TDOA measurements at 103700 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 4340 | 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 | 15.065 stddev = 0.006 reference, 1.284 target [samples]; known correct: 15.836 |
| 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 = 0.040515 ppm
Measured dist: 15.697469 target fitness: 1.730504 stddevs: 2.368483 target, 0.081746 reference
gold result: 15.836457
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_luna (pass 2)
snr: 39.8 29.6 dB
reference error = -0.013601 ppm, target error = -0.010618 ppm
Measured dist: 15.065293 target fitness: 1.729845 stddevs: 1.283553 target, 0.006145 reference
gold result: 15.836457
| correlation 4341 | 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 | 30.266 stddev = 0.006 reference, 1.407 target [samples]; known correct: 27.728 |
| 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_brmlab (pass 1)
reference error = -0.356952 ppm, target error = -0.089257 ppm
Measured dist: 29.724982 target fitness: 1.764721 stddevs: 3.265961 target, 0.097297 reference
gold result: 27.728272
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brmlab (pass 2)
snr: 39.7 51.6 dB
reference error = -0.014339 ppm, target error = -0.174906 ppm
Measured dist: 30.266450 target fitness: 1.757748 stddevs: 1.406861 target, 0.005792 reference
gold result: 27.728272
| correlation 4342 | 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 | -38.537 stddev = 0.004 reference, 1.547 target [samples]; known correct: -38.660 |
| 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 = -0.091545 ppm
Measured dist: -38.545739 target fitness: 1.737510 stddevs: 1.564915 target, 0.006958 reference
gold result: -38.660396
2019-04-20T23-44-20_102700000_pankrac <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 39.8 43.9 dB
reference error = 0.000129 ppm, target error = -0.103121 ppm
Measured dist: -38.536627 target fitness: 1.737930 stddevs: 1.546539 target, 0.004361 reference
gold result: -38.660396
| correlation 4343 | 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 | 14.513 stddev = 0.008 reference, 1.220 target [samples]; known correct: 11.892 |
| 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 = -0.081660 ppm
Measured dist: 14.137213 target fitness: 1.706227 stddevs: 5.075799 target, 0.180971 reference
gold result: 11.891815
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brmlab (pass 2)
snr: 29.6 51.2 dB
reference error = 0.016124 ppm, target error = 0.130755 ppm
Measured dist: 14.513319 target fitness: 1.705273 stddevs: 1.220084 target, 0.007570 reference
gold result: 11.891815
| correlation 4344 | 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 | -52.800 stddev = 0.006 reference, 1.493 target [samples]; known correct: -54.497 |
| 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 = -0.092158 ppm
Measured dist: -54.272822 target fitness: 1.764598 stddevs: 2.597805 target, 0.086610 reference
gold result: -54.496853
2019-04-20T23-44-20_102700000_luna <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 29.6 43.9 dB
reference error = 0.011224 ppm, target error = -0.033008 ppm
Measured dist: -52.799700 target fitness: 1.766171 stddevs: 1.493269 target, 0.005844 reference
gold result: -54.496853
| correlation 4345 | 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 | -68.171 stddev = 0.005 reference, 1.230 target [samples]; known correct: -66.389 |
| 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 = -0.001439 ppm
Measured dist: -67.540718 target fitness: 1.870444 stddevs: 2.817250 target, 0.096853 reference
gold result: -66.388668
2019-04-20T23-44-20_102700000_brmlab <--> 2019-04-20T23-44-20_102700000_brevnov (pass 2)
snr: 51.6 43.9 dB
reference error = -0.012015 ppm, target error = 0.048254 ppm
Measured dist: -68.170951 target fitness: 1.867383 stddevs: 1.229896 target, 0.004975 reference
gold result: -66.388668
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
