TDOA measurements at 95300 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 4172 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_luna |
|---|
| gain | [8, 8, 8, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.090 stddev = 0.008 reference, 1.074 target [samples]; known correct: -4.303 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_luna (pass 1)
reference error = 0.271743 ppm, target error = -0.053653 ppm
Measured dist: -0.741257 target fitness: 1.974063 stddevs: 2.049119 target, 0.072011 reference
gold result: -4.303374
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_luna (pass 2)
snr: 35.3 36.9 dB
reference error = -0.008705 ppm, target error = -0.095772 ppm
Measured dist: -1.089855 target fitness: 1.979709 stddevs: 1.073977 target, 0.007580 reference
gold result: -4.303374
| correlation 4173 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 6.311 stddev = 0.004 reference, 0.904 target [samples]; known correct: 8.032 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brevnov (pass 1)
reference error = -0.009204 ppm, target error = -0.059320 ppm
Measured dist: 6.297392 target fitness: 1.991999 stddevs: 0.916163 target, 0.004489 reference
gold result: 8.032402
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brevnov (pass 2)
snr: 35.3 40.9 dB
reference error = -0.000632 ppm, target error = -0.058857 ppm
Measured dist: 6.310590 target fitness: 1.991368 stddevs: 0.904199 target, 0.004185 reference
gold result: 8.032402
| correlation 4174 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -13.251 stddev = 0.009 reference, 1.652 target [samples]; known correct: -13.028 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.343237 ppm, target error = -0.067453 ppm
Measured dist: -14.967449 target fitness: 1.989298 stddevs: 2.933992 target, 0.093978 reference
gold result: -13.028337
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 35.3 47.5 dB
reference error = -0.027331 ppm, target error = -0.051659 ppm
Measured dist: -13.251096 target fitness: 1.999164 stddevs: 1.652371 target, 0.008671 reference
gold result: -13.028337
| correlation 4175 | 2019-04-20T22-11-43_95300000_luna | 2019-04-20T22-11-43_95300000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 7.537 stddev = 0.012 reference, 0.632 target [samples]; known correct: 12.336 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brevnov (pass 1)
reference error = -0.238407 ppm, target error = 0.065192 ppm
Measured dist: 6.895167 target fitness: 1.984030 stddevs: 1.937990 target, 0.062924 reference
gold result: 12.335776
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brevnov (pass 2)
snr: 36.8 40.9 dB
reference error = -0.039133 ppm, target error = 0.086421 ppm
Measured dist: 7.537119 target fitness: 1.996897 stddevs: 0.632049 target, 0.012283 reference
gold result: 12.335776
| correlation 4176 | 2019-04-20T22-11-43_95300000_luna | 2019-04-20T22-11-43_95300000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -12.024 stddev = 0.007 reference, 0.712 target [samples]; known correct: -8.725 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.624335 ppm, target error = 0.045677 ppm
Measured dist: -16.310179 target fitness: 1.899113 stddevs: 4.365336 target, 0.168719 reference
gold result: -8.724964
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 36.8 46.9 dB
reference error = -0.003174 ppm, target error = -0.043810 ppm
Measured dist: -12.024241 target fitness: 1.935135 stddevs: 0.712233 target, 0.007260 reference
gold result: -8.724964
| correlation 4177 | 2019-04-20T22-11-43_95300000_brevnov | 2019-04-20T22-11-43_95300000_brmlab |
|---|
| gain | [3, 3, 3, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -19.632 stddev = 0.006 reference, 0.957 target [samples]; known correct: -21.061 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-11-43_95300000_brevnov <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.371564 ppm, target error = -0.030479 ppm
Measured dist: -21.364072 target fitness: 1.968497 stddevs: 2.429661 target, 0.100605 reference
gold result: -21.060739
2019-04-20T22-11-43_95300000_brevnov <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 40.9 47.5 dB
reference error = 0.013626 ppm, target error = -0.033873 ppm
Measured dist: -19.631748 target fitness: 1.985584 stddevs: 0.957010 target, 0.005781 reference
gold result: -21.060739
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
