TDOA measurements at 91200 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 3932 | 2019-04-20T20-43-12_91900000_pankrac | 2019-04-20T20-43-12_91900000_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 | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 9.225 stddev = 0.014 reference, 0.781 target [samples]; known correct: 12.168 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_luna (pass 1)
reference error = 0.276862 ppm, target error = -0.109068 ppm
Measured dist: 9.875876 target fitness: 1.354678 stddevs: 2.209915 target, 0.074292 reference
gold result: 12.168451
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_luna (pass 2)
snr: 47.7 35.2 dB
reference error = 0.023087 ppm, target error = 0.041401 ppm
Measured dist: 9.225258 target fitness: 1.352665 stddevs: 0.780610 target, 0.013561 reference
gold result: 12.168451
| correlation 3933 | 2019-04-20T20-43-12_91900000_pankrac | 2019-04-20T20-43-12_91900000_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 | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 24.452 stddev = 0.004 reference, 1.963 target [samples]; known correct: 24.029 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brmlab (pass 1)
reference error = 0.528357 ppm, target error = -0.051769 ppm
Measured dist: 25.418330 target fitness: 1.332522 stddevs: 4.782429 target, 0.144732 reference
gold result: 24.028855
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brmlab (pass 2)
snr: 47.7 35.2 dB
reference error = 0.001418 ppm, target error = -0.013443 ppm
Measured dist: 24.451918 target fitness: 1.338226 stddevs: 1.963380 target, 0.004473 reference
gold result: 24.028855
| correlation 3934 | 2019-04-20T20-43-12_91900000_pankrac | 2019-04-20T20-43-12_91900000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -26.960 stddev = 0.004 reference, 0.905 target [samples]; known correct: -34.387 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brevnov (pass 1)
reference error = -0.082645 ppm, target error = -0.320093 ppm
Measured dist: -26.443862 target fitness: 1.334405 stddevs: 1.272270 target, 0.022813 reference
gold result: -34.387361
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 47.7 49.9 dB
reference error = 0.001604 ppm, target error = -0.012150 ppm
Measured dist: -26.960112 target fitness: 1.334981 stddevs: 0.904919 target, 0.003870 reference
gold result: -34.387361
| correlation 3935 | 2019-04-20T20-43-12_91900000_luna | 2019-04-20T20-43-12_91900000_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 | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 15.195 stddev = 0.013 reference, 1.784 target [samples]; known correct: 11.860 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brmlab (pass 1)
reference error = 0.230024 ppm, target error = -0.165515 ppm
Measured dist: 16.403126 target fitness: 1.357468 stddevs: 2.709752 target, 0.062284 reference
gold result: 11.860404
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brmlab (pass 2)
snr: 35.2 35.8 dB
reference error = -0.007506 ppm, target error = 0.085464 ppm
Measured dist: 15.195262 target fitness: 1.356783 stddevs: 1.783870 target, 0.013491 reference
gold result: 11.860404
| correlation 3936 | 2019-04-20T20-43-12_91900000_luna | 2019-04-20T20-43-12_91900000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -35.519 stddev = 0.012 reference, 1.188 target [samples]; known correct: -46.556 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brevnov (pass 1)
reference error = -0.370919 ppm, target error = -0.043102 ppm
Measured dist: -36.193965 target fitness: 1.366333 stddevs: 3.356117 target, 0.098730 reference
gold result: -46.555812
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 35.2 49.9 dB
reference error = -0.005762 ppm, target error = -0.066190 ppm
Measured dist: -35.518903 target fitness: 1.359451 stddevs: 1.188006 target, 0.011762 reference
gold result: -46.555812
| correlation 3937 | 2019-04-20T20-43-12_91900000_brmlab | 2019-04-20T20-43-12_91900000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -50.477 stddev = 0.005 reference, 1.204 target [samples]; known correct: -58.416 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_brmlab <--> 2019-04-20T20-43-12_91900000_brevnov (pass 1)
reference error = -0.620601 ppm, target error = 0.030063 ppm
Measured dist: -51.560566 target fitness: 1.367215 stddevs: 5.547362 target, 0.170797 reference
gold result: -58.416216
2019-04-20T20-43-12_91900000_brmlab <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 35.6 49.9 dB
reference error = 0.013523 ppm, target error = -0.025764 ppm
Measured dist: -50.476631 target fitness: 1.391383 stddevs: 1.204176 target, 0.005351 reference
gold result: -58.416216
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
