TDOA measurements at 95700 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 4244 | 2019-04-20T22-57-50_96200000_pankrac | 2019-04-20T22-57-50_96200000_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 | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 46.216 stddev = 0.011 reference, 0.518 target [samples]; known correct: 45.570 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_brmlab (pass 1)
reference error = 0.487170 ppm, target error = -0.080162 ppm
Measured dist: 40.982002 target fitness: 1.756673 stddevs: 5.140862 target, 0.134296 reference
gold result: 45.570215
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_brmlab (pass 2)
snr: 49.8 44.6 dB
reference error = 0.035384 ppm, target error = 0.064581 ppm
Measured dist: 46.216017 target fitness: 1.752386 stddevs: 0.518358 target, 0.010670 reference
gold result: 45.570215
| correlation 4245 | 2019-04-20T22-57-50_96200000_pankrac | 2019-04-20T22-57-50_96200000_luna |
|---|
| gain | [7, 7, 7, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 51.870 stddev = 0.011 reference, 0.422 target [samples]; known correct: 52.216 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_luna (pass 1)
reference error = 0.268378 ppm, target error = -0.091737 ppm
Measured dist: 50.018384 target fitness: 1.815752 stddevs: 2.657453 target, 0.073618 reference
gold result: 52.216497
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_luna (pass 2)
snr: 49.7 34.6 dB
reference error = 0.010146 ppm, target error = 0.054007 ppm
Measured dist: 51.869702 target fitness: 1.812332 stddevs: 0.422140 target, 0.010771 reference
gold result: 52.216497
| correlation 4246 | 2019-04-20T22-57-50_96200000_pankrac | 2019-04-20T22-57-50_96200000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 70.655 stddev = 0.004 reference, 18.614 target [samples]; known correct: 33.653 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_brevnov (pass 1)
reference error = -0.002732 ppm, target error = -0.067457 ppm
Measured dist: 70.674187 target fitness: 1.551961 stddevs: 18.644953 target, 0.004325 reference
gold result: 33.653139
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_brevnov (pass 2)
snr: 49.7 22.1 dB
reference error = 0.002196 ppm, target error = -0.065018 ppm
Measured dist: 70.655269 target fitness: 1.552277 stddevs: 18.613937 target, 0.004083 reference
gold result: 33.653139
| correlation 4247 | 2019-04-20T22-57-50_96200000_brmlab | 2019-04-20T22-57-50_96200000_luna |
|---|
| gain | [3, 3, 3, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 5.704 stddev = 0.017 reference, 0.572 target [samples]; known correct: 6.646 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_brmlab <--> 2019-04-20T22-57-50_96200000_luna (pass 1)
reference error = -0.196565 ppm, target error = 0.041953 ppm
Measured dist: 7.966083 target fitness: 1.668651 stddevs: 2.400142 target, 0.054031 reference
gold result: 6.646282
2019-04-20T22-57-50_96200000_brmlab <--> 2019-04-20T22-57-50_96200000_luna (pass 2)
snr: 44.3 34.6 dB
reference error = -0.047036 ppm, target error = -0.062847 ppm
Measured dist: 5.703806 target fitness: 1.670173 stddevs: 0.572106 target, 0.016741 reference
gold result: 6.646282
| correlation 4248 | 2019-04-20T22-57-50_96200000_brmlab | 2019-04-20T22-57-50_96200000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 23.560 stddev = 0.005 reference, 20.364 target [samples]; known correct: -11.917 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_brmlab <--> 2019-04-20T22-57-50_96200000_brevnov (pass 1)
reference error = -0.533140 ppm, target error = -0.018904 ppm
Measured dist: 30.523686 target fitness: 1.421016 stddevs: 23.889271 target, 0.145151 reference
gold result: -11.917077
2019-04-20T22-57-50_96200000_brmlab <--> 2019-04-20T22-57-50_96200000_brevnov (pass 2)
snr: 44.7 22.1 dB
reference error = 0.012233 ppm, target error = -0.025318 ppm
Measured dist: 23.559568 target fitness: 1.413397 stddevs: 20.363585 target, 0.005191 reference
gold result: -11.917077
| correlation 4249 | 2019-04-20T22-57-50_96200000_luna | 2019-04-20T22-57-50_96200000_brevnov |
|---|
| 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 | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 18.074 stddev = 0.010 reference, 20.285 target [samples]; known correct: -18.563 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_luna <--> 2019-04-20T22-57-50_96200000_brevnov (pass 1)
reference error = -0.297163 ppm, target error = -0.069263 ppm
Measured dist: 21.377888 target fitness: 1.415747 stddevs: 21.623043 target, 0.080042 reference
gold result: -18.563359
2019-04-20T22-57-50_96200000_luna <--> 2019-04-20T22-57-50_96200000_brevnov (pass 2)
snr: 34.6 22.1 dB
reference error = 0.017330 ppm, target error = -0.030224 ppm
Measured dist: 18.074138 target fitness: 1.413686 stddevs: 20.285192 target, 0.010347 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
