TDOA measurements at 94100 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 3992 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_luna |
|---|
| gain | [8, 8, 8, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 26.205 stddev = 0.016 reference, 1.564 target [samples]; known correct: 28.624 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_luna (pass 1)
reference error = 0.254754 ppm, target error = 0.111813 ppm
Measured dist: 27.016141 target fitness: 1.453969 stddevs: 3.294836 target, 0.069949 reference
gold result: 28.624249
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_luna (pass 2)
snr: 23.0 13.2 dB
reference error = 0.040613 ppm, target error = 0.016116 ppm
Measured dist: 26.204511 target fitness: 1.462049 stddevs: 1.563696 target, 0.016220 reference
gold result: 28.624249
| correlation 3993 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 17.487 stddev = 0.006 reference, 4.328 target [samples]; known correct: 18.948 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brmlab (pass 1)
reference error = -0.384269 ppm, target error = 0.000196 ppm
Measured dist: 18.305227 target fitness: 1.438573 stddevs: 6.194263 target, 0.104508 reference
gold result: 18.947899
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brmlab (pass 2)
snr: 23.0 22.2 dB
reference error = 0.014576 ppm, target error = 0.044315 ppm
Measured dist: 17.487084 target fitness: 1.434826 stddevs: 4.328462 target, 0.005669 reference
gold result: 18.947899
| correlation 3994 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 21.594 stddev = 0.004 reference, 1.442 target [samples]; known correct: 27.214 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = -0.094468 ppm, target error = -0.067749 ppm
Measured dist: 22.205577 target fitness: 1.481693 stddevs: 1.772709 target, 0.026387 reference
gold result: 27.214473
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 23.0 26.3 dB
reference error = 0.005621 ppm, target error = 0.034430 ppm
Measured dist: 21.593663 target fitness: 1.479872 stddevs: 1.441715 target, 0.004405 reference
gold result: 27.214473
| correlation 3995 | 2019-04-20T21-03-18_94600000_luna | 2019-04-20T21-03-18_94600000_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 | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -8.421 stddev = 0.017 reference, 1.286 target [samples]; known correct: -9.676 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brmlab (pass 1)
reference error = -0.702450 ppm, target error = 0.043025 ppm
Measured dist: -7.705484 target fitness: 1.447775 stddevs: 6.825212 target, 0.188378 reference
gold result: -9.676350
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brmlab (pass 2)
snr: 13.2 22.1 dB
reference error = 0.041790 ppm, target error = 0.017820 ppm
Measured dist: -8.420898 target fitness: 1.458953 stddevs: 1.285581 target, 0.017424 reference
gold result: -9.676350
| correlation 3996 | 2019-04-20T21-03-18_94600000_luna | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -4.937 stddev = 0.013 reference, 0.958 target [samples]; known correct: -1.410 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = -0.397918 ppm, target error = -0.038615 ppm
Measured dist: -4.639398 target fitness: 1.474567 stddevs: 3.537980 target, 0.110107 reference
gold result: -1.409776
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 13.2 26.2 dB
reference error = 0.019760 ppm, target error = 0.050637 ppm
Measured dist: -4.937222 target fitness: 1.479317 stddevs: 0.957808 target, 0.012584 reference
gold result: -1.409776
| correlation 3997 | 2019-04-20T21-03-18_94600000_brmlab | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 3.735 stddev = 0.007 reference, 0.952 target [samples]; known correct: 8.267 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-03-18_94600000_brmlab <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = 0.258172 ppm, target error = 0.103802 ppm
Measured dist: 3.995703 target fitness: 1.475075 stddevs: 2.743991 target, 0.071031 reference
gold result: 8.266574
2019-04-20T21-03-18_94600000_brmlab <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 22.2 26.2 dB
reference error = 0.022634 ppm, target error = 0.049541 ppm
Measured dist: 3.734857 target fitness: 1.477468 stddevs: 0.952357 target, 0.007428 reference
gold result: 8.266574
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
