TDOA measurements at 618000 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 3812 | 2019-04-20T19-58-25_618000000_pankrac | 2019-04-20T19-58-25_618000000_luna |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 618000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 21.447 stddev = 0.010 reference, 69.793 target [samples]; known correct: -16.490 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T19-58-25_618000000_pankrac <--> 2019-04-20T19-58-25_618000000_luna (pass 1)
reference error = 0.300418 ppm, target error = 0.116832 ppm
Measured dist: 124.506805 target fitness: 2.678397 stddevs: 71.639030 target, 0.080868 reference
gold result: -16.489633
2019-04-20T19-58-25_618000000_pankrac <--> 2019-04-20T19-58-25_618000000_luna (pass 2)
snr: 3.5 3.5 dB
reference error = -0.007741 ppm, target error = 0.105933 ppm
Measured dist: 21.447314 target fitness: 2.653022 stddevs: 69.792595 target, 0.010007 reference
gold result: -16.489633
| correlation 3813 | 2019-04-20T19-58-25_618000000_pankrac | 2019-04-20T19-58-25_618000000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 618000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 26.751 stddev = 0.005 reference, 70.214 target [samples]; known correct: 27.744 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-58-25_618000000_pankrac <--> 2019-04-20T19-58-25_618000000_brevnov (pass 1)
reference error = -0.074905 ppm, target error = -0.098529 ppm
Measured dist: 27.877492 target fitness: 2.683757 stddevs: 71.260040 target, 0.020943 reference
gold result: 27.744438
2019-04-20T19-58-25_618000000_pankrac <--> 2019-04-20T19-58-25_618000000_brevnov (pass 2)
snr: 3.5 4.0 dB
reference error = -0.014125 ppm, target error = -0.116996 ppm
Measured dist: 26.751346 target fitness: 2.682619 stddevs: 70.213882 target, 0.005240 reference
gold result: 27.744438
| correlation 3814 | 2019-04-20T19-58-25_618000000_pankrac | 2019-04-20T19-58-25_618000000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 618000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 58.326 stddev = 0.009 reference, 71.500 target [samples]; known correct: -1.910 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-58-25_618000000_pankrac <--> 2019-04-20T19-58-25_618000000_brmlab (pass 1)
reference error = -0.358185 ppm, target error = -0.315522 ppm
Measured dist: -33.338354 target fitness: 2.677079 stddevs: 70.246040 target, 0.096810 reference
gold result: -1.909552
2019-04-20T19-58-25_618000000_pankrac <--> 2019-04-20T19-58-25_618000000_brmlab (pass 2)
snr: 3.5 3.4 dB
reference error = -0.030516 ppm, target error = -0.048228 ppm
Measured dist: 58.325928 target fitness: 2.668444 stddevs: 71.500282 target, 0.009192 reference
gold result: -1.909552
| correlation 3815 | 2019-04-20T19-58-25_618000000_luna | 2019-04-20T19-58-25_618000000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 618000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 44.450 stddev = 0.008 reference, 47.029 target [samples]; known correct: 44.234 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-58-25_618000000_luna <--> 2019-04-20T19-58-25_618000000_brevnov (pass 1)
reference error = -0.389631 ppm, target error = 0.257114 ppm
Measured dist: -5.620323 target fitness: 2.692916 stddevs: 70.156975 target, 0.104282 reference
gold result: 44.234071
2019-04-20T19-58-25_618000000_luna <--> 2019-04-20T19-58-25_618000000_brevnov (pass 2)
snr: 3.5 4.0 dB
reference error = 0.005235 ppm, target error = 0.019299 ppm
Measured dist: 44.450060 target fitness: 2.811582 stddevs: 47.028755 target, 0.007729 reference
gold result: 44.234071
| correlation 3816 | 2019-04-20T19-58-25_618000000_luna | 2019-04-20T19-58-25_618000000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 618000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 15.063 stddev = 0.005 reference, 69.556 target [samples]; known correct: 14.580 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-58-25_618000000_luna <--> 2019-04-20T19-58-25_618000000_brmlab (pass 1)
reference error = -0.673593 ppm, target error = -0.229273 ppm
Measured dist: -45.611418 target fitness: 2.689951 stddevs: 69.806763 target, 0.179714 reference
gold result: 14.580081
2019-04-20T19-58-25_618000000_luna <--> 2019-04-20T19-58-25_618000000_brmlab (pass 2)
snr: 3.5 3.5 dB
reference error = -0.000924 ppm, target error = -0.039767 ppm
Measured dist: 15.062851 target fitness: 2.677174 stddevs: 69.556396 target, 0.004669 reference
gold result: 14.580081
| correlation 3817 | 2019-04-20T19-58-25_618000000_brevnov | 2019-04-20T19-58-25_618000000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 618000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -29.626 stddev = 0.009 reference, 0.125 target [samples]; known correct: -29.654 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T19-58-25_618000000_brevnov <--> 2019-04-20T19-58-25_618000000_brmlab (pass 1)
reference error = -0.272791 ppm, target error = -0.296116 ppm
Measured dist: -29.614600 target fitness: 2.780686 stddevs: 53.738670 target, 0.073498 reference
gold result: -29.653990
2019-04-20T19-58-25_618000000_brevnov <--> 2019-04-20T19-58-25_618000000_brmlab (pass 2)
snr: 4.0 3.2 dB
reference error = -0.029256 ppm, target error = -0.020724 ppm
Measured dist: -29.626251 target fitness: 4.524058 stddevs: 0.124666 target, 0.008628 reference
gold result: -29.653990
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
