TDOA measurements at 97200 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 4190 | 2019-04-20T22-19-43_98100000_pankrac | 2019-04-20T22-19-43_98100000_luna |
|---|
| gain | [6, 6, 6, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -72.996 stddev = 0.010 reference, 0.729 target [samples]; known correct: -71.538 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_luna (pass 1)
reference error = 0.270398 ppm, target error = 0.008101 ppm
Measured dist: -74.185670 target fitness: 1.789971 stddevs: 2.844724 target, 0.073235 reference
gold result: -71.538394
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_luna (pass 2)
snr: 27.8 39.5 dB
reference error = -0.007608 ppm, target error = -0.015214 ppm
Measured dist: -72.995574 target fitness: 1.786273 stddevs: 0.729272 target, 0.010308 reference
gold result: -71.538394
| correlation 4191 | 2019-04-20T22-19-43_98100000_pankrac | 2019-04-20T22-19-43_98100000_brmlab |
|---|
| 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 | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -16.547 stddev = 0.005 reference, 0.730 target [samples]; known correct: -16.483 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brmlab (pass 1)
reference error = 0.524280 ppm, target error = 0.090873 ppm
Measured dist: -9.459097 target fitness: 1.580143 stddevs: 5.357168 target, 0.144164 reference
gold result: -16.482538
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brmlab (pass 2)
snr: 27.8 46.7 dB
reference error = -0.003270 ppm, target error = 0.186482 ppm
Measured dist: -16.547084 target fitness: 1.577419 stddevs: 0.730157 target, 0.004659 reference
gold result: -16.482538
| correlation 4192 | 2019-04-20T22-19-43_98100000_pankrac | 2019-04-20T22-19-43_98100000_brevnov |
|---|
| gain | [6, 6, 6, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -27.122 stddev = 0.004 reference, 0.745 target [samples]; known correct: -28.778 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brevnov (pass 1)
reference error = -0.012509 ppm, target error = -0.000337 ppm
Measured dist: -27.137840 target fitness: 1.601341 stddevs: 0.766351 target, 0.005683 reference
gold result: -28.778373
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 27.8 57.0 dB
reference error = 0.001570 ppm, target error = 0.014932 ppm
Measured dist: -27.121846 target fitness: 1.600157 stddevs: 0.745243 target, 0.004310 reference
gold result: -28.778373
| correlation 4193 | 2019-04-20T22-19-43_98100000_luna | 2019-04-20T22-19-43_98100000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 57.014 stddev = 0.011 reference, 0.708 target [samples]; known correct: 55.056 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brmlab (pass 1)
reference error = 0.261184 ppm, target error = 0.091088 ppm
Measured dist: 54.874463 target fitness: 1.657732 stddevs: 2.554655 target, 0.071493 reference
gold result: 55.055856
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brmlab (pass 2)
snr: 39.5 46.7 dB
reference error = -0.001263 ppm, target error = -0.022457 ppm
Measured dist: 57.013508 target fitness: 1.670095 stddevs: 0.707578 target, 0.011270 reference
gold result: 55.055856
| correlation 4194 | 2019-04-20T22-19-43_98100000_luna | 2019-04-20T22-19-43_98100000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 46.120 stddev = 0.009 reference, 0.786 target [samples]; known correct: 42.760 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brevnov (pass 1)
reference error = -0.283950 ppm, target error = 0.040553 ppm
Measured dist: 43.656256 target fitness: 1.626535 stddevs: 3.125946 target, 0.076937 reference
gold result: 42.760020
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 39.5 57.0 dB
reference error = 0.006861 ppm, target error = -0.030509 ppm
Measured dist: 46.120188 target fitness: 1.615391 stddevs: 0.785848 target, 0.009201 reference
gold result: 42.760020
| correlation 4195 | 2019-04-20T22-19-43_98100000_brmlab | 2019-04-20T22-19-43_98100000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -10.401 stddev = 0.010 reference, 0.718 target [samples]; known correct: -12.296 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-19-43_98100000_brmlab <--> 2019-04-20T22-19-43_98100000_brevnov (pass 1)
reference error = -0.500211 ppm, target error = -0.096794 ppm
Measured dist: -17.179828 target fitness: 1.558000 stddevs: 5.608437 target, 0.138398 reference
gold result: -12.295835
2019-04-20T22-19-43_98100000_brmlab <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 46.8 57.0 dB
reference error = -0.032231 ppm, target error = -0.192636 ppm
Measured dist: -10.400522 target fitness: 1.563631 stddevs: 0.717836 target, 0.009881 reference
gold result: -12.295835
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
