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 4310 | 2019-04-20T23-22-11_95700000_pankrac | 2019-04-20T23-22-11_95700000_luna |
|---|
| gain | [7, 7, 7, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 52.001 stddev = 0.007 reference, 0.486 target [samples]; known correct: 52.216 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-22-11_95700000_pankrac <--> 2019-04-20T23-22-11_95700000_luna (pass 1)
reference error = 0.288453 ppm, target error = 0.355485 ppm
Measured dist: 48.694806 target fitness: 1.470281 stddevs: 3.327927 target, 0.079855 reference
gold result: 52.216497
2019-04-20T23-22-11_95700000_pankrac <--> 2019-04-20T23-22-11_95700000_luna (pass 2)
snr: 46.2 34.7 dB
reference error = -0.004056 ppm, target error = 0.038506 ppm
Measured dist: 52.000590 target fitness: 1.481606 stddevs: 0.485674 target, 0.006913 reference
gold result: 52.216497
| correlation 4311 | 2019-04-20T23-22-11_95700000_pankrac | 2019-04-20T23-22-11_95700000_brevnov |
|---|
| 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 | 95700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 71.223 stddev = 0.004 reference, 9.543 target [samples]; known correct: 33.653 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-22-11_95700000_pankrac <--> 2019-04-20T23-22-11_95700000_brevnov (pass 1)
reference error = -0.019310 ppm, target error = 0.024486 ppm
Measured dist: 71.239468 target fitness: 1.362541 stddevs: 9.903725 target, 0.006526 reference
gold result: 33.653139
2019-04-20T23-22-11_95700000_pankrac <--> 2019-04-20T23-22-11_95700000_brevnov (pass 2)
snr: 46.2 21.8 dB
reference error = 0.000440 ppm, target error = -0.004546 ppm
Measured dist: 71.223098 target fitness: 1.364242 stddevs: 9.542743 target, 0.004240 reference
gold result: 33.653139
| correlation 4312 | 2019-04-20T23-22-11_95700000_pankrac | 2019-04-20T23-22-11_95700000_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 | 95700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 46.364 stddev = 0.005 reference, 0.529 target [samples]; known correct: 45.570 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-22-11_95700000_pankrac <--> 2019-04-20T23-22-11_95700000_brmlab (pass 1)
reference error = 0.533008 ppm, target error = 0.024803 ppm
Measured dist: 53.572190 target fitness: 1.444665 stddevs: 6.546067 target, 0.145940 reference
gold result: 45.570215
2019-04-20T23-22-11_95700000_pankrac <--> 2019-04-20T23-22-11_95700000_brmlab (pass 2)
snr: 46.2 38.3 dB
reference error = -0.009729 ppm, target error = 0.019732 ppm
Measured dist: 46.363822 target fitness: 1.469941 stddevs: 0.529070 target, 0.005162 reference
gold result: 45.570215
| correlation 4313 | 2019-04-20T23-22-11_95700000_luna | 2019-04-20T23-22-11_95700000_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 | 95700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 18.893 stddev = 0.007 reference, 13.539 target [samples]; known correct: -18.563 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-22-11_95700000_luna <--> 2019-04-20T23-22-11_95700000_brevnov (pass 1)
reference error = -0.314668 ppm, target error = -0.023588 ppm
Measured dist: 22.304621 target fitness: 1.300737 stddevs: 19.842403 target, 0.086534 reference
gold result: -18.563359
2019-04-20T23-22-11_95700000_luna <--> 2019-04-20T23-22-11_95700000_brevnov (pass 2)
snr: 34.7 21.8 dB
reference error = 0.011629 ppm, target error = -0.002599 ppm
Measured dist: 18.892609 target fitness: 1.287941 stddevs: 13.538518 target, 0.006554 reference
gold result: -18.563359
| correlation 4314 | 2019-04-20T23-22-11_95700000_luna | 2019-04-20T23-22-11_95700000_brmlab |
|---|
| 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 | 95700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -5.621 stddev = 0.007 reference, 0.072 target [samples]; known correct: -6.646 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T23-22-11_95700000_luna <--> 2019-04-20T23-22-11_95700000_brmlab (pass 1)
reference error = 0.238123 ppm, target error = -0.159166 ppm
Measured dist: -2.755488 target fitness: 1.405958 stddevs: 3.001678 target, 0.065532 reference
gold result: -6.646282
2019-04-20T23-22-11_95700000_luna <--> 2019-04-20T23-22-11_95700000_brmlab (pass 2)
snr: 34.7 38.1 dB
reference error = 0.002279 ppm, target error = -0.002281 ppm
Measured dist: -5.621116 target fitness: 1.413226 stddevs: 0.072199 target, 0.006766 reference
gold result: -6.646282
| correlation 4315 | 2019-04-20T23-22-11_95700000_brevnov | 2019-04-20T23-22-11_95700000_brmlab |
|---|
| gain | [3, 3, 3, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -24.540 stddev = 0.005 reference, 10.805 target [samples]; known correct: 11.917 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T23-22-11_95700000_brevnov <--> 2019-04-20T23-22-11_95700000_brmlab (pass 1)
reference error = 0.549672 ppm, target error = 0.045172 ppm
Measured dist: -29.536670 target fitness: 1.309649 stddevs: 22.796509 target, 0.150006 reference
gold result: 11.917077
2019-04-20T23-22-11_95700000_brevnov <--> 2019-04-20T23-22-11_95700000_brmlab (pass 2)
snr: 21.8 38.3 dB
reference error = -0.009196 ppm, target error = 0.007289 ppm
Measured dist: -24.539589 target fitness: 1.295133 stddevs: 10.804694 target, 0.004643 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
