TDOA measurements at 770000 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 3824 | 2019-04-20T20-01-56_770000000_pankrac | 2019-04-20T20-01-56_770000000_luna |
|---|
| gain | [15, 15, 15, 1] | [14, 14, 14, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 770000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -102.717 stddev = 0.011 reference, 13.551 target [samples]; known correct: -66.151 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-01-56_770000000_pankrac <--> 2019-04-20T20-01-56_770000000_luna (pass 1)
reference error = 0.247756 ppm, target error = 0.260374 ppm
Measured dist: -102.681428 target fitness: 5.207535 stddevs: 15.010267 target, 0.069258 reference
gold result: -66.151099
2019-04-20T20-01-56_770000000_pankrac <--> 2019-04-20T20-01-56_770000000_luna (pass 2)
snr: 4.3 2.9 dB
reference error = -0.012444 ppm, target error = 0.023263 ppm
Measured dist: -102.717027 target fitness: 10.963302 stddevs: 13.550961 target, 0.011134 reference
gold result: -66.151099
| correlation 3825 | 2019-04-20T20-01-56_770000000_pankrac | 2019-04-20T20-01-56_770000000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 770000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -14.958 stddev = 0.005 reference, 10.541 target [samples]; known correct: -8.895 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-01-56_770000000_pankrac <--> 2019-04-20T20-01-56_770000000_brmlab (pass 1)
reference error = -0.390632 ppm, target error = 0.203244 ppm
Measured dist: -36.335222 target fitness: 2.687788 stddevs: 70.448563 target, 0.106586 reference
gold result: -8.894771
2019-04-20T20-01-56_770000000_pankrac <--> 2019-04-20T20-01-56_770000000_brmlab (pass 2)
snr: 4.4 4.1 dB
reference error = 0.007233 ppm, target error = 0.014268 ppm
Measured dist: -14.958500 target fitness: 4.503261 stddevs: 10.541119 target, 0.004501 reference
gold result: -8.894771
| correlation 3826 | 2019-04-20T20-01-56_770000000_pankrac | 2019-04-20T20-01-56_770000000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [13, 13, 13, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 770000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -91.969 stddev = 0.004 reference, 2.585 target [samples]; known correct: -55.191 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-01-56_770000000_pankrac <--> 2019-04-20T20-01-56_770000000_brevnov (pass 1)
reference error = -0.109297 ppm, target error = -0.137174 ppm
Measured dist: -91.931184 target fitness: 9.080515 stddevs: 7.765145 target, 0.030342 reference
gold result: -55.190761
2019-04-20T20-01-56_770000000_pankrac <--> 2019-04-20T20-01-56_770000000_brevnov (pass 2)
snr: 4.3 13.3 dB
reference error = -0.000870 ppm, target error = -0.002484 ppm
Measured dist: -91.968615 target fitness: 9.818205 stddevs: 2.584640 target, 0.003842 reference
gold result: -55.190761
| correlation 3827 | 2019-04-20T20-01-56_770000000_luna | 2019-04-20T20-01-56_770000000_brmlab |
|---|
| gain | [14, 14, 14, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 770000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 57.386 stddev = 0.012 reference, 0.128 target [samples]; known correct: 57.256 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-01-56_770000000_luna <--> 2019-04-20T20-01-56_770000000_brmlab (pass 1)
reference error = -0.619443 ppm, target error = -0.511067 ppm
Measured dist: 57.645679 target fitness: 2.916311 stddevs: 43.573051 target, 0.170636 reference
gold result: 57.256327
2019-04-20T20-01-56_770000000_luna <--> 2019-04-20T20-01-56_770000000_brmlab (pass 2)
snr: 2.9 3.1 dB
reference error = 0.009517 ppm, target error = -0.022681 ppm
Measured dist: 57.385857 target fitness: 17.757687 stddevs: 0.128458 target, 0.012451 reference
gold result: 57.256327
| correlation 3828 | 2019-04-20T20-01-56_770000000_luna | 2019-04-20T20-01-56_770000000_brevnov |
|---|
| gain | [14, 14, 14, 1] | [13, 13, 13, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 770000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 10.815 stddev = 0.010 reference, 0.036 target [samples]; known correct: 10.960 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-01-56_770000000_luna <--> 2019-04-20T20-01-56_770000000_brevnov (pass 1)
reference error = -0.355926 ppm, target error = -0.363698 ppm
Measured dist: 10.830532 target fitness: 2.817106 stddevs: 50.972450 target, 0.098843 reference
gold result: 10.960337
2019-04-20T20-01-56_770000000_luna <--> 2019-04-20T20-01-56_770000000_brevnov (pass 2)
snr: 3.0 13.3 dB
reference error = 0.012269 ppm, target error = -0.019843 ppm
Measured dist: 10.814769 target fitness: 41.632874 stddevs: 0.036152 target, 0.010353 reference
gold result: 10.960337
| correlation 3829 | 2019-04-20T20-01-56_770000000_brmlab | 2019-04-20T20-01-56_770000000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [13, 13, 13, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 770000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -46.594 stddev = 0.005 reference, 0.078 target [samples]; known correct: -46.296 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-01-56_770000000_brmlab <--> 2019-04-20T20-01-56_770000000_brevnov (pass 1)
reference error = 0.289627 ppm, target error = 0.199328 ppm
Measured dist: -46.524757 target fitness: 6.548132 stddevs: 0.577673 target, 0.079550 reference
gold result: -46.295990
2019-04-20T20-01-56_770000000_brmlab <--> 2019-04-20T20-01-56_770000000_brevnov (pass 2)
snr: 3.8 13.3 dB
reference error = -0.010282 ppm, target error = -0.006483 ppm
Measured dist: -46.594232 target fitness: 16.408402 stddevs: 0.077510 target, 0.004659 reference
gold result: -46.295990
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
