TDOA measurements at 90700 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 3920 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_luna |
|---|
| gain | [7, 7, 7, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 16.713 stddev = 0.010 reference, 1.345 target [samples]; known correct: 17.803 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_luna (pass 1)
reference error = 0.276693 ppm, target error = -0.084805 ppm
Measured dist: 18.314437 target fitness: 1.297304 stddevs: 3.045512 target, 0.076385 reference
gold result: 17.802583
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_luna (pass 2)
snr: 37.6 30.3 dB
reference error = -0.009229 ppm, target error = -0.022132 ppm
Measured dist: 16.713295 target fitness: 1.295702 stddevs: 1.345071 target, 0.010322 reference
gold result: 17.802583
| correlation 3921 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_brmlab |
|---|
| gain | [7, 7, 7, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 28.338 stddev = 0.007 reference, 1.062 target [samples]; known correct: 29.106 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brmlab (pass 1)
reference error = -0.409695 ppm, target error = -0.015538 ppm
Measured dist: 26.555660 target fitness: 1.317626 stddevs: 4.279013 target, 0.112154 reference
gold result: 29.106471
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brmlab (pass 2)
snr: 37.6 39.9 dB
reference error = 0.020289 ppm, target error = -0.068606 ppm
Measured dist: 28.337641 target fitness: 1.317861 stddevs: 1.061627 target, 0.007045 reference
gold result: 29.106471
| correlation 3922 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -36.385 stddev = 0.004 reference, 1.543 target [samples]; known correct: -37.247 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = -0.109846 ppm, target error = -0.054666 ppm
Measured dist: -36.814365 target fitness: 1.320137 stddevs: 2.022066 target, 0.029987 reference
gold result: -37.247119
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 37.5 44.9 dB
reference error = 0.001968 ppm, target error = -0.141333 ppm
Measured dist: -36.384794 target fitness: 1.318388 stddevs: 1.542787 target, 0.004130 reference
gold result: -37.247119
| correlation 3923 | 2019-04-20T20-35-49_90300000_luna | 2019-04-20T20-35-49_90300000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 11.590 stddev = 0.016 reference, 0.737 target [samples]; known correct: 11.304 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
 |
Correlator log
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brmlab (pass 1)
reference error = -0.688082 ppm, target error = 0.047948 ppm
Measured dist: 11.144884 target fitness: 1.294495 stddevs: 7.091049 target, 0.187831 reference
gold result: 11.303888
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brmlab (pass 2)
snr: 30.3 39.3 dB
reference error = 0.038105 ppm, target error = -0.032672 ppm
Measured dist: 11.589917 target fitness: 1.290305 stddevs: 0.737199 target, 0.016467 reference
gold result: 11.303888
| correlation 3924 | 2019-04-20T20-35-49_90300000_luna | 2019-04-20T20-35-49_90300000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -53.331 stddev = 0.012 reference, 1.774 target [samples]; known correct: -55.050 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = -0.347630 ppm, target error = 0.102908 ppm
Measured dist: -56.187833 target fitness: 1.345645 stddevs: 4.503232 target, 0.096275 reference
gold result: -55.049702
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 30.3 44.8 dB
reference error = -0.025557 ppm, target error = -0.129146 ppm
Measured dist: -53.330641 target fitness: 1.344987 stddevs: 1.774425 target, 0.011685 reference
gold result: -55.049702
| correlation 3925 | 2019-04-20T20-35-49_90300000_brmlab | 2019-04-20T20-35-49_90300000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -64.768 stddev = 0.005 reference, 1.266 target [samples]; known correct: -66.354 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-35-49_90300000_brmlab <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = 0.293922 ppm, target error = -0.033969 ppm
Measured dist: -64.401743 target fitness: 1.388829 stddevs: 3.257331 target, 0.080124 reference
gold result: -66.353590
2019-04-20T20-35-49_90300000_brmlab <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 39.5 44.8 dB
reference error = -0.009567 ppm, target error = -0.152725 ppm
Measured dist: -64.767993 target fitness: 1.389308 stddevs: 1.266090 target, 0.004801 reference
gold result: -66.353590
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
