TDOA measurements at 100700 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 3860 | 2019-04-20T20-10-33_100700000_pankrac | 2019-04-20T20-10-33_100700000_luna |
|---|
| gain | [3, 3, 3, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 60.077 stddev = 0.015 reference, 0.498 target [samples]; known correct: 60.142 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_luna (pass 1)
reference error = 0.266582 ppm, target error = 0.016142 ppm
Measured dist: 60.031888 target fitness: 1.916474 stddevs: 1.522554 target, 0.074153 reference
gold result: 60.142441
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_luna (pass 2)
snr: 40.9 46.5 dB
reference error = 0.038548 ppm, target error = 0.041248 ppm
Measured dist: 60.076855 target fitness: 1.929943 stddevs: 0.497977 target, 0.015167 reference
gold result: 60.142441
| correlation 3861 | 2019-04-20T20-10-33_100700000_pankrac | 2019-04-20T20-10-33_100700000_brmlab |
|---|
| gain | [3, 3, 3, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 52.641 stddev = 0.008 reference, 0.634 target [samples]; known correct: 53.121 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_brmlab (pass 1)
reference error = 0.491211 ppm, target error = -0.019917 ppm
Measured dist: 52.033319 target fitness: 1.893657 stddevs: 2.732916 target, 0.135720 reference
gold result: 53.120541
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_brmlab (pass 2)
snr: 40.9 44.2 dB
reference error = 0.026995 ppm, target error = 0.003286 ppm
Measured dist: 52.641249 target fitness: 1.906835 stddevs: 0.634315 target, 0.008491 reference
gold result: 53.120541
| correlation 3862 | 2019-04-20T20-10-33_100700000_pankrac | 2019-04-20T20-10-33_100700000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 96.002 stddev = 0.007 reference, 37.238 target [samples]; known correct: 18.108 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_brevnov (pass 1)
reference error = -0.048620 ppm, target error = -0.043188 ppm
Measured dist: 95.926037 target fitness: 1.549539 stddevs: 37.256828 target, 0.013792 reference
gold result: 18.107756
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_brevnov (pass 2)
snr: 40.9 42.2 dB
reference error = -0.023431 ppm, target error = -0.017616 ppm
Measured dist: 96.001637 target fitness: 1.549511 stddevs: 37.237556 target, 0.007464 reference
gold result: 18.107756
| correlation 3863 | 2019-04-20T20-10-33_100700000_luna | 2019-04-20T20-10-33_100700000_brmlab |
|---|
| gain | [7, 7, 7, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -7.244 stddev = 0.015 reference, 0.519 target [samples]; known correct: -7.022 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-10-33_100700000_luna <--> 2019-04-20T20-10-33_100700000_brmlab (pass 1)
reference error = 0.179288 ppm, target error = 0.051836 ppm
Measured dist: -7.142445 target fitness: 1.814806 stddevs: 1.233602 target, 0.049736 reference
gold result: -7.021900
2019-04-20T20-10-33_100700000_luna <--> 2019-04-20T20-10-33_100700000_brmlab (pass 2)
snr: 46.5 44.5 dB
reference error = 0.035726 ppm, target error = 0.007607 ppm
Measured dist: -7.243809 target fitness: 1.815601 stddevs: 0.518509 target, 0.015331 reference
gold result: -7.021900
| correlation 3864 | 2019-04-20T20-10-33_100700000_luna | 2019-04-20T20-10-33_100700000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 40.667 stddev = 0.015 reference, 38.045 target [samples]; known correct: -42.035 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-10-33_100700000_luna <--> 2019-04-20T20-10-33_100700000_brevnov (pass 1)
reference error = -0.336584 ppm, target error = 0.019829 ppm
Measured dist: 38.982661 target fitness: 1.351562 stddevs: 38.180305 target, 0.093240 reference
gold result: -42.034686
2019-04-20T20-10-33_100700000_luna <--> 2019-04-20T20-10-33_100700000_brevnov (pass 2)
snr: 46.5 42.2 dB
reference error = -0.036480 ppm, target error = 0.014901 ppm
Measured dist: 40.667141 target fitness: 1.353341 stddevs: 38.045467 target, 0.014749 reference
gold result: -42.034686
| correlation 3865 | 2019-04-20T20-10-33_100700000_brmlab | 2019-04-20T20-10-33_100700000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 50.030 stddev = 0.009 reference, 41.211 target [samples]; known correct: -35.013 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-10-33_100700000_brmlab <--> 2019-04-20T20-10-33_100700000_brevnov (pass 1)
reference error = -0.557994 ppm, target error = 0.012571 ppm
Measured dist: -33.973663 target fitness: 1.360611 stddevs: 41.403790 target, 0.154550 reference
gold result: -35.012786
2019-04-20T20-10-33_100700000_brmlab <--> 2019-04-20T20-10-33_100700000_brevnov (pass 2)
snr: 44.4 42.1 dB
reference error = -0.028930 ppm, target error = -0.006254 ppm
Measured dist: 50.030177 target fitness: 1.369146 stddevs: 41.211025 target, 0.008887 reference
gold result: -35.012786
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
