TDOA measurements at 93700 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 3998 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_luna |
|---|
| gain | [8, 8, 8, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.560 stddev = 0.016 reference, 0.740 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_luna (pass 1)
reference error = 0.254754 ppm, target error = 0.051125 ppm
Measured dist: -1.894101 target fitness: 1.406447 stddevs: 2.384465 target, 0.069949 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_luna (pass 2)
snr: 45.4 35.4 dB
reference error = 0.040613 ppm, target error = 0.044259 ppm
Measured dist: -1.560335 target fitness: 1.409838 stddevs: 0.740093 target, 0.016220 reference
gold result: -0.000000
| correlation 3999 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.333 stddev = 0.006 reference, 0.600 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brmlab (pass 1)
reference error = -0.384269 ppm, target error = 0.010698 ppm
Measured dist: -0.782335 target fitness: 1.405002 stddevs: 3.204517 target, 0.104508 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brmlab (pass 2)
snr: 45.4 52.3 dB
reference error = 0.014576 ppm, target error = -0.027837 ppm
Measured dist: -1.333269 target fitness: 1.406372 stddevs: 0.599694 target, 0.005669 reference
gold result: -0.000000
| correlation 4000 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -8.381 stddev = 0.004 reference, 3.330 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = -0.094468 ppm, target error = -0.036069 ppm
Measured dist: -7.671606 target fitness: 1.451405 stddevs: 3.423437 target, 0.026387 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 45.4 35.3 dB
reference error = 0.005621 ppm, target error = -0.006869 ppm
Measured dist: -8.381127 target fitness: 1.451203 stddevs: 3.330209 target, 0.004405 reference
gold result: -0.000000
| correlation 4001 | 2019-04-20T21-03-18_94600000_luna | 2019-04-20T21-03-18_94600000_brmlab |
|---|
| gain | [10, 10, 10, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 0.433 stddev = 0.017 reference, 0.835 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brmlab (pass 1)
reference error = -0.702520 ppm, target error = -0.030110 ppm
Measured dist: 1.276226 target fitness: 1.414713 stddevs: 5.415236 target, 0.188396 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brmlab (pass 2)
snr: 35.4 53.8 dB
reference error = 0.041943 ppm, target error = 0.052892 ppm
Measured dist: 0.433496 target fitness: 1.410983 stddevs: 0.834827 target, 0.017383 reference
gold result: -0.000000
| correlation 4002 | 2019-04-20T21-03-18_94600000_luna | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -5.951 stddev = 0.013 reference, 3.030 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = -0.397918 ppm, target error = -0.027594 ppm
Measured dist: -3.627487 target fitness: 1.454653 stddevs: 4.179564 target, 0.110107 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 35.4 35.3 dB
reference error = 0.019760 ppm, target error = -0.006952 ppm
Measured dist: -5.951118 target fitness: 1.457389 stddevs: 3.030288 target, 0.012584 reference
gold result: -0.000000
| correlation 4003 | 2019-04-20T21-03-18_94600000_brmlab | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -6.527 stddev = 0.007 reference, 2.757 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_brmlab <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = 0.258172 ppm, target error = -0.047473 ppm
Measured dist: -3.836977 target fitness: 1.465278 stddevs: 3.551204 target, 0.071031 reference
gold result: -0.000000
2019-04-20T21-03-18_94600000_brmlab <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 52.6 35.3 dB
reference error = 0.022634 ppm, target error = 0.054271 ppm
Measured dist: -6.526576 target fitness: 1.464826 stddevs: 2.756753 target, 0.007428 reference
gold result: -0.000000
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
