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 4400 | 2019-04-21T00-16-10_90700000_pankrac | 2019-04-21T00-16-10_90700000_luna |
|---|
| gain | [7, 7, 7, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 16.021 stddev = 0.007 reference, 0.687 target [samples]; known correct: 17.803 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-21T00-16-10_90700000_pankrac <--> 2019-04-21T00-16-10_90700000_luna (pass 1)
reference error = 0.297151 ppm, target error = 0.156156 ppm
Measured dist: 15.872335 target fitness: 2.396209 stddevs: 1.252283 target, 0.081562 reference
gold result: 17.802583
2019-04-21T00-16-10_90700000_pankrac <--> 2019-04-21T00-16-10_90700000_luna (pass 2)
snr: 41.7 38.1 dB
reference error = -0.016247 ppm, target error = -0.021041 ppm
Measured dist: 16.020790 target fitness: 2.390199 stddevs: 0.686516 target, 0.006578 reference
gold result: 17.802583
| correlation 4401 | 2019-04-21T00-16-10_90700000_pankrac | 2019-04-21T00-16-10_90700000_brmlab |
|---|
| gain | [7, 7, 7, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 27.511 stddev = 0.005 reference, 0.513 target [samples]; known correct: 29.106 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-16-10_90700000_pankrac <--> 2019-04-21T00-16-10_90700000_brmlab (pass 1)
reference error = 0.533440 ppm, target error = 0.152422 ppm
Measured dist: 27.586508 target fitness: 2.389612 stddevs: 1.977986 target, 0.143763 reference
gold result: 29.106471
2019-04-21T00-16-10_90700000_pankrac <--> 2019-04-21T00-16-10_90700000_brmlab (pass 2)
snr: 41.7 36.7 dB
reference error = -0.009510 ppm, target error = -0.000125 ppm
Measured dist: 27.511176 target fitness: 2.389515 stddevs: 0.512876 target, 0.005171 reference
gold result: 29.106471
| correlation 4402 | 2019-04-21T00-16-10_90700000_pankrac | 2019-04-21T00-16-10_90700000_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 | 90700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -37.309 stddev = 0.004 reference, 0.756 target [samples]; known correct: -37.247 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-16-10_90700000_pankrac <--> 2019-04-21T00-16-10_90700000_brevnov (pass 1)
reference error = -0.010780 ppm, target error = -0.009782 ppm
Measured dist: -37.308627 target fitness: 2.285092 stddevs: 0.753954 target, 0.004960 reference
gold result: -37.247119
2019-04-21T00-16-10_90700000_pankrac <--> 2019-04-21T00-16-10_90700000_brevnov (pass 2)
snr: 41.7 50.3 dB
reference error = 0.000323 ppm, target error = 0.001785 ppm
Measured dist: -37.309166 target fitness: 2.285744 stddevs: 0.756409 target, 0.003676 reference
gold result: -37.247119
| correlation 4403 | 2019-04-21T00-16-10_90700000_luna | 2019-04-21T00-16-10_90700000_brmlab |
|---|
| gain | [10, 10, 10, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 11.464 stddev = 0.014 reference, 0.431 target [samples]; known correct: 11.304 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-16-10_90700000_luna <--> 2019-04-21T00-16-10_90700000_brmlab (pass 1)
reference error = 0.193720 ppm, target error = 0.133093 ppm
Measured dist: 11.259364 target fitness: 2.381431 stddevs: 0.963111 target, 0.053311 reference
gold result: 11.303888
2019-04-21T00-16-10_90700000_luna <--> 2019-04-21T00-16-10_90700000_brmlab (pass 2)
snr: 38.1 36.7 dB
reference error = 0.048427 ppm, target error = 0.055698 ppm
Measured dist: 11.464268 target fitness: 2.380914 stddevs: 0.430872 target, 0.014175 reference
gold result: 11.303888
| correlation 4404 | 2019-04-21T00-16-10_90700000_luna | 2019-04-21T00-16-10_90700000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -53.524 stddev = 0.007 reference, 0.872 target [samples]; known correct: -55.050 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-21T00-16-10_90700000_luna <--> 2019-04-21T00-16-10_90700000_brevnov (pass 1)
reference error = -0.309586 ppm, target error = -0.111846 ppm
Measured dist: -53.482012 target fitness: 2.341977 stddevs: 1.416183 target, 0.085052 reference
gold result: -55.049702
2019-04-21T00-16-10_90700000_luna <--> 2019-04-21T00-16-10_90700000_brevnov (pass 2)
snr: 38.1 50.2 dB
reference error = 0.018832 ppm, target error = 0.040490 ppm
Measured dist: -53.524240 target fitness: 2.339908 stddevs: 0.872152 target, 0.007100 reference
gold result: -55.049702
| correlation 4405 | 2019-04-21T00-16-10_90700000_brmlab | 2019-04-21T00-16-10_90700000_brevnov |
|---|
| gain | [6, 6, 6, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -64.845 stddev = 0.005 reference, 0.657 target [samples]; known correct: -66.354 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-16-10_90700000_brmlab <--> 2019-04-21T00-16-10_90700000_brevnov (pass 1)
reference error = -0.541951 ppm, target error = -0.107971 ppm
Measured dist: -64.615717 target fitness: 2.400126 stddevs: 2.086713 target, 0.146466 reference
gold result: -66.353590
2019-04-21T00-16-10_90700000_brmlab <--> 2019-04-21T00-16-10_90700000_brevnov (pass 2)
snr: 36.7 50.2 dB
reference error = 0.009144 ppm, target error = 0.011031 ppm
Measured dist: -64.845222 target fitness: 2.427575 stddevs: 0.657423 target, 0.004910 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
