793016 target, 0.101408 reference
gold result: 45.570215
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brmlab (pass 2)
snr: 35.9 50.1 dB
reference error = 0.016743 ppm, target error = 0.152365 ppm
Measured dist: 49.180753 target fitness: 1.800771 stddevs: 1.222939 target, 0.006338 reference
gold result: 45.570215
| correlation 4048 | 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 | 82.526 stddev = 0.004 reference, 19.024 target [samples]; known correct: 33.653 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
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 = 0.026712 ppm
Measured dist: 83.228129 target fitness: 1.597356 stddevs: 19.365393 target, 0.028157 reference
gold result: 33.653139
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 35.9 35.8 dB
reference error = 0.004637 ppm, target error = 0.026682 ppm
Measured dist: 82.526068 target fitness: 1.595052 stddevs: 19.023748 target, 0.004090 reference
gold result: 33.653139
| correlation 4049 | 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 | -6.497 stddev = 0.017 reference, 0.812 target [samples]; known correct: -6.646 |
| 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 = 0.000216 ppm
Measured dist: -1.993391 target fitness: 1.680523 stddevs: 4.942778 target, 0.176412 reference
gold result: -6.646282
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brmlab (pass 2)
snr: 38.5 48.7 dB
reference error = -0.032766 ppm, target error = -0.060137 ppm
Measured dist: -6.496925 target fitness: 1.686816 stddevs: 0.812276 target, 0.016561 reference
gold result: -6.646282
| correlation 4050 | 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 | 25.300 stddev = 0.013 reference, 19.253 target [samples]; known correct: -18.563 |
| 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 = -0.008736 ppm
Measured dist: 27.601221 target fitness: 1.437472 stddevs: 21.757877 target, 0.118921 reference
gold result: -18.563359
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 38.5 35.8 dB
reference error = 0.023152 ppm, target error = -0.076104 ppm
Measured dist: 25.300346 target fitness: 1.429584 stddevs: 19.253328 target, 0.013105 reference
gold result: -18.563359
| correlation 4051 | 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 | 30.074 stddev = 0.005 reference, 18.755 target [samples]; known correct: -11.917 |
| 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 = 0.154713 ppm
Measured dist: 33.749730 target fitness: 1.427788 stddevs: 19.989037 target, 0.071810 reference
gold result: -11.917077
2019-04-20T21-19-12_98700000_brmlab <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 49.8 35.8 dB
reference error = -0.008593 ppm, target error = -0.091025 ppm
Measured dist: 30.073579 target fitness: 1.430956 stddevs: 18.755415 target, 0.004670 reference
gold result: -11.917077
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
