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 4178 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_luna |
|---|
| gain | [8, 8, 8, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 52.070 stddev = 0.008 reference, 0.450 target [samples]; known correct: 52.216 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_luna (pass 1)
reference error = 0.271743 ppm, target error = 0.028367 ppm
Measured dist: 51.294594 target fitness: 1.603929 stddevs: 2.476673 target, 0.072011 reference
gold result: 52.216497
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_luna (pass 2)
snr: 45.3 34.1 dB
reference error = -0.008705 ppm, target error = 0.003238 ppm
Measured dist: 52.070437 target fitness: 1.606385 stddevs: 0.449659 target, 0.007580 reference
gold result: 52.216497
| correlation 4179 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 66.352 stddev = 0.004 reference, 9.979 target [samples]; known correct: 33.653 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brevnov (pass 1)
reference error = -0.009204 ppm, target error = 0.037943 ppm
Measured dist: 66.363790 target fitness: 1.424556 stddevs: 9.973989 target, 0.004489 reference
gold result: 33.653139
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brevnov (pass 2)
snr: 45.3 23.9 dB
reference error = -0.000627 ppm, target error = 0.058294 ppm
Measured dist: 66.351635 target fitness: 1.423841 stddevs: 9.978741 target, 0.004196 reference
gold result: 33.653139
| correlation 4180 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_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 | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 46.266 stddev = 0.009 reference, 0.528 target [samples]; known correct: 45.570 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.343237 ppm, target error = 0.016268 ppm
Measured dist: 46.969861 target fitness: 1.606975 stddevs: 3.409738 target, 0.093978 reference
gold result: 45.570215
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 45.3 37.0 dB
reference error = -0.027331 ppm, target error = -0.029231 ppm
Measured dist: 46.266143 target fitness: 1.604447 stddevs: 0.528023 target, 0.008671 reference
gold result: 45.570215
| correlation 4181 | 2019-04-20T22-11-43_95300000_luna | 2019-04-20T22-11-43_95300000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 13.552 stddev = 0.012 reference, 11.632 target [samples]; known correct: -18.563 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brevnov (pass 1)
reference error = -0.238407 ppm, target error = 0.033320 ppm
Measured dist: 21.015392 target fitness: 1.322711 stddevs: 14.219395 target, 0.062924 reference
gold result: -18.563359
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brevnov (pass 2)
snr: 34.1 23.9 dB
reference error = -0.039133 ppm, target error = 0.030621 ppm
Measured dist: 13.552088 target fitness: 1.320474 stddevs: 11.631697 target, 0.012283 reference
gold result: -18.563359
| correlation 4182 | 2019-04-20T22-11-43_95300000_luna | 2019-04-20T22-11-43_95300000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -5.795 stddev = 0.007 reference, 0.433 target [samples]; known correct: -6.646 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.624331 ppm, target error = 0.001360 ppm
Measured dist: -9.332363 target fitness: 1.497673 stddevs: 5.980461 target, 0.168717 reference
gold result: -6.646282
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 34.1 36.4 dB
reference error = -0.003167 ppm, target error = -0.058485 ppm
Measured dist: -5.794665 target fitness: 1.508350 stddevs: 0.433219 target, 0.007226 reference
gold result: -6.646282
| correlation 4183 | 2019-04-20T22-11-43_95300000_brevnov | 2019-04-20T22-11-43_95300000_brmlab |
|---|
| 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 | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -19.591 stddev = 0.006 reference, 11.465 target [samples]; known correct: 11.917 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-11-43_95300000_brevnov <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.371564 ppm, target error = 0.043514 ppm
Measured dist: -25.317990 target fitness: 1.323160 stddevs: 15.294450 target, 0.100605 reference
gold result: 11.917077
2019-04-20T22-11-43_95300000_brevnov <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 23.9 37.1 dB
reference error = 0.013626 ppm, target error = -0.002876 ppm
Measured dist: -19.590608 target fitness: 1.325439 stddevs: 11.465156 target, 0.005781 reference
gold result: 11.917077
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
