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 4082 | 2019-04-20T21-28-35_99700000_pankrac | 2019-04-20T21-28-35_99700000_brmlab |
|---|
| gain | [1, 1, 1, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 39.339 stddev = 0.005 reference, 65.635 target [samples]; known correct: 29.906 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_brmlab (pass 1)
reference error = 0.538906 ppm, target error = 0.150622 ppm
Measured dist: 43.492009 target fitness: 1.713647 stddevs: 67.039795 target, 0.148419 reference
gold result: 29.906227
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_brmlab (pass 2)
snr: 0.8 10.1 dB
reference error = -0.008010 ppm, target error = 0.134946 ppm
Measured dist: 39.338883 target fitness: 1.721596 stddevs: 65.634628 target, 0.004893 reference
gold result: 29.906227
| correlation 4083 | 2019-04-20T21-28-35_99700000_pankrac | 2019-04-20T21-28-35_99700000_luna |
|---|
| gain | [1, 1, 1, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 128.676 stddev = 0.008 reference, 70.396 target [samples]; known correct: 1.996 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_luna (pass 1)
reference error = 0.290155 ppm, target error = 0.322710 ppm
Measured dist: 129.327555 target fitness: 1.931155 stddevs: 71.025925 target, 0.079866 reference
gold result: 1.996483
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_luna (pass 2)
snr: 0.8 6.3 dB
reference error = -0.008502 ppm, target error = 0.297014 ppm
Measured dist: 128.676418 target fitness: 1.906636 stddevs: 70.395500 target, 0.008028 reference
gold result: 1.996483
| correlation 4084 | 2019-04-20T21-28-35_99700000_pankrac | 2019-04-20T21-28-35_99700000_brevnov |
|---|
| gain | [1, 1, 1, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 130.799 stddev = 0.004 reference, 71.520 target [samples]; known correct: -53.190 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_brevnov (pass 1)
reference error = -0.094854 ppm, target error = -0.025099 ppm
Measured dist: 130.686323 target fitness: 1.625954 stddevs: 72.237457 target, 0.026042 reference
gold result: -53.189553
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_brevnov (pass 2)
snr: 0.8 16.3 dB
reference error = 0.001656 ppm, target error = -0.018955 ppm
Measured dist: 130.798754 target fitness: 1.627769 stddevs: 71.520393 target, 0.003803 reference
gold result: -53.189553
| correlation 4085 | 2019-04-20T21-28-35_99700000_brmlab | 2019-04-20T21-28-35_99700000_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 | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -29.948 stddev = 0.008 reference, 10.551 target [samples]; known correct: -27.910 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_brmlab <--> 2019-04-20T21-28-35_99700000_luna (pass 1)
reference error = -0.239881 ppm, target error = -0.045193 ppm
Measured dist: -26.436669 target fitness: 1.747621 stddevs: 11.143479 target, 0.066749 reference
gold result: -27.909744
2019-04-20T21-28-35_99700000_brmlab <--> 2019-04-20T21-28-35_99700000_luna (pass 2)
snr: 10.2 6.3 dB
reference error = 0.000283 ppm, target error = -0.004091 ppm
Measured dist: -29.947509 target fitness: 1.759705 stddevs: 10.550529 target, 0.007739 reference
gold result: -27.909744
| correlation 4086 | 2019-04-20T21-28-35_99700000_brmlab | 2019-04-20T21-28-35_99700000_brevnov |
|---|
| gain | [5, 5, 5, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -83.472 stddev = 0.005 reference, 4.099 target [samples]; known correct: -83.096 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-28-35_99700000_brmlab <--> 2019-04-20T21-28-35_99700000_brevnov (pass 1)
reference error = -0.633042 ppm, target error = -0.008769 ppm
Measured dist: -83.832525 target fitness: 1.882929 stddevs: 7.622428 target, 0.174090 reference
gold result: -83.095780
2019-04-20T21-28-35_99700000_brmlab <--> 2019-04-20T21-28-35_99700000_brevnov (pass 2)
snr: 10.2 16.3 dB
reference error = 0.011588 ppm, target error = -0.033393 ppm
Measured dist: -83.472182 target fitness: 1.928260 stddevs: 4.098719 target, 0.005250 reference
gold result: -83.095780
| correlation 4087 | 2019-04-20T21-28-35_99700000_luna | 2019-04-20T21-28-35_99700000_brevnov |
|---|
| 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 | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -53.682 stddev = 0.010 reference, 8.105 target [samples]; known correct: -55.186 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_luna <--> 2019-04-20T21-28-35_99700000_brevnov (pass 1)
reference error = -0.393270 ppm, target error = 0.043067 ppm
Measured dist: -54.531388 target fitness: 1.809407 stddevs: 9.061538 target, 0.107319 reference
gold result: -55.186036
2019-04-20T21-28-35_99700000_luna <--> 2019-04-20T21-28-35_99700000_brevnov (pass 2)
snr: 6.3 16.3 dB
reference error = 0.020665 ppm, target error = -0.073001 ppm
Measured dist: -53.682079 target fitness: 1.813496 stddevs: 8.104730 target, 0.009541 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
