TDOA measurements at 98700 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 4064 | 2019-04-20T21-28-35_99700000_pankrac | 2019-04-20T21-28-35_99700000_brmlab |
|---|
| gain | [1, 1, 1, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 47.545 stddev = 0.005 reference, 1.752 target [samples]; known correct: 45.570 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_brmlab (pass 1)
reference error = 0.538906 ppm, target error = 0.093740 ppm
Measured dist: 47.568688 target fitness: 2.025069 stddevs: 3.010849 target, 0.148419 reference
gold result: 45.570215
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_brmlab (pass 2)
snr: 30.1 48.3 dB
reference error = -0.007916 ppm, target error = 0.114770 ppm
Measured dist: 47.545429 target fitness: 2.040051 stddevs: 1.752464 target, 0.004899 reference
gold result: 45.570215
| correlation 4065 | 2019-04-20T21-28-35_99700000_pankrac | 2019-04-20T21-28-35_99700000_luna |
|---|
| gain | [1, 1, 1, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 54.820 stddev = 0.008 reference, 1.296 target [samples]; known correct: 52.216 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_luna (pass 1)
reference error = 0.290155 ppm, target error = 0.018941 ppm
Measured dist: 54.376636 target fitness: 2.066371 stddevs: 1.772755 target, 0.079866 reference
gold result: 52.216497
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_luna (pass 2)
snr: 30.1 31.5 dB
reference error = -0.008502 ppm, target error = 0.033135 ppm
Measured dist: 54.819778 target fitness: 2.077147 stddevs: 1.295589 target, 0.008028 reference
gold result: 52.216497
| correlation 4066 | 2019-04-20T21-28-35_99700000_pankrac | 2019-04-20T21-28-35_99700000_brevnov |
|---|
| gain | [1, 1, 1, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 83.103 stddev = 0.004 reference, 24.418 target [samples]; known correct: 33.653 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_brevnov (pass 1)
reference error = -0.094854 ppm, target error = 0.025682 ppm
Measured dist: 83.861231 target fitness: 1.710204 stddevs: 24.516483 target, 0.026042 reference
gold result: 33.653139
2019-04-20T21-28-35_99700000_pankrac <--> 2019-04-20T21-28-35_99700000_brevnov (pass 2)
snr: 30.1 36.4 dB
reference error = 0.001656 ppm, target error = -0.000463 ppm
Measured dist: 83.102549 target fitness: 1.702721 stddevs: 24.418306 target, 0.003803 reference
gold result: 33.653139
| correlation 4067 | 2019-04-20T21-28-35_99700000_brmlab | 2019-04-20T21-28-35_99700000_luna |
|---|
| gain | [5, 5, 5, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 6.182 stddev = 0.008 reference, 1.185 target [samples]; known correct: 6.646 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_brmlab <--> 2019-04-20T21-28-35_99700000_luna (pass 1)
reference error = -0.239881 ppm, target error = -0.161165 ppm
Measured dist: 6.681766 target fitness: 1.926501 stddevs: 1.933785 target, 0.066749 reference
gold result: 6.646282
2019-04-20T21-28-35_99700000_brmlab <--> 2019-04-20T21-28-35_99700000_luna (pass 2)
snr: 47.8 31.5 dB
reference error = 0.000234 ppm, target error = -0.019112 ppm
Measured dist: 6.181667 target fitness: 1.926377 stddevs: 1.184640 target, 0.007740 reference
gold result: 6.646282
| correlation 4068 | 2019-04-20T21-28-35_99700000_brmlab | 2019-04-20T21-28-35_99700000_brevnov |
|---|
| gain | [5, 5, 5, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -9.556 stddev = 0.005 reference, 22.522 target [samples]; known correct: -11.917 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_brmlab <--> 2019-04-20T21-28-35_99700000_brevnov (pass 1)
reference error = -0.633042 ppm, target error = -0.022921 ppm
Measured dist: -10.757584 target fitness: 1.540339 stddevs: 23.791714 target, 0.174090 reference
gold result: -11.917077
2019-04-20T21-28-35_99700000_brmlab <--> 2019-04-20T21-28-35_99700000_brevnov (pass 2)
snr: 47.5 36.4 dB
reference error = 0.011588 ppm, target error = 0.053248 ppm
Measured dist: -9.556288 target fitness: 1.530559 stddevs: 22.521780 target, 0.005250 reference
gold result: -11.917077
| correlation 4069 | 2019-04-20T21-28-35_99700000_luna | 2019-04-20T21-28-35_99700000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 99700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -18.607 stddev = 0.010 reference, 23.488 target [samples]; known correct: -18.563 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-28-35_99700000_luna <--> 2019-04-20T21-28-35_99700000_brevnov (pass 1)
reference error = -0.393270 ppm, target error = 0.038051 ppm
Measured dist: -18.391442 target fitness: 1.538200 stddevs: 24.119217 target, 0.107319 reference
gold result: -18.563359
2019-04-20T21-28-35_99700000_luna <--> 2019-04-20T21-28-35_99700000_brevnov (pass 2)
snr: 31.5 36.5 dB
reference error = 0.020665 ppm, target error = -0.061823 ppm
Measured dist: -18.607338 target fitness: 1.539830 stddevs: 23.487553 target, 0.009541 reference
gold result: -18.563359
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
