TDOA measurements at 96200 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 4016 | 2019-04-20T21-11-27_96600000_pankrac | 2019-04-20T21-11-27_96600000_luna |
|---|
| gain | [8, 8, 8, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -43.033 stddev = 0.008 reference, 1.630 target [samples]; known correct: -41.645 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_luna (pass 1)
reference error = 0.304755 ppm, target error = 0.120826 ppm
Measured dist: -42.411281 target fitness: 1.810798 stddevs: 2.419530 target, 0.084968 reference
gold result: -41.645325
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_luna (pass 2)
snr: 32.9 34.0 dB
reference error = -0.014203 ppm, target error = -0.093907 ppm
Measured dist: -43.033106 target fitness: 1.823235 stddevs: 1.630127 target, 0.007736 reference
gold result: -41.645325
| correlation 4017 | 2019-04-20T21-11-27_96600000_pankrac | 2019-04-20T21-11-27_96600000_brmlab |
|---|
| 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 | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -2.063 stddev = 0.009 reference, 1.173 target [samples]; known correct: -2.870 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brmlab (pass 1)
reference error = 0.493297 ppm, target error = 0.114895 ppm
Measured dist: -1.867197 target fitness: 1.730643 stddevs: 3.460522 target, 0.135207 reference
gold result: -2.869775
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brmlab (pass 2)
snr: 32.9 43.6 dB
reference error = 0.031893 ppm, target error = -0.065218 ppm
Measured dist: -2.063234 target fitness: 1.736171 stddevs: 1.173428 target, 0.009460 reference
gold result: -2.869775
| correlation 4018 | 2019-04-20T21-11-27_96600000_pankrac | 2019-04-20T21-11-27_96600000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -40.746 stddev = 0.005 reference, 1.308 target [samples]; known correct: -42.720 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brevnov (pass 1)
reference error = -0.091140 ppm, target error = -0.088419 ppm
Measured dist: -40.742204 target fitness: 1.816262 stddevs: 1.479371 target, 0.025379 reference
gold result: -42.719992
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 32.9 55.4 dB
reference error = 0.002856 ppm, target error = -0.095794 ppm
Measured dist: -40.745693 target fitness: 1.813721 stddevs: 1.307876 target, 0.004697 reference
gold result: -42.719992
| correlation 4019 | 2019-04-20T21-11-27_96600000_luna | 2019-04-20T21-11-27_96600000_brmlab |
|---|
| 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 | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 40.237 stddev = 0.008 reference, 0.993 target [samples]; known correct: 38.776 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brmlab (pass 1)
reference error = 0.236071 ppm, target error = -0.059242 ppm
Measured dist: 39.755474 target fitness: 1.791786 stddevs: 1.728028 target, 0.066139 reference
gold result: 38.775550
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brmlab (pass 2)
snr: 34.0 44.2 dB
reference error = -0.007793 ppm, target error = 0.020712 ppm
Measured dist: 40.236889 target fitness: 1.791858 stddevs: 0.993437 target, 0.008081 reference
gold result: 38.775550
| correlation 4020 | 2019-04-20T21-11-27_96600000_luna | 2019-04-20T21-11-27_96600000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 1.452 stddev = 0.008 reference, 0.817 target [samples]; known correct: -1.075 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brevnov (pass 1)
reference error = -0.392316 ppm, target error = -0.070778 ppm
Measured dist: 1.653006 target fitness: 1.747034 stddevs: 2.616047 target, 0.108600 reference
gold result: -1.074668
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 34.0 55.4 dB
reference error = 0.019804 ppm, target error = -0.048034 ppm
Measured dist: 1.451967 target fitness: 1.746642 stddevs: 0.816574 target, 0.008400 reference
gold result: -1.074668
| correlation 4021 | 2019-04-20T21-11-27_96600000_brmlab | 2019-04-20T21-11-27_96600000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -38.682 stddev = 0.008 reference, 0.391 target [samples]; known correct: -39.850 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_brmlab <--> 2019-04-20T21-11-27_96600000_brevnov (pass 1)
reference error = -0.586356 ppm, target error = -0.080123 ppm
Measured dist: -38.036701 target fitness: 1.845571 stddevs: 3.972519 target, 0.159890 reference
gold result: -39.850218
2019-04-20T21-11-27_96600000_brmlab <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 43.8 55.4 dB
reference error = -0.023418 ppm, target error = 0.007491 ppm
Measured dist: -38.681642 target fitness: 1.825401 stddevs: 0.391368 target, 0.007540 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
