TDOA measurements at 682000 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 4466 | 2019-04-20T19-41-48_682000000_pankrac | 2019-04-20T19-41-48_682000000_luna |
|---|
| gain | [13, 13, 13, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 682000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 0.233 stddev = 0.010 reference, 0.035 target [samples]; known correct: 0.082 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T19-41-48_682000000_pankrac <--> 2019-04-20T19-41-48_682000000_luna (pass 1)
reference error = 0.356869 ppm, target error = 0.354936 ppm
Measured dist: 0.178694 target fitness: 17.126343 stddevs: 0.484760 target, 0.097507 reference
gold result: 0.081531
2019-04-20T19-41-48_682000000_pankrac <--> 2019-04-20T19-41-48_682000000_luna (pass 2)
snr: 7.3 6.6 dB
reference error = 0.008597 ppm, target error = -0.002377 ppm
Measured dist: 0.233180 target fitness: 47.010891 stddevs: 0.035126 target, 0.009523 reference
gold result: 0.081531
| correlation 4467 | 2019-04-20T19-41-48_682000000_pankrac | 2019-04-20T19-41-48_682000000_brmlab |
|---|
| gain | [13, 13, 13, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 682000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 0.050 stddev = 0.005 reference, 0.030 target [samples]; known correct: 0.035 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-41-48_682000000_pankrac <--> 2019-04-20T19-41-48_682000000_brmlab (pass 1)
reference error = 0.600579 ppm, target error = 0.606503 ppm
Measured dist: -0.010198 target fitness: 15.648268 stddevs: 0.822804 target, 0.163386 reference
gold result: 0.034988
2019-04-20T19-41-48_682000000_pankrac <--> 2019-04-20T19-41-48_682000000_brmlab (pass 2)
snr: 7.3 15.8 dB
reference error = 0.008536 ppm, target error = 0.009919 ppm
Measured dist: 0.049859 target fitness: 34.475880 stddevs: 0.029812 target, 0.004638 reference
gold result: 0.034988
| correlation 4468 | 2019-04-20T19-41-48_682000000_pankrac | 2019-04-20T19-41-48_682000000_brevnov |
|---|
| gain | [13, 13, 13, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 682000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 0.149 stddev = 0.004 reference, 0.040 target [samples]; known correct: 0.067 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-41-48_682000000_pankrac <--> 2019-04-20T19-41-48_682000000_brevnov (pass 1)
reference error = -0.024001 ppm, target error = -0.029246 ppm
Measured dist: 0.155670 target fitness: 40.693060 stddevs: 0.053065 target, 0.007800 reference
gold result: 0.066959
2019-04-20T19-41-48_682000000_pankrac <--> 2019-04-20T19-41-48_682000000_brevnov (pass 2)
snr: 7.3 7.8 dB
reference error = -0.001298 ppm, target error = -0.002237 ppm
Measured dist: 0.149499 target fitness: 40.661237 stddevs: 0.039740 target, 0.004264 reference
gold result: 0.066959
| correlation 4469 | 2019-04-20T19-41-48_682000000_luna | 2019-04-20T19-41-48_682000000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 682000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -0.196 stddev = 0.011 reference, 0.033 target [samples]; known correct: -0.047 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-41-48_682000000_luna <--> 2019-04-20T19-41-48_682000000_brmlab (pass 1)
reference error = 0.230855 ppm, target error = 0.268740 ppm
Measured dist: -0.201687 target fitness: 28.812948 stddevs: 0.364548 target, 0.064102 reference
gold result: -0.046543
2019-04-20T19-41-48_682000000_luna <--> 2019-04-20T19-41-48_682000000_brmlab (pass 2)
snr: 6.6 15.7 dB
reference error = -0.002445 ppm, target error = 0.021166 ppm
Measured dist: -0.196236 target fitness: 37.361876 stddevs: 0.032850 target, 0.010725 reference
gold result: -0.046543
| correlation 4470 | 2019-04-20T19-41-48_682000000_luna | 2019-04-20T19-41-48_682000000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 682000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -0.036 stddev = 0.007 reference, 0.026 target [samples]; known correct: -0.015 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-41-48_682000000_luna <--> 2019-04-20T19-41-48_682000000_brevnov (pass 1)
reference error = -0.399037 ppm, target error = -0.381806 ppm
Measured dist: -0.126652 target fitness: 10.558475 stddevs: 0.520554 target, 0.108760 reference
gold result: -0.014572
2019-04-20T19-41-48_682000000_luna <--> 2019-04-20T19-41-48_682000000_brevnov (pass 2)
snr: 6.6 7.9 dB
reference error = 0.010749 ppm, target error = 0.015498 ppm
Measured dist: -0.035756 target fitness: 46.218635 stddevs: 0.025907 target, 0.007329 reference
gold result: -0.014572
| correlation 4471 | 2019-04-20T19-41-48_682000000_brmlab | 2019-04-20T19-41-48_682000000_brevnov |
|---|
| gain | [11, 11, 11, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 682000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 0.133 stddev = 0.007 reference, 0.046 target [samples]; known correct: 0.032 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-41-48_682000000_brmlab <--> 2019-04-20T19-41-48_682000000_brevnov (pass 1)
reference error = -0.611417 ppm, target error = -0.637099 ppm
Measured dist: 0.086548 target fitness: 14.921547 stddevs: 0.874646 target, 0.165691 reference
gold result: 0.031971
2019-04-20T19-41-48_682000000_brmlab <--> 2019-04-20T19-41-48_682000000_brevnov (pass 2)
snr: 15.8 7.8 dB
reference error = -0.021278 ppm, target error = -0.027494 ppm
Measured dist: 0.132558 target fitness: 31.799290 stddevs: 0.046162 target, 0.006873 reference
gold result: 0.031971
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
