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 3896 | 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 | -86.549 stddev = 0.013 reference, 37.429 target [samples]; known correct: -5.425 |
| 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 = -0.107325 ppm
Measured dist: -85.912824 target fitness: 1.165758 stddevs: 38.349125 target, 0.085694 reference
gold result: -5.425448
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_luna (pass 2)
snr: 10.8 32.0 dB
reference error = 0.009828 ppm, target error = -0.101162 ppm
Measured dist: -86.549282 target fitness: 1.166966 stddevs: 37.429356 target, 0.012507 reference
gold result: -5.425448
| correlation 3897 | 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 | -65.756 stddev = 0.008 reference, 33.841 target [samples]; known correct: -14.660 |
| 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 = -0.205327 ppm
Measured dist: -72.920702 target fitness: 1.097189 stddevs: 41.216640 target, 0.140529 reference
gold result: -14.659684
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brmlab (pass 2)
snr: 10.8 51.1 dB
reference error = 0.025028 ppm, target error = -0.088327 ppm
Measured dist: -65.755890 target fitness: 1.096170 stddevs: 33.841095 target, 0.008055 reference
gold result: -14.659684
| correlation 3898 | 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 | -54.023 stddev = 0.004 reference, 41.298 target [samples]; known correct: 8.212 |
| 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 = 0.182029 ppm
Measured dist: -50.574900 target fitness: 1.113965 stddevs: 41.372715 target, 0.020421 reference
gold result: 8.211560
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 10.8 46.8 dB
reference error = -0.000373 ppm, target error = -0.199121 ppm
Measured dist: -54.023423 target fitness: 1.113725 stddevs: 41.297955 target, 0.003943 reference
gold result: 8.211560
| correlation 3899 | 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 | 3.902 stddev = 0.007 reference, 3.632 target [samples]; known correct: -9.234 |
| 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 = 0.271423 ppm
Measured dist: 3.598506 target fitness: 1.156574 stddevs: 22.209391 target, 0.058455 reference
gold result: -9.234236
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brmlab (pass 2)
snr: 32.0 52.0 dB
reference error = -0.000106 ppm, target error = -0.009747 ppm
Measured dist: 3.901669 target fitness: 1.154933 stddevs: 3.632003 target, 0.006569 reference
gold result: -9.234236
| correlation 3900 | 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 | 20.438 stddev = 0.011 reference, 0.757 target [samples]; known correct: 13.637 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
 |
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 = -0.296938 ppm
Measured dist: 20.194078 target fitness: 1.183330 stddevs: 18.377752 target, 0.110026 reference
gold result: 13.637007
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 32.0 46.8 dB
reference error = 0.013336 ppm, target error = -0.227062 ppm
Measured dist: 20.437834 target fitness: 1.181601 stddevs: 0.756633 target, 0.011024 reference
gold result: 13.637007
| correlation 3901 | 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 | 16.982 stddev = 0.008 reference, 0.472 target [samples]; known correct: 22.871 |
| 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 = -0.402322 ppm
Measured dist: 16.531754 target fitness: 1.128130 stddevs: 28.881224 target, 0.157843 reference
gold result: 22.871244
2019-04-20T20-30-01_89500000_brmlab <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 51.3 46.8 dB
reference error = -0.026730 ppm, target error = -0.033274 ppm
Measured dist: 16.982243 target fitness: 1.125269 stddevs: 0.471543 target, 0.008304 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
