TDOA measurements at 722000 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 3830 | 2019-04-20T20-03-37_722000000_pankrac | 2019-04-20T20-03-37_722000000_brmlab |
|---|
| 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 | 722000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -25.036 stddev = 0.004 reference, 68.446 target [samples]; known correct: -23.986 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-03-37_722000000_pankrac <--> 2019-04-20T20-03-37_722000000_brmlab (pass 1)
reference error = 0.517830 ppm, target error = 0.191207 ppm
Measured dist: 113.613126 target fitness: 2.693622 stddevs: 72.641159 target, 0.141572 reference
gold result: -23.986421
2019-04-20T20-03-37_722000000_pankrac <--> 2019-04-20T20-03-37_722000000_brmlab (pass 2)
snr: 3.3 4.6 dB
reference error = -0.004061 ppm, target error = 0.105350 ppm
Measured dist: -25.036470 target fitness: 2.698291 stddevs: 68.445518 target, 0.004037 reference
gold result: -23.986421
| correlation 3831 | 2019-04-20T20-03-37_722000000_pankrac | 2019-04-20T20-03-37_722000000_luna |
|---|
| 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 | 722000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -81.277 stddev = 0.011 reference, 0.054 target [samples]; known correct: -79.709 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-03-37_722000000_pankrac <--> 2019-04-20T20-03-37_722000000_luna (pass 1)
reference error = 0.226243 ppm, target error = 0.280591 ppm
Measured dist: -81.277275 target fitness: 3.535050 stddevs: 13.659255 target, 0.060434 reference
gold result: -79.708515
2019-04-20T20-03-37_722000000_pankrac <--> 2019-04-20T20-03-37_722000000_luna (pass 2)
snr: 3.3 5.5 dB
reference error = 0.022101 ppm, target error = 0.028547 ppm
Measured dist: -81.277277 target fitness: 9.425433 stddevs: 0.053807 target, 0.010941 reference
gold result: -79.708515
| correlation 3832 | 2019-04-20T20-03-37_722000000_pankrac | 2019-04-20T20-03-37_722000000_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 | 722000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -32.091 stddev = 0.004 reference, 0.042 target [samples]; known correct: -30.718 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-03-37_722000000_pankrac <--> 2019-04-20T20-03-37_722000000_brevnov (pass 1)
reference error = -0.104823 ppm, target error = -0.073484 ppm
Measured dist: -32.130611 target fitness: 11.669766 stddevs: 0.109540 target, 0.028945 reference
gold result: -30.718217
2019-04-20T20-03-37_722000000_pankrac <--> 2019-04-20T20-03-37_722000000_brevnov (pass 2)
snr: 3.3 7.3 dB
reference error = -0.001384 ppm, target error = -0.004367 ppm
Measured dist: -32.091220 target fitness: 13.063893 stddevs: 0.042127 target, 0.003781 reference
gold result: -30.718217
| correlation 3833 | 2019-04-20T20-03-37_722000000_brmlab | 2019-04-20T20-03-37_722000000_luna |
|---|
| gain | [13, 13, 13, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 722000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -55.992 stddev = 0.010 reference, 4.279 target [samples]; known correct: -55.722 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-03-37_722000000_brmlab <--> 2019-04-20T20-03-37_722000000_luna (pass 1)
reference error = -0.267453 ppm, target error = -0.235825 ppm
Measured dist: -55.953637 target fitness: 2.767756 stddevs: 58.504585 target, 0.072363 reference
gold result: -55.722094
2019-04-20T20-03-37_722000000_brmlab <--> 2019-04-20T20-03-37_722000000_luna (pass 2)
snr: 5.3 5.5 dB
reference error = 0.005549 ppm, target error = 0.029839 ppm
Measured dist: -55.991537 target fitness: 3.478403 stddevs: 4.278951 target, 0.009614 reference
gold result: -55.722094
| correlation 3834 | 2019-04-20T20-03-37_722000000_brmlab | 2019-04-20T20-03-37_722000000_brevnov |
|---|
| gain | [13, 13, 13, 1] | [13, 13, 13, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 722000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -6.891 stddev = 0.006 reference, 1.187 target [samples]; known correct: -6.732 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-03-37_722000000_brmlab <--> 2019-04-20T20-03-37_722000000_brevnov (pass 1)
reference error = -0.626494 ppm, target error = -0.460821 ppm
Measured dist: -7.080667 target fitness: 2.692360 stddevs: 65.853668 target, 0.171796 reference
gold result: -6.731796
2019-04-20T20-03-37_722000000_brmlab <--> 2019-04-20T20-03-37_722000000_brevnov (pass 2)
snr: 5.0 7.3 dB
reference error = 0.012749 ppm, target error = 0.022473 ppm
Measured dist: -6.891302 target fitness: 4.728241 stddevs: 1.186955 target, 0.005524 reference
gold result: -6.731796
| correlation 3835 | 2019-04-20T20-03-37_722000000_luna | 2019-04-20T20-03-37_722000000_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 | 722000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 49.170 stddev = 0.009 reference, 0.039 target [samples]; known correct: 48.990 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-03-37_722000000_luna <--> 2019-04-20T20-03-37_722000000_brevnov (pass 1)
reference error = -0.358781 ppm, target error = -0.374108 ppm
Measured dist: 49.173465 target fitness: 2.823936 stddevs: 48.685097 target, 0.096934 reference
gold result: 48.990299
2019-04-20T20-03-37_722000000_luna <--> 2019-04-20T20-03-37_722000000_brevnov (pass 2)
snr: 5.6 7.4 dB
reference error = 0.009171 ppm, target error = -0.020904 ppm
Measured dist: 49.170072 target fitness: 34.538811 stddevs: 0.038815 target, 0.009114 reference
gold result: 48.990299
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
