TDOA measurements at 102900 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 4412 | 2019-04-21T00-19-48_102900000_pankrac | 2019-04-21T00-19-48_102900000_luna |
|---|
| gain | [8, 8, 8, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 32.941 stddev = 0.006 reference, 0.519 target [samples]; known correct: 34.954 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-21T00-19-48_102900000_pankrac <--> 2019-04-21T00-19-48_102900000_luna (pass 1)
reference error = 0.309841 ppm, target error = 0.097360 ppm
Measured dist: 33.518039 target fitness: 1.642648 stddevs: 1.719307 target, 0.083813 reference
gold result: 34.954401
2019-04-21T00-19-48_102900000_pankrac <--> 2019-04-21T00-19-48_102900000_luna (pass 2)
snr: 34.2 28.6 dB
reference error = -0.013768 ppm, target error = -0.044702 ppm
Measured dist: 32.940763 target fitness: 1.644029 stddevs: 0.519306 target, 0.006248 reference
gold result: 34.954401
| correlation 4413 | 2019-04-21T00-19-48_102900000_pankrac | 2019-04-21T00-19-48_102900000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 38.100 stddev = 0.012 reference, 0.563 target [samples]; known correct: 41.884 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-19-48_102900000_pankrac <--> 2019-04-21T00-19-48_102900000_brmlab (pass 1)
reference error = 0.484281 ppm, target error = 0.079892 ppm
Measured dist: 38.074599 target fitness: 1.685996 stddevs: 3.203961 target, 0.131680 reference
gold result: 41.883851
2019-04-21T00-19-48_102900000_pankrac <--> 2019-04-21T00-19-48_102900000_brmlab (pass 2)
snr: 34.2 33.6 dB
reference error = 0.039719 ppm, target error = 0.044763 ppm
Measured dist: 38.100300 target fitness: 1.659268 stddevs: 0.562910 target, 0.011541 reference
gold result: 41.883851
| correlation 4414 | 2019-04-21T00-19-48_102900000_pankrac | 2019-04-21T00-19-48_102900000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -24.334 stddev = 0.004 reference, 4.011 target [samples]; known correct: -23.634 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-21T00-19-48_102900000_pankrac <--> 2019-04-21T00-19-48_102900000_brevnov (pass 1)
reference error = -0.029608 ppm, target error = -0.056779 ppm
Measured dist: -24.373121 target fitness: 1.402288 stddevs: 4.016354 target, 0.009227 reference
gold result: -23.634450
2019-04-21T00-19-48_102900000_pankrac <--> 2019-04-21T00-19-48_102900000_brevnov (pass 2)
snr: 34.2 27.0 dB
reference error = 0.002263 ppm, target error = -0.052329 ppm
Measured dist: -24.333938 target fitness: 1.403672 stddevs: 4.010575 target, 0.004000 reference
gold result: -23.634450
| correlation 4415 | 2019-04-21T00-19-48_102900000_luna | 2019-04-21T00-19-48_102900000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 5.127 stddev = 0.007 reference, 0.185 target [samples]; known correct: 6.929 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-21T00-19-48_102900000_luna <--> 2019-04-21T00-19-48_102900000_brmlab (pass 1)
reference error = 0.230022 ppm, target error = 0.116720 ppm
Measured dist: 5.453022 target fitness: 1.641230 stddevs: 1.442485 target, 0.062415 reference
gold result: 6.929450
2019-04-21T00-19-48_102900000_luna <--> 2019-04-21T00-19-48_102900000_brmlab (pass 2)
snr: 28.6 33.5 dB
reference error = -0.004875 ppm, target error = -0.002012 ppm
Measured dist: 5.127332 target fitness: 1.641149 stddevs: 0.184572 target, 0.007283 reference
gold result: 6.929450
| correlation 4416 | 2019-04-21T00-19-48_102900000_luna | 2019-04-21T00-19-48_102900000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -58.375 stddev = 0.010 reference, 4.055 target [samples]; known correct: -58.589 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-19-48_102900000_luna <--> 2019-04-21T00-19-48_102900000_brevnov (pass 1)
reference error = -0.294205 ppm, target error = -0.028017 ppm
Measured dist: -58.038701 target fitness: 1.436864 stddevs: 4.611030 target, 0.080529 reference
gold result: -58.588851
2019-04-21T00-19-48_102900000_luna <--> 2019-04-21T00-19-48_102900000_brevnov (pass 2)
snr: 28.6 27.0 dB
reference error = -0.026208 ppm, target error = 0.017241 ppm
Measured dist: -58.374606 target fitness: 1.443811 stddevs: 4.055205 target, 0.009521 reference
gold result: -58.588851
| correlation 4417 | 2019-04-21T00-19-48_102900000_brmlab | 2019-04-21T00-19-48_102900000_brevnov |
|---|
| gain | [5, 5, 5, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -63.438 stddev = 0.005 reference, 4.032 target [samples]; known correct: -65.518 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-21T00-19-48_102900000_brmlab <--> 2019-04-21T00-19-48_102900000_brevnov (pass 1)
reference error = -0.559382 ppm, target error = -0.071727 ppm
Measured dist: -62.645150 target fitness: 1.456183 stddevs: 7.975819 target, 0.152168 reference
gold result: -65.518301
2019-04-21T00-19-48_102900000_brmlab <--> 2019-04-21T00-19-48_102900000_brevnov (pass 2)
snr: 33.8 27.0 dB
reference error = 0.010168 ppm, target error = -0.016241 ppm
Measured dist: -63.437974 target fitness: 1.468726 stddevs: 4.031990 target, 0.004958 reference
gold result: -65.518301
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
