TDOA measurements at 105900 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 4118 | 2019-04-20T21-48-29_105000000_pankrac | 2019-04-20T21-48-29_105000000_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 | 105000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -38.118 stddev = 0.007 reference, 6.366 target [samples]; known correct: -41.645 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-48-29_105000000_pankrac <--> 2019-04-20T21-48-29_105000000_luna (pass 1)
reference error = 0.309214 ppm, target error = 0.010574 ppm
Measured dist: -36.590938 target fitness: 2.189947 stddevs: 6.840663 target, 0.085099 reference
gold result: -41.645325
2019-04-20T21-48-29_105000000_pankrac <--> 2019-04-20T21-48-29_105000000_luna (pass 2)
snr: 31.4 27.2 dB
reference error = -0.012213 ppm, target error = 0.081654 ppm
Measured dist: -38.117884 target fitness: 2.202717 stddevs: 6.365700 target, 0.007409 reference
gold result: -41.645325
| correlation 4119 | 2019-04-20T21-48-29_105000000_pankrac | 2019-04-20T21-48-29_105000000_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 | 105000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -10.084 stddev = 0.010 reference, 7.674 target [samples]; known correct: -2.870 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-48-29_105000000_pankrac <--> 2019-04-20T21-48-29_105000000_brmlab (pass 1)
reference error = 0.490801 ppm, target error = 0.018904 ppm
Measured dist: -9.019612 target fitness: 2.385876 stddevs: 8.506137 target, 0.135458 reference
gold result: -2.869775
2019-04-20T21-48-29_105000000_pankrac <--> 2019-04-20T21-48-29_105000000_brmlab (pass 2)
snr: 31.4 28.3 dB
reference error = 0.034489 ppm, target error = -0.099727 ppm
Measured dist: -10.083824 target fitness: 2.410285 stddevs: 7.674435 target, 0.010343 reference
gold result: -2.869775
| correlation 4120 | 2019-04-20T21-48-29_105000000_pankrac | 2019-04-20T21-48-29_105000000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 105000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -35.062 stddev = 0.004 reference, 1.773 target [samples]; known correct: -42.720 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-48-29_105000000_pankrac <--> 2019-04-20T21-48-29_105000000_brevnov (pass 1)
reference error = -0.002198 ppm, target error = 0.062211 ppm
Measured dist: -35.053273 target fitness: 2.288734 stddevs: 1.778759 target, 0.004170 reference
gold result: -42.719992
2019-04-20T21-48-29_105000000_pankrac <--> 2019-04-20T21-48-29_105000000_brevnov (pass 2)
snr: 31.4 59.8 dB
reference error = -0.000162 ppm, target error = 0.070239 ppm
Measured dist: -35.062072 target fitness: 2.290842 stddevs: 1.773447 target, 0.003882 reference
gold result: -42.719992
| correlation 4121 | 2019-04-20T21-48-29_105000000_luna | 2019-04-20T21-48-29_105000000_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 | 105000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 30.089 stddev = 0.008 reference, 9.793 target [samples]; known correct: 38.776 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-48-29_105000000_luna <--> 2019-04-20T21-48-29_105000000_brmlab (pass 1)
reference error = 0.222550 ppm, target error = -0.050395 ppm
Measured dist: 37.588034 target fitness: 2.321446 stddevs: 10.074394 target, 0.061792 reference
gold result: 38.775550
2019-04-20T21-48-29_105000000_luna <--> 2019-04-20T21-48-29_105000000_brmlab (pass 2)
snr: 27.1 27.2 dB
reference error = -0.006439 ppm, target error = 0.083833 ppm
Measured dist: 30.089224 target fitness: 2.293884 stddevs: 9.793025 target, 0.007962 reference
gold result: 38.775550
| correlation 4122 | 2019-04-20T21-48-29_105000000_luna | 2019-04-20T21-48-29_105000000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 105000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 6.068 stddev = 0.008 reference, 3.641 target [samples]; known correct: -1.075 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-48-29_105000000_luna <--> 2019-04-20T21-48-29_105000000_brevnov (pass 1)
reference error = -0.308592 ppm, target error = 0.033630 ppm
Measured dist: 3.547996 target fitness: 2.111223 stddevs: 4.234902 target, 0.085258 reference
gold result: -1.074668
2019-04-20T21-48-29_105000000_luna <--> 2019-04-20T21-48-29_105000000_brevnov (pass 2)
snr: 27.2 59.8 dB
reference error = 0.014081 ppm, target error = -0.026173 ppm
Measured dist: 6.068422 target fitness: 2.115352 stddevs: 3.641327 target, 0.008284 reference
gold result: -1.074668
| correlation 4123 | 2019-04-20T21-48-29_105000000_brmlab | 2019-04-20T21-48-29_105000000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 105000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -28.945 stddev = 0.010 reference, 1.399 target [samples]; known correct: -39.850 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-48-29_105000000_brmlab <--> 2019-04-20T21-48-29_105000000_brevnov (pass 1)
reference error = -0.493607 ppm, target error = -0.031488 ppm
Measured dist: -28.058668 target fitness: 2.237983 stddevs: 3.872688 target, 0.134645 reference
gold result: -39.850218
2019-04-20T21-48-29_105000000_brmlab <--> 2019-04-20T21-48-29_105000000_brevnov (pass 2)
snr: 28.3 59.8 dB
reference error = -0.033363 ppm, target error = -0.071831 ppm
Measured dist: -28.944876 target fitness: 2.253973 stddevs: 1.398898 target, 0.009893 reference
gold result: -39.850218
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
