TDOA measurements at 94600 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 4004 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_luna |
|---|
| gain | [8, 8, 8, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.768 stddev = 0.016 reference, 0.483 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_luna (pass 1)
reference error = 0.254754 ppm, target error = -0.104798 ppm
Measured dist: 0.093766 target fitness: 1.117378 stddevs: 2.892850 target, 0.069949 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_luna (pass 2)
snr: 37.0 30.6 dB
reference error = 0.040613 ppm, target error = 0.048382 ppm
Measured dist: -1.768240 target fitness: 1.116855 stddevs: 0.483185 target, 0.016220 reference
gold result: -0.000000
| correlation 4005 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_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 | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.579 stddev = 0.006 reference, 0.682 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brmlab (pass 1)
reference error = -0.384269 ppm, target error = -0.022319 ppm
Measured dist: -1.756624 target fitness: 1.121533 stddevs: 16.333849 target, 0.104508 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brmlab (pass 2)
snr: 37.0 49.1 dB
reference error = 0.014576 ppm, target error = 0.098782 ppm
Measured dist: -1.578701 target fitness: 1.116839 stddevs: 0.682178 target, 0.005669 reference
gold result: -0.000000
| correlation 4006 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 1.420 stddev = 0.004 reference, 0.651 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = -0.094468 ppm, target error = -0.055004 ppm
Measured dist: 1.395101 target fitness: 1.111953 stddevs: 1.244609 target, 0.026387 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 37.0 38.9 dB
reference error = 0.005621 ppm, target error = 0.024435 ppm
Measured dist: 1.420449 target fitness: 1.111853 stddevs: 0.651148 target, 0.004405 reference
gold result: -0.000000
| correlation 4007 | 2019-04-20T21-03-18_94600000_luna | 2019-04-20T21-03-18_94600000_brmlab |
|---|
| gain | [10, 10, 10, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 0.551 stddev = 0.017 reference, 0.828 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brmlab (pass 1)
reference error = -0.702520 ppm, target error = 0.125622 ppm
Measured dist: -1.617530 target fitness: 1.137016 stddevs: 36.003128 target, 0.188396 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brmlab (pass 2)
snr: 30.5 49.0 dB
reference error = 0.041943 ppm, target error = 0.046648 ppm
Measured dist: 0.551379 target fitness: 1.121051 stddevs: 0.827584 target, 0.017383 reference
gold result: -0.000000
| correlation 4008 | 2019-04-20T21-03-18_94600000_luna | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 3.019 stddev = 0.013 reference, 0.835 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = -0.397918 ppm, target error = 0.120703 ppm
Measured dist: 1.343344 target fitness: 1.118085 stddevs: 15.942152 target, 0.110107 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 30.6 38.9 dB
reference error = 0.019760 ppm, target error = 0.003048 ppm
Measured dist: 3.019300 target fitness: 1.115214 stddevs: 0.835383 target, 0.012584 reference
gold result: -0.000000
| correlation 4009 | 2019-04-20T21-03-18_94600000_brmlab | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 2.488 stddev = 0.007 reference, 0.886 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_brmlab <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = 0.258172 ppm, target error = 0.153910 ppm
Measured dist: 0.901425 target fitness: 1.116894 stddevs: 3.107999 target, 0.071031 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_brmlab <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 49.1 38.9 dB
reference error = 0.022634 ppm, target error = -0.052114 ppm
Measured dist: 2.487872 target fitness: 1.116879 stddevs: 0.885629 target, 0.007428 reference
gold result: -0.000000
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
