TDOA measurements at 102900 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 4346 | 2019-04-20T23-44-20_102700000_pankrac | 2019-04-20T23-44-20_102700000_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 | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 33.069 stddev = 0.006 reference, 0.447 target [samples]; known correct: 34.954 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_luna (pass 1)
reference error = 0.304324 ppm, target error = -0.018060 ppm
Measured dist: 32.779475 target fitness: 2.169871 stddevs: 1.934855 target, 0.081746 reference
gold result: 34.954401
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_luna (pass 2)
snr: 38.0 29.0 dB
reference error = -0.013601 ppm, target error = -0.032309 ppm
Measured dist: 33.069477 target fitness: 2.178249 stddevs: 0.447259 target, 0.006145 reference
gold result: 34.954401
| correlation 4347 | 2019-04-20T23-44-20_102700000_pankrac | 2019-04-20T23-44-20_102700000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 38.204 stddev = 0.006 reference, 0.527 target [samples]; known correct: 41.884 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brmlab (pass 1)
reference error = -0.356952 ppm, target error = 0.007853 ppm
Measured dist: 38.908516 target fitness: 2.201243 stddevs: 2.612551 target, 0.097297 reference
gold result: 41.883851
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brmlab (pass 2)
snr: 38.0 35.4 dB
reference error = -0.014264 ppm, target error = -0.025251 ppm
Measured dist: 38.203603 target fitness: 2.207442 stddevs: 0.527002 target, 0.005780 reference
gold result: 41.883851
| correlation 4348 | 2019-04-20T23-44-20_102700000_pankrac | 2019-04-20T23-44-20_102700000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -24.535 stddev = 0.004 reference, 2.479 target [samples]; known correct: -23.634 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brevnov (pass 1)
reference error = -0.021349 ppm, target error = -0.022954 ppm
Measured dist: -23.626056 target fitness: 1.649348 stddevs: 2.484046 target, 0.006958 reference
gold result: -23.634450
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 38.0 29.4 dB
reference error = 0.000129 ppm, target error = -0.070582 ppm
Measured dist: -24.534768 target fitness: 1.649318 stddevs: 2.478559 target, 0.004361 reference
gold result: -23.634450
| correlation 4349 | 2019-04-20T23-44-20_102700000_luna | 2019-04-20T23-44-20_102700000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 5.288 stddev = 0.008 reference, 0.416 target [samples]; known correct: 6.929 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brmlab (pass 1)
reference error = -0.672284 ppm, target error = 0.057860 ppm
Measured dist: 7.185632 target fitness: 2.177783 stddevs: 4.358467 target, 0.180971 reference
gold result: 6.929450
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brmlab (pass 2)
snr: 29.0 35.6 dB
reference error = 0.016124 ppm, target error = 0.033789 ppm
Measured dist: 5.288154 target fitness: 2.206423 stddevs: 0.415529 target, 0.007570 reference
gold result: 6.929450
| correlation 4350 | 2019-04-20T23-44-20_102700000_luna | 2019-04-20T23-44-20_102700000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -58.673 stddev = 0.006 reference, 2.406 target [samples]; known correct: -58.589 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brevnov (pass 1)
reference error = -0.320198 ppm, target error = -0.052887 ppm
Measured dist: -58.250353 target fitness: 1.675756 stddevs: 3.043659 target, 0.086610 reference
gold result: -58.588851
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 29.0 29.4 dB
reference error = 0.011224 ppm, target error = -0.044141 ppm
Measured dist: -58.672856 target fitness: 1.682549 stddevs: 2.406059 target, 0.005844 reference
gold result: -58.588851
| correlation 4351 | 2019-04-20T23-44-20_102700000_brmlab | 2019-04-20T23-44-20_102700000_brevnov |
|---|
| gain | [5, 5, 5, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -63.161 stddev = 0.005 reference, 2.367 target [samples]; known correct: -65.518 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_brmlab <--> 2019-04-20T23-44-20_102700000_brevnov (pass 1)
reference error = 0.359323 ppm, target error = 0.048114 ppm
Measured dist: -63.466722 target fitness: 1.705273 stddevs: 3.235847 target, 0.096853 reference
gold result: -65.518301
2019-04-20T23-44-20_102700000_brmlab <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 35.4 29.4 dB
reference error = -0.012015 ppm, target error = -0.014408 ppm
Measured dist: -63.160824 target fitness: 1.709068 stddevs: 2.367035 target, 0.004975 reference
gold result: -65.518301
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
