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 4154 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_brmlab |
|---|
| 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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 24.570 stddev = 0.005 reference, 3.967 target [samples]; known correct: 24.029 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brmlab (pass 1)
reference error = 0.494329 ppm, target error = 0.026436 ppm
Measured dist: 24.546245 target fitness: 1.092082 stddevs: 48.015812 target, 0.136242 reference
gold result: 24.028855
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brmlab (pass 2)
snr: 42.6 34.7 dB
reference error = -0.010300 ppm, target error = -0.049801 ppm
Measured dist: 24.570068 target fitness: 1.090617 stddevs: 3.966722 target, 0.004919 reference
gold result: 24.028855
| correlation 4155 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -27.404 stddev = 0.004 reference, 7.885 target [samples]; known correct: -34.387 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brevnov (pass 1)
reference error = -0.064207 ppm, target error = -0.002454 ppm
Measured dist: -27.414519 target fitness: 1.083847 stddevs: 17.267721 target, 0.017912 reference
gold result: -34.387361
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brevnov (pass 2)
snr: 42.6 42.6 dB
reference error = 0.002758 ppm, target error = 0.117745 ppm
Measured dist: -27.404281 target fitness: 1.083775 stddevs: 7.884564 target, 0.004139 reference
gold result: -34.387361
| correlation 4156 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 9.567 stddev = 0.008 reference, 6.965 target [samples]; known correct: 12.168 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = 0.239939 ppm, target error = 0.115707 ppm
Measured dist: 9.817797 target fitness: 1.109299 stddevs: 56.354946 target, 0.064607 reference
gold result: 12.168451
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 42.6 29.9 dB
reference error = -0.003852 ppm, target error = -0.173216 ppm
Measured dist: 9.566693 target fitness: 1.107922 stddevs: 6.964899 target, 0.008031 reference
gold result: 12.168451
| correlation 4157 | 2019-04-20T22-03-17_91200000_brmlab | 2019-04-20T22-03-17_91200000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -50.241 stddev = 0.004 reference, 7.075 target [samples]; known correct: -58.416 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_brevnov (pass 1)
reference error = -0.515278 ppm, target error = -0.093427 ppm
Measured dist: -50.796500 target fitness: 1.089132 stddevs: 43.028282 target, 0.140989 reference
gold result: -58.416216
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_brevnov (pass 2)
snr: 34.7 42.6 dB
reference error = -0.009816 ppm, target error = 0.110352 ppm
Measured dist: -50.241222 target fitness: 1.086850 stddevs: 7.074673 target, 0.003988 reference
gold result: -58.416216
| correlation 4158 | 2019-04-20T22-03-17_91200000_brmlab | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [4, 4, 4, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -15.282 stddev = 0.009 reference, 3.977 target [samples]; known correct: -11.860 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = -0.250205 ppm, target error = 0.122381 ppm
Measured dist: -14.937660 target fitness: 1.106573 stddevs: 37.343166 target, 0.068289 reference
gold result: -11.860404
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 34.7 29.9 dB
reference error = 0.003478 ppm, target error = -0.008316 ppm
Measured dist: -15.281759 target fitness: 1.106266 stddevs: 3.977345 target, 0.008844 reference
gold result: -11.860404
| correlation 4159 | 2019-04-20T22-03-17_91200000_brevnov | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [4, 4, 4, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 36.871 stddev = 0.008 reference, 7.139 target [samples]; known correct: 46.556 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-03-17_91200000_brevnov <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = 0.311311 ppm, target error = 0.132935 ppm
Measured dist: 37.231918 target fitness: 1.097401 stddevs: 41.090034 target, 0.083553 reference
gold result: 46.555812
2019-04-20T22-03-17_91200000_brevnov <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 42.6 29.9 dB
reference error = -0.009447 ppm, target error = -0.144940 ppm
Measured dist: 36.870535 target fitness: 1.096273 stddevs: 7.139438 target, 0.008080 reference
gold result: 46.555812
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
