TDOA measurements at 100500 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 4124 | 2019-04-20T21-54-59_101100000_pankrac | 2019-04-20T21-54-59_101100000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -116.340 stddev = 0.007 reference, 79.281 target [samples]; known correct: 29.906 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_brmlab (pass 1)
reference error = -0.362041 ppm, target error = 0.285734 ppm
Measured dist: 128.780035 target fitness: 1.725017 stddevs: 77.894882 target, 0.098851 reference
gold result: 29.906227
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_brmlab (pass 2)
snr: 3.7 8.6 dB
reference error = 0.016968 ppm, target error = -0.013953 ppm
Measured dist: -116.340309 target fitness: 1.742696 stddevs: 79.281418 target, 0.006556 reference
gold result: 29.906227
| correlation 4125 | 2019-04-20T21-54-59_101100000_pankrac | 2019-04-20T21-54-59_101100000_luna |
|---|
| gain | [15, 15, 15, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -121.045 stddev = 0.013 reference, 74.584 target [samples]; known correct: 1.996 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_luna (pass 1)
reference error = 0.272358 ppm, target error = -0.108846 ppm
Measured dist: 125.133789 target fitness: 1.877215 stddevs: 75.054611 target, 0.074875 reference
gold result: 1.996483
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_luna (pass 2)
snr: 3.7 5.2 dB
reference error = 0.037526 ppm, target error = 0.100887 ppm
Measured dist: -121.044998 target fitness: 1.872760 stddevs: 74.583763 target, 0.013010 reference
gold result: 1.996483
| correlation 4126 | 2019-04-20T21-54-59_101100000_pankrac | 2019-04-20T21-54-59_101100000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 125.962 stddev = 0.004 reference, 78.369 target [samples]; known correct: -53.190 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_brevnov (pass 1)
reference error = 0.006047 ppm, target error = -0.031207 ppm
Measured dist: 125.998548 target fitness: 1.642648 stddevs: 78.457413 target, 0.004928 reference
gold result: -53.189553
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_brevnov (pass 2)
snr: 3.7 14.7 dB
reference error = 0.001808 ppm, target error = -0.038877 ppm
Measured dist: 125.961651 target fitness: 1.639326 stddevs: 78.368950 target, 0.004048 reference
gold result: -53.189553
| correlation 4127 | 2019-04-20T21-54-59_101100000_brmlab | 2019-04-20T21-54-59_101100000_luna |
|---|
| gain | [5, 5, 5, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -29.938 stddev = 0.009 reference, 12.703 target [samples]; known correct: -27.910 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-54-59_101100000_brmlab <--> 2019-04-20T21-54-59_101100000_luna (pass 1)
reference error = 0.667996 ppm, target error = -0.085377 ppm
Measured dist: -32.695590 target fitness: 1.652641 stddevs: 15.746532 target, 0.179810 reference
gold result: -27.909744
2019-04-20T21-54-59_101100000_brmlab <--> 2019-04-20T21-54-59_101100000_luna (pass 2)
snr: 8.5 5.2 dB
reference error = -0.019627 ppm, target error = 0.020391 ppm
Measured dist: -29.937805 target fitness: 1.635712 stddevs: 12.702871 target, 0.008825 reference
gold result: -27.909744
| correlation 4128 | 2019-04-20T21-54-59_101100000_brmlab | 2019-04-20T21-54-59_101100000_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 | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -83.954 stddev = 0.005 reference, 5.029 target [samples]; known correct: -83.096 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-54-59_101100000_brmlab <--> 2019-04-20T21-54-59_101100000_brevnov (pass 1)
reference error = 0.360806 ppm, target error = 0.053221 ppm
Measured dist: -84.166582 target fitness: 1.724040 stddevs: 6.292338 target, 0.097774 reference
gold result: -83.095780
2019-04-20T21-54-59_101100000_brmlab <--> 2019-04-20T21-54-59_101100000_brevnov (pass 2)
snr: 8.6 14.7 dB
reference error = -0.010903 ppm, target error = 0.037731 ppm
Measured dist: -83.954173 target fitness: 1.726127 stddevs: 5.028616 target, 0.004808 reference
gold result: -83.095780
| correlation 4129 | 2019-04-20T21-54-59_101100000_luna | 2019-04-20T21-54-59_101100000_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 | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -55.001 stddev = 0.008 reference, 8.506 target [samples]; known correct: -55.186 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-54-59_101100000_luna <--> 2019-04-20T21-54-59_101100000_brevnov (pass 1)
reference error = -0.313000 ppm, target error = -0.024933 ppm
Measured dist: -54.641401 target fitness: 1.667622 stddevs: 8.948573 target, 0.085266 reference
gold result: -55.186036
2019-04-20T21-54-59_101100000_luna <--> 2019-04-20T21-54-59_101100000_brevnov (pass 2)
snr: 5.2 14.7 dB
reference error = 0.015465 ppm, target error = 0.033948 ppm
Measured dist: -55.001252 target fitness: 1.667097 stddevs: 8.505993 target, 0.007977 reference
gold result: -55.186036
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
