TDOA measurements at 103400 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 4352 | 2019-04-20T23-44-20_102700000_pankrac | 2019-04-20T23-44-20_102700000_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 | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -47.987 stddev = 0.006 reference, 4.182 target [samples]; known correct: -49.049 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_luna (pass 1)
reference error = 0.304324 ppm, target error = -0.031620 ppm
Measured dist: -47.342193 target fitness: 1.373480 stddevs: 5.311019 target, 0.081746 reference
gold result: -49.049125
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_luna (pass 2)
snr: 17.4 16.4 dB
reference error = -0.013601 ppm, target error = 0.023240 ppm
Measured dist: -47.987394 target fitness: 1.372123 stddevs: 4.182395 target, 0.006145 reference
gold result: -49.049125
| correlation 4353 | 2019-04-20T23-44-20_102700000_pankrac | 2019-04-20T23-44-20_102700000_brmlab |
|---|
| 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 | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -2.593 stddev = 0.006 reference, 5.088 target [samples]; known correct: 0.877 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brmlab (pass 1)
reference error = -0.356952 ppm, target error = -0.079011 ppm
Measured dist: -2.161775 target fitness: 1.333998 stddevs: 6.619771 target, 0.097297 reference
gold result: 0.876883
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brmlab (pass 2)
snr: 17.4 19.0 dB
reference error = -0.014264 ppm, target error = -0.104132 ppm
Measured dist: -2.593312 target fitness: 1.334121 stddevs: 5.088237 target, 0.005780 reference
gold result: 0.876883
| correlation 4354 | 2019-04-20T23-44-20_102700000_pankrac | 2019-04-20T23-44-20_102700000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -58.677 stddev = 0.004 reference, 3.079 target [samples]; known correct: -58.566 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brevnov (pass 1)
reference error = -0.021349 ppm, target error = -0.053304 ppm
Measured dist: -58.760645 target fitness: 1.435748 stddevs: 3.089100 target, 0.006958 reference
gold result: -58.565514
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 17.4 36.1 dB
reference error = 0.000129 ppm, target error = -0.072916 ppm
Measured dist: -58.676973 target fitness: 1.435292 stddevs: 3.078894 target, 0.004361 reference
gold result: -58.565514
| correlation 4355 | 2019-04-20T23-44-20_102700000_luna | 2019-04-20T23-44-20_102700000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 46.565 stddev = 0.008 reference, 4.168 target [samples]; known correct: 49.926 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brmlab (pass 1)
reference error = -0.672284 ppm, target error = -0.108604 ppm
Measured dist: 46.169496 target fitness: 1.354427 stddevs: 8.692745 target, 0.180971 reference
gold result: 49.926007
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brmlab (pass 2)
snr: 16.4 19.1 dB
reference error = 0.016085 ppm, target error = 0.083066 ppm
Measured dist: 46.565141 target fitness: 1.351131 stddevs: 4.167616 target, 0.007575 reference
gold result: 49.926007
| correlation 4356 | 2019-04-20T23-44-20_102700000_luna | 2019-04-20T23-44-20_102700000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -11.781 stddev = 0.006 reference, 1.325 target [samples]; known correct: -9.516 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brevnov (pass 1)
reference error = -0.320198 ppm, target error = -0.034070 ppm
Measured dist: -10.372517 target fitness: 1.313193 stddevs: 3.452929 target, 0.086610 reference
gold result: -9.516389
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 16.4 36.1 dB
reference error = 0.011224 ppm, target error = 0.002602 ppm
Measured dist: -11.781276 target fitness: 1.309465 stddevs: 1.324651 target, 0.005844 reference
gold result: -9.516389
| correlation 4357 | 2019-04-20T23-44-20_102700000_brmlab | 2019-04-20T23-44-20_102700000_brevnov |
|---|
| gain | [5, 5, 5, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -57.145 stddev = 0.005 reference, 2.278 target [samples]; known correct: -59.442 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-44-20_102700000_brmlab <--> 2019-04-20T23-44-20_102700000_brevnov (pass 1)
reference error = 0.359323 ppm, target error = 0.003498 ppm
Measured dist: -57.444916 target fitness: 1.428185 stddevs: 4.157126 target, 0.096853 reference
gold result: -59.442397
2019-04-20T23-44-20_102700000_brmlab <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 19.0 36.1 dB
reference error = -0.012015 ppm, target error = -0.035939 ppm
Measured dist: -57.144970 target fitness: 1.436106 stddevs: 2.277887 target, 0.004975 reference
gold result: -59.442397
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
