TDOA measurements at 91200 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 3926 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_luna |
|---|
| gain | [7, 7, 7, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 9.016 stddev = 0.010 reference, 0.922 target [samples]; known correct: 12.168 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_luna (pass 1)
reference error = 0.276693 ppm, target error = 0.061211 ppm
Measured dist: 8.495770 target fitness: 1.129851 stddevs: 1.801337 target, 0.076385 reference
gold result: 12.168451
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_luna (pass 2)
snr: 45.9 26.6 dB
reference error = -0.009229 ppm, target error = -0.013051 ppm
Measured dist: 9.016167 target fitness: 1.128995 stddevs: 0.922309 target, 0.010322 reference
gold result: 12.168451
| correlation 3927 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_brmlab |
|---|
| gain | [7, 7, 7, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 24.167 stddev = 0.007 reference, 0.852 target [samples]; known correct: 24.029 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brmlab (pass 1)
reference error = -0.409695 ppm, target error = -0.152848 ppm
Measured dist: 23.623799 target fitness: 1.111374 stddevs: 2.677217 target, 0.112154 reference
gold result: 24.028855
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brmlab (pass 2)
snr: 45.9 30.9 dB
reference error = 0.020289 ppm, target error = -0.097518 ppm
Measured dist: 24.167136 target fitness: 1.111659 stddevs: 0.852485 target, 0.007045 reference
gold result: 24.028855
| correlation 3928 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -26.844 stddev = 0.004 reference, 0.724 target [samples]; known correct: -34.387 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = -0.109846 ppm, target error = -0.107170 ppm
Measured dist: -26.835259 target fitness: 1.106078 stddevs: 1.047687 target, 0.029987 reference
gold result: -34.387361
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 45.9 45.0 dB
reference error = 0.001968 ppm, target error = 0.012729 ppm
Measured dist: -26.843923 target fitness: 1.109682 stddevs: 0.724282 target, 0.004130 reference
gold result: -34.387361
| correlation 3929 | 2019-04-20T20-35-49_90300000_luna | 2019-04-20T20-35-49_90300000_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 | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 15.324 stddev = 0.016 reference, 1.185 target [samples]; known correct: 11.860 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brmlab (pass 1)
reference error = -0.688082 ppm, target error = -0.240724 ppm
Measured dist: 15.357282 target fitness: 1.146190 stddevs: 15.284916 target, 0.187831 reference
gold result: 11.860404
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brmlab (pass 2)
snr: 26.6 32.0 dB
reference error = 0.038105 ppm, target error = 0.057001 ppm
Measured dist: 15.323663 target fitness: 1.129228 stddevs: 1.184879 target, 0.016467 reference
gold result: 11.860404
| correlation 3930 | 2019-04-20T20-35-49_90300000_luna | 2019-04-20T20-35-49_90300000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -35.699 stddev = 0.012 reference, 1.192 target [samples]; known correct: -46.556 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = -0.347548 ppm, target error = -0.114982 ppm
Measured dist: -35.097191 target fitness: 1.125852 stddevs: 2.705674 target, 0.096254 reference
gold result: -46.555812
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 26.6 45.0 dB
reference error = -0.025425 ppm, target error = -0.021108 ppm
Measured dist: -35.698646 target fitness: 1.123405 stddevs: 1.191639 target, 0.011776 reference
gold result: -46.555812
| correlation 3931 | 2019-04-20T20-35-49_90300000_brmlab | 2019-04-20T20-35-49_90300000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -50.222 stddev = 0.005 reference, 0.786 target [samples]; known correct: -58.416 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-35-49_90300000_brmlab <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = 0.293922 ppm, target error = 0.026799 ppm
Measured dist: -50.169822 target fitness: 1.115270 stddevs: 1.993964 target, 0.080124 reference
gold result: -58.416216
2019-04-20T20-35-49_90300000_brmlab <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 31.0 45.0 dB
reference error = -0.009567 ppm, target error = 0.124484 ppm
Measured dist: -50.222404 target fitness: 1.119212 stddevs: 0.786462 target, 0.004801 reference
gold result: -58.416216
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
