TDOA measurements at 95300 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 4010 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_luna |
|---|
| gain | [8, 8, 8, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.712 stddev = 0.016 reference, 1.127 target [samples]; known correct: -4.303 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_luna (pass 1)
reference error = 0.254754 ppm, target error = -0.022459 ppm
Measured dist: -1.859168 target fitness: 2.369829 stddevs: 1.822797 target, 0.069949 reference
gold result: -4.303374
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_luna (pass 2)
snr: 37.8 36.2 dB
reference error = 0.040613 ppm, target error = -0.084968 ppm
Measured dist: -1.711973 target fitness: 2.382362 stddevs: 1.127165 target, 0.016220 reference
gold result: -4.303374
| correlation 4011 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -13.090 stddev = 0.006 reference, 2.096 target [samples]; known correct: -13.028 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brmlab (pass 1)
reference error = -0.384269 ppm, target error = -0.155210 ppm
Measured dist: -13.794677 target fitness: 2.357719 stddevs: 2.946281 target, 0.104508 reference
gold result: -13.028337
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brmlab (pass 2)
snr: 37.8 46.7 dB
reference error = 0.014576 ppm, target error = -0.175915 ppm
Measured dist: -13.089846 target fitness: 2.364013 stddevs: 2.095790 target, 0.005669 reference
gold result: -13.028337
| correlation 4012 | 2019-04-20T21-03-18_94600000_pankrac | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 6.154 stddev = 0.004 reference, 0.947 target [samples]; known correct: 8.032 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = -0.094468 ppm, target error = -0.191871 ppm
Measured dist: 6.110199 target fitness: 2.389108 stddevs: 1.085549 target, 0.026387 reference
gold result: 8.032402
2019-04-20T21-03-18_94600000_pankrac <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 37.8 49.5 dB
reference error = 0.005621 ppm, target error = -0.104211 ppm
Measured dist: 6.153729 target fitness: 2.392675 stddevs: 0.947192 target, 0.004405 reference
gold result: 8.032402
| correlation 4013 | 2019-04-20T21-03-18_94600000_luna | 2019-04-20T21-03-18_94600000_brmlab |
|---|
| gain | [10, 10, 10, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -11.316 stddev = 0.017 reference, 1.093 target [samples]; known correct: -8.725 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brmlab (pass 1)
reference error = -0.702450 ppm, target error = 0.024302 ppm
Measured dist: -12.647139 target fitness: 2.276346 stddevs: 3.680694 target, 0.188378 reference
gold result: -8.724964
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brmlab (pass 2)
snr: 36.2 46.7 dB
reference error = 0.041756 ppm, target error = 0.006738 ppm
Measured dist: -11.316162 target fitness: 2.298029 stddevs: 1.093330 target, 0.017433 reference
gold result: -8.724964
| correlation 4014 | 2019-04-20T21-03-18_94600000_luna | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 8.029 stddev = 0.013 reference, 0.518 target [samples]; known correct: 12.336 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = -0.397918 ppm, target error = 0.026797 ppm
Measured dist: 7.357201 target fitness: 2.352721 stddevs: 2.064747 target, 0.110107 reference
gold result: 12.335776
2019-04-20T21-03-18_94600000_luna <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 36.2 49.5 dB
reference error = 0.019760 ppm, target error = 0.045397 ppm
Measured dist: 8.029425 target fitness: 2.354796 stddevs: 0.518158 target, 0.012584 reference
gold result: 12.335776
| correlation 4015 | 2019-04-20T21-03-18_94600000_brmlab | 2019-04-20T21-03-18_94600000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 94600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 19.506 stddev = 0.007 reference, 1.420 target [samples]; known correct: 21.061 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-03-18_94600000_brmlab <--> 2019-04-20T21-03-18_94600000_brevnov (pass 1)
reference error = 0.258172 ppm, target error = 0.057772 ppm
Measured dist: 19.988496 target fitness: 2.339203 stddevs: 2.031722 target, 0.071031 reference
gold result: 21.060739
2019-04-20T21-03-18_94600000_brmlab <--> 2019-04-20T21-03-18_94600000_brevnov (pass 2)
snr: 46.6 49.5 dB
reference error = 0.022634 ppm, target error = 0.057684 ppm
Measured dist: 19.505610 target fitness: 2.341578 stddevs: 1.420468 target, 0.007428 reference
gold result: 21.060739
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
