TDOA measurements at 89000 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 3890 | 2019-04-20T20-30-01_89500000_pankrac | 2019-04-20T20-30-01_89500000_luna |
|---|
| gain | [15, 15, 15, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -8.700 stddev = 0.013 reference, 3.062 target [samples]; known correct: -11.302 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_luna (pass 1)
reference error = 0.309667 ppm, target error = 0.087058 ppm
Measured dist: -9.037314 target fitness: 2.162297 stddevs: 3.474689 target, 0.085694 reference
gold result: -11.301848
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_luna (pass 2)
snr: 11.0 11.3 dB
reference error = 0.009828 ppm, target error = -0.003584 ppm
Measured dist: -8.700265 target fitness: 2.162254 stddevs: 3.061797 target, 0.012507 reference
gold result: -11.301848
| correlation 3891 | 2019-04-20T20-30-01_89500000_pankrac | 2019-04-20T20-30-01_89500000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -14.483 stddev = 0.008 reference, 1.059 target [samples]; known correct: -15.380 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brmlab (pass 1)
reference error = 0.511788 ppm, target error = 0.019005 ppm
Measured dist: -12.783977 target fitness: 2.217769 stddevs: 3.361757 target, 0.140529 reference
gold result: -15.379956
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brmlab (pass 2)
snr: 11.0 50.8 dB
reference error = 0.024983 ppm, target error = 0.062377 ppm
Measured dist: -14.482905 target fitness: 2.228347 stddevs: 1.058710 target, 0.008043 reference
gold result: -15.379956
| correlation 3892 | 2019-04-20T20-30-01_89500000_pankrac | 2019-04-20T20-30-01_89500000_brevnov |
|---|
| 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 | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 14.138 stddev = 0.004 reference, 2.628 target [samples]; known correct: 2.314 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brevnov (pass 1)
reference error = -0.072222 ppm, target error = -0.072867 ppm
Measured dist: 13.994599 target fitness: 1.995795 stddevs: 2.689212 target, 0.020421 reference
gold result: 2.314336
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 11.0 31.5 dB
reference error = -0.000409 ppm, target error = -0.095692 ppm
Measured dist: 14.138030 target fitness: 1.994806 stddevs: 2.627539 target, 0.003967 reference
gold result: 2.314336
| correlation 3893 | 2019-04-20T20-30-01_89500000_luna | 2019-04-20T20-30-01_89500000_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 | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -5.842 stddev = 0.007 reference, 1.425 target [samples]; known correct: -4.078 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brmlab (pass 1)
reference error = 0.206747 ppm, target error = 0.022201 ppm
Measured dist: -5.632049 target fitness: 2.171734 stddevs: 1.992574 target, 0.058455 reference
gold result: -4.078108
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brmlab (pass 2)
snr: 11.3 51.7 dB
reference error = -0.000106 ppm, target error = -0.059958 ppm
Measured dist: -5.841505 target fitness: 2.181758 stddevs: 1.424509 target, 0.006569 reference
gold result: -4.078108
| correlation 3894 | 2019-04-20T20-30-01_89500000_luna | 2019-04-20T20-30-01_89500000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 23.898 stddev = 0.011 reference, 3.650 target [samples]; known correct: 13.616 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brevnov (pass 1)
reference error = -0.400323 ppm, target error = -0.116408 ppm
Measured dist: 24.064431 target fitness: 1.970028 stddevs: 4.781829 target, 0.110026 reference
gold result: 13.616184
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 11.3 31.5 dB
reference error = 0.013336 ppm, target error = -0.020927 ppm
Measured dist: 23.897601 target fitness: 1.979782 stddevs: 3.650399 target, 0.011024 reference
gold result: 13.616184
| correlation 3895 | 2019-04-20T20-30-01_89500000_brmlab | 2019-04-20T20-30-01_89500000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 27.675 stddev = 0.008 reference, 1.723 target [samples]; known correct: 17.694 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-30-01_89500000_brmlab <--> 2019-04-20T20-30-01_89500000_brevnov (pass 1)
reference error = -0.576965 ppm, target error = -0.035316 ppm
Measured dist: 25.782175 target fitness: 1.974343 stddevs: 4.816142 target, 0.157843 reference
gold result: 17.694292
2019-04-20T20-30-01_89500000_brmlab <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 51.0 31.5 dB
reference error = -0.026730 ppm, target error = -0.083654 ppm
Measured dist: 27.675362 target fitness: 1.994003 stddevs: 1.722842 target, 0.008304 reference
gold result: 17.694292
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
