TDOA measurements at 786000 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 3836 | 2019-04-20T20-05-20_786000000_pankrac | 2019-04-20T20-05-20_786000000_luna |
|---|
| gain | [15, 15, 15, 1] | [13, 13, 13, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 786000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -71.694 stddev = 0.005 reference, 50.575 target [samples]; known correct: -79.709 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-05-20_786000000_pankrac <--> 2019-04-20T20-05-20_786000000_luna (pass 1)
reference error = 0.291691 ppm, target error = 0.206580 ppm
Measured dist: -71.445689 target fitness: 2.686843 stddevs: 71.351570 target, 0.079344 reference
gold result: -79.708515
2019-04-20T20-05-20_786000000_pankrac <--> 2019-04-20T20-05-20_786000000_luna (pass 2)
snr: 3.1 5.1 dB
reference error = -0.008417 ppm, target error = -0.024653 ppm
Measured dist: -71.693760 target fitness: 2.912380 stddevs: 50.575054 target, 0.005300 reference
gold result: -79.708515
| correlation 3837 | 2019-04-20T20-05-20_786000000_pankrac | 2019-04-20T20-05-20_786000000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 786000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -25.692 stddev = 0.006 reference, 61.432 target [samples]; known correct: -23.986 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
 |
Correlator log
2019-04-20T20-05-20_786000000_pankrac <--> 2019-04-20T20-05-20_786000000_brmlab (pass 1)
reference error = -0.386837 ppm, target error = -0.232068 ppm
Measured dist: 123.216671 target fitness: 2.705715 stddevs: 70.413597 target, 0.104881 reference
gold result: -23.986421
2019-04-20T20-05-20_786000000_pankrac <--> 2019-04-20T20-05-20_786000000_brmlab (pass 2)
snr: 3.1 4.7 dB
reference error = 0.015139 ppm, target error = -0.048252 ppm
Measured dist: -25.691671 target fitness: 2.704549 stddevs: 61.432487 target, 0.005919 reference
gold result: -23.986421
| correlation 3838 | 2019-04-20T20-05-20_786000000_pankrac | 2019-04-20T20-05-20_786000000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 786000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -70.146 stddev = 0.004 reference, 15.290 target [samples]; known correct: -30.718 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-05-20_786000000_pankrac <--> 2019-04-20T20-05-20_786000000_brevnov (pass 1)
reference error = -0.084371 ppm, target error = -0.089817 ppm
Measured dist: -70.141016 target fitness: 4.262216 stddevs: 16.809723 target, 0.023506 reference
gold result: -30.718217
2019-04-20T20-05-20_786000000_pankrac <--> 2019-04-20T20-05-20_786000000_brevnov (pass 2)
snr: 3.2 2.6 dB
reference error = 0.004375 ppm, target error = 0.001855 ppm
Measured dist: -70.145920 target fitness: 4.659874 stddevs: 15.290249 target, 0.004485 reference
gold result: -30.718217
| correlation 3839 | 2019-04-20T20-05-20_786000000_luna | 2019-04-20T20-05-20_786000000_brmlab |
|---|
| gain | [13, 13, 13, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 786000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 45.069 stddev = 0.011 reference, 0.031 target [samples]; known correct: 55.722 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-05-20_786000000_luna <--> 2019-04-20T20-05-20_786000000_brmlab (pass 1)
reference error = -0.631316 ppm, target error = -0.644463 ppm
Measured dist: 45.162485 target fitness: 2.839942 stddevs: 44.838547 target, 0.172558 reference
gold result: 55.722094
2019-04-20T20-05-20_786000000_luna <--> 2019-04-20T20-05-20_786000000_brmlab (pass 2)
snr: 5.1 3.5 dB
reference error = -0.021546 ppm, target error = -0.012880 ppm
Measured dist: 45.068612 target fitness: 20.767893 stddevs: 0.030658 target, 0.011454 reference
gold result: 55.722094
| correlation 3840 | 2019-04-20T20-05-20_786000000_luna | 2019-04-20T20-05-20_786000000_brevnov |
|---|
| gain | [13, 13, 13, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 786000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 49.175 stddev = 0.013 reference, 0.072 target [samples]; known correct: 48.990 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-05-20_786000000_luna <--> 2019-04-20T20-05-20_786000000_brevnov (pass 1)
reference error = -0.322670 ppm, target error = -0.110492 ppm
Measured dist: 20.442559 target fitness: 2.679502 stddevs: 71.386345 target, 0.088315 reference
gold result: 48.990299
2019-04-20T20-05-20_786000000_luna <--> 2019-04-20T20-05-20_786000000_brevnov (pass 2)
snr: 5.1 2.6 dB
reference error = -0.034124 ppm, target error = -0.045369 ppm
Measured dist: 49.174541 target fitness: 35.864376 stddevs: 0.072414 target, 0.013152 reference
gold result: 48.990299
| correlation 3841 | 2019-04-20T20-05-20_786000000_brmlab | 2019-04-20T20-05-20_786000000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 786000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -6.829 stddev = 0.004 reference, 0.042 target [samples]; known correct: -6.732 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-05-20_786000000_brmlab <--> 2019-04-20T20-05-20_786000000_brevnov (pass 1)
reference error = 0.300939 ppm, target error = 0.278328 ppm
Measured dist: -6.829964 target fitness: 4.381261 stddevs: 0.403438 target, 0.082248 reference
gold result: -6.731796
2019-04-20T20-05-20_786000000_brmlab <--> 2019-04-20T20-05-20_786000000_brevnov (pass 2)
snr: 4.4 2.7 dB
reference error = -0.004370 ppm, target error = 0.002503 ppm
Measured dist: -6.828794 target fitness: 17.688988 stddevs: 0.041964 target, 0.004221 reference
gold result: -6.731796
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
