TDOA measurements at 105900 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 4322 | 2019-04-20T23-26-35_105900000_pankrac | 2019-04-20T23-26-35_105900000_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 | 105900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -35.313 stddev = 0.011 reference, 4.848 target [samples]; known correct: -41.645 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-26-35_105900000_pankrac <--> 2019-04-20T23-26-35_105900000_luna (pass 1)
reference error = 0.288135 ppm, target error = -0.009208 ppm
Measured dist: -35.777172 target fitness: 2.030428 stddevs: 5.514069 target, 0.079736 reference
gold result: -41.645325
2019-04-20T23-26-35_105900000_pankrac <--> 2019-04-20T23-26-35_105900000_luna (pass 2)
snr: 33.0 27.9 dB
reference error = -0.000935 ppm, target error = 0.020659 ppm
Measured dist: -35.313031 target fitness: 2.021559 stddevs: 4.848475 target, 0.011273 reference
gold result: -41.645325
| correlation 4323 | 2019-04-20T23-26-35_105900000_pankrac | 2019-04-20T23-26-35_105900000_brmlab |
|---|
| 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 | 105900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -5.616 stddev = 0.006 reference, 1.196 target [samples]; known correct: -2.870 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T23-26-35_105900000_pankrac <--> 2019-04-20T23-26-35_105900000_brmlab (pass 1)
reference error = -0.381143 ppm, target error = 0.008950 ppm
Measured dist: -8.463160 target fitness: 2.076766 stddevs: 3.375532 target, 0.104141 reference
gold result: -2.869775
2019-04-20T23-26-35_105900000_pankrac <--> 2019-04-20T23-26-35_105900000_brmlab (pass 2)
snr: 33.0 33.5 dB
reference error = 0.016493 ppm, target error = -0.065819 ppm
Measured dist: -5.616091 target fitness: 2.089538 stddevs: 1.196345 target, 0.006276 reference
gold result: -2.869775
| correlation 4324 | 2019-04-20T23-26-35_105900000_pankrac | 2019-04-20T23-26-35_105900000_brevnov |
|---|
| 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 | 105900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -36.450 stddev = 0.004 reference, 1.364 target [samples]; known correct: -42.720 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-26-35_105900000_pankrac <--> 2019-04-20T23-26-35_105900000_brevnov (pass 1)
reference error = -0.022357 ppm, target error = -0.073347 ppm
Measured dist: -36.507205 target fitness: 2.190936 stddevs: 1.405921 target, 0.007384 reference
gold result: -42.719992
2019-04-20T23-26-35_105900000_pankrac <--> 2019-04-20T23-26-35_105900000_brevnov (pass 2)
snr: 33.0 61.1 dB
reference error = 0.002674 ppm, target error = -0.076949 ppm
Measured dist: -36.450037 target fitness: 2.190825 stddevs: 1.363526 target, 0.003942 reference
gold result: -42.719992
| correlation 4325 | 2019-04-20T23-26-35_105900000_luna | 2019-04-20T23-26-35_105900000_brmlab |
|---|
| 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 | 105900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 34.718 stddev = 0.016 reference, 4.661 target [samples]; known correct: 38.776 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-26-35_105900000_luna <--> 2019-04-20T23-26-35_105900000_brmlab (pass 1)
reference error = -0.682873 ppm, target error = -0.031782 ppm
Measured dist: 37.371673 target fitness: 1.994353 stddevs: 7.448050 target, 0.187548 reference
gold result: 38.775550
2019-04-20T23-26-35_105900000_luna <--> 2019-04-20T23-26-35_105900000_brmlab (pass 2)
snr: 27.9 32.6 dB
reference error = 0.036656 ppm, target error = 0.026958 ppm
Measured dist: 34.717710 target fitness: 2.024078 stddevs: 4.660590 target, 0.015775 reference
gold result: 38.775550
| correlation 4326 | 2019-04-20T23-26-35_105900000_luna | 2019-04-20T23-26-35_105900000_brevnov |
|---|
| 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 | 105900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 2.756 stddev = 0.011 reference, 3.388 target [samples]; known correct: -1.075 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-26-35_105900000_luna <--> 2019-04-20T23-26-35_105900000_brevnov (pass 1)
reference error = -0.309348 ppm, target error = -0.045215 ppm
Measured dist: 3.079985 target fitness: 1.953127 stddevs: 4.297415 target, 0.085466 reference
gold result: -1.074668
2019-04-20T23-26-35_105900000_luna <--> 2019-04-20T23-26-35_105900000_brevnov (pass 2)
snr: 27.9 61.1 dB
reference error = 0.004591 ppm, target error = 0.013960 ppm
Measured dist: 2.755789 target fitness: 1.962752 stddevs: 3.388136 target, 0.011445 reference
gold result: -1.074668
| correlation 4327 | 2019-04-20T23-26-35_105900000_brmlab | 2019-04-20T23-26-35_105900000_brevnov |
|---|
| 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 | 105900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -31.850 stddev = 0.004 reference, 1.037 target [samples]; known correct: -39.850 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-26-35_105900000_brmlab <--> 2019-04-20T23-26-35_105900000_brevnov (pass 1)
reference error = 0.349832 ppm, target error = 0.068053 ppm
Measured dist: -33.235717 target fitness: 2.130893 stddevs: 2.909514 target, 0.095384 reference
gold result: -39.850218
2019-04-20T23-26-35_105900000_brmlab <--> 2019-04-20T23-26-35_105900000_brevnov (pass 2)
snr: 33.4 61.1 dB
reference error = -0.007532 ppm, target error = -0.020898 ppm
Measured dist: -31.849696 target fitness: 2.136874 stddevs: 1.036897 target, 0.004333 reference
gold result: -39.850218
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
