TDOA measurements at 89500 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 3908 | 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 | -90.220 stddev = 0.010 reference, 38.071 target [samples]; known correct: -5.425 |
| 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 = 0.264650 ppm
Measured dist: -89.941413 target fitness: 1.195631 stddevs: 38.973652 target, 0.076385 reference
gold result: -5.425448
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_luna (pass 2)
snr: 26.2 30.9 dB
reference error = -0.009229 ppm, target error = 0.050672 ppm
Measured dist: -90.220463 target fitness: 1.194532 stddevs: 38.071152 target, 0.010322 reference
gold result: -5.425448
| correlation 3909 | 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 | -90.959 stddev = 0.007 reference, 24.465 target [samples]; known correct: -14.660 |
| 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_brmlab (pass 1)
reference error = -0.409695 ppm, target error = -0.020182 ppm
Measured dist: -91.434622 target fitness: 1.117023 stddevs: 33.486519 target, 0.112154 reference
gold result: -14.659684
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brmlab (pass 2)
snr: 26.2 51.1 dB
reference error = 0.020289 ppm, target error = 0.264842 ppm
Measured dist: -90.958767 target fitness: 1.113489 stddevs: 24.465309 target, 0.007045 reference
gold result: -14.659684
| correlation 3910 | 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 | 13.332 stddev = 0.004 reference, 41.887 target [samples]; known correct: 8.212 |
| 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 = -0.174944 ppm
Measured dist: 12.942540 target fitness: 1.141279 stddevs: 42.070072 target, 0.029987 reference
gold result: 8.211560
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 26.2 46.8 dB
reference error = 0.002014 ppm, target error = 0.033832 ppm
Measured dist: 13.331715 target fitness: 1.139424 stddevs: 41.886616 target, 0.004161 reference
gold result: 8.211560
| correlation 3911 | 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 | 3.600 stddev = 0.016 reference, 1.182 target [samples]; known correct: -9.234 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
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 = -0.184953 ppm
Measured dist: 2.921607 target fitness: 1.168080 stddevs: 32.547951 target, 0.187831 reference
gold result: -9.234236
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brmlab (pass 2)
snr: 30.9 51.1 dB
reference error = 0.038105 ppm, target error = 0.065397 ppm
Measured dist: 3.599694 target fitness: 1.160411 stddevs: 1.182296 target, 0.016467 reference
gold result: -9.234236
| correlation 3912 | 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 | 20.362 stddev = 0.012 reference, 0.841 target [samples]; known correct: 13.637 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
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 = -0.102911 ppm
Measured dist: 19.787975 target fitness: 1.192649 stddevs: 12.347704 target, 0.096275 reference
gold result: 13.637007
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 30.9 46.8 dB
reference error = -0.025557 ppm, target error = -0.135608 ppm
Measured dist: 20.362381 target fitness: 1.190070 stddevs: 0.841191 target, 0.011685 reference
gold result: 13.637007
| correlation 3913 | 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 | 16.922 stddev = 0.005 reference, 0.609 target [samples]; known correct: 22.871 |
| 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 = -0.132905 ppm
Measured dist: 17.340728 target fitness: 1.132307 stddevs: 16.607470 target, 0.080124 reference
gold result: 22.871244
2019-04-20T20-35-49_90300000_brmlab <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 50.9 46.8 dB
reference error = -0.009567 ppm, target error = -0.050736 ppm
Measured dist: 16.921550 target fitness: 1.130209 stddevs: 0.608775 target, 0.004801 reference
gold result: 22.871244
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
