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 3986 | 2019-04-20T20-57-05_93700000_pankrac | 2019-04-20T20-57-05_93700000_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 | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -2.317 stddev = 0.010 reference, 0.731 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_luna (pass 1)
reference error = 0.307634 ppm, target error = -0.037913 ppm
Measured dist: -1.649628 target fitness: 1.480926 stddevs: 2.063885 target, 0.086094 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_luna (pass 2)
snr: 39.9 35.4 dB
reference error = -0.012318 ppm, target error = -0.011669 ppm
Measured dist: -2.316915 target fitness: 1.473672 stddevs: 0.730941 target, 0.009674 reference
gold result: -0.000000
| correlation 3987 | 2019-04-20T20-57-05_93700000_pankrac | 2019-04-20T20-57-05_93700000_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 | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.426 stddev = 0.005 reference, 0.810 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brmlab (pass 1)
reference error = 0.531825 ppm, target error = -0.002361 ppm
Measured dist: 0.712410 target fitness: 1.486824 stddevs: 3.916052 target, 0.146247 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brmlab (pass 2)
snr: 39.9 53.3 dB
reference error = -0.007661 ppm, target error = 0.162459 ppm
Measured dist: -1.425726 target fitness: 1.488603 stddevs: 0.809967 target, 0.004672 reference
gold result: -0.000000
| correlation 3988 | 2019-04-20T20-57-05_93700000_pankrac | 2019-04-20T20-57-05_93700000_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 | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 1.745 stddev = 0.004 reference, 0.790 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brevnov (pass 1)
reference error = -0.078396 ppm, target error = -0.116811 ppm
Measured dist: 1.823287 target fitness: 1.483931 stddevs: 1.032670 target, 0.022035 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_pankrac <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 39.9 41.8 dB
reference error = -0.002456 ppm, target error = -0.057330 ppm
Measured dist: 1.745386 target fitness: 1.483669 stddevs: 0.789543 target, 0.003885 reference
gold result: -0.000000
| correlation 3989 | 2019-04-20T20-57-05_93700000_luna | 2019-04-20T20-57-05_93700000_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 | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 1.416 stddev = 0.009 reference, 0.580 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brmlab (pass 1)
reference error = 0.220612 ppm, target error = 0.039325 ppm
Measured dist: 1.365271 target fitness: 1.494405 stddevs: 1.859642 target, 0.062325 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brmlab (pass 2)
snr: 35.4 53.1 dB
reference error = -0.002136 ppm, target error = 0.007784 ppm
Measured dist: 1.416009 target fitness: 1.488294 stddevs: 0.579608 target, 0.009121 reference
gold result: -0.000000
| correlation 3990 | 2019-04-20T20-57-05_93700000_luna | 2019-04-20T20-57-05_93700000_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 | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 3.969 stddev = 0.010 reference, 0.740 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brevnov (pass 1)
reference error = -0.392461 ppm, target error = 0.022328 ppm
Measured dist: 2.517825 target fitness: 1.486365 stddevs: 2.728852 target, 0.109291 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_luna <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 35.4 41.9 dB
reference error = 0.021675 ppm, target error = 0.003758 ppm
Measured dist: 3.969308 target fitness: 1.483947 stddevs: 0.739958 target, 0.009744 reference
gold result: -0.000000
| correlation 3991 | 2019-04-20T20-57-05_93700000_brmlab | 2019-04-20T20-57-05_93700000_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 | 93700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 2.721 stddev = 0.005 reference, 0.683 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-57-05_93700000_brmlab <--> 2019-04-20T20-57-05_93700000_brevnov (pass 1)
reference error = -0.610418 ppm, target error = -0.046547 ppm
Measured dist: 0.197910 target fitness: 1.504862 stddevs: 4.604474 target, 0.167106 reference
gold result: -0.000000
2019-04-20T20-57-05_93700000_brmlab <--> 2019-04-20T20-57-05_93700000_brevnov (pass 2)
snr: 53.0 41.9 dB
reference error = 0.008941 ppm, target error = -0.183805 ppm
Measured dist: 2.721162 target fitness: 1.497365 stddevs: 0.683035 target, 0.004714 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
