TDOA measurements at 91900 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 4226 | 2019-04-20T22-36-22_92300000_pankrac | 2019-04-20T22-36-22_92300000_brmlab |
|---|
| 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 | 92300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 21.712 stddev = 0.009 reference, 0.862 target [samples]; known correct: 29.106 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-36-22_92300000_pankrac <--> 2019-04-20T22-36-22_92300000_brmlab (pass 1)
reference error = -0.342030 ppm, target error = 0.099032 ppm
Measured dist: 20.833123 target fitness: 1.156294 stddevs: 5.122000 target, 0.092374 reference
gold result: 29.106471
2019-04-20T22-36-22_92300000_pankrac <--> 2019-04-20T22-36-22_92300000_brmlab (pass 2)
snr: 40.2 43.6 dB
reference error = -0.028267 ppm, target error = -0.051501 ppm
Measured dist: 21.712280 target fitness: 1.156847 stddevs: 0.861681 target, 0.008768 reference
gold result: 29.106471
| correlation 4227 | 2019-04-20T22-36-22_92300000_pankrac | 2019-04-20T22-36-22_92300000_luna |
|---|
| gain | [8, 8, 8, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 10.467 stddev = 0.011 reference, 1.177 target [samples]; known correct: 17.803 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-36-22_92300000_pankrac <--> 2019-04-20T22-36-22_92300000_luna (pass 1)
reference error = 0.269917 ppm, target error = -0.021751 ppm
Measured dist: 11.190193 target fitness: 1.154850 stddevs: 4.137109 target, 0.073552 reference
gold result: 17.802583
2019-04-20T22-36-22_92300000_pankrac <--> 2019-04-20T22-36-22_92300000_luna (pass 2)
snr: 40.2 34.7 dB
reference error = 0.031315 ppm, target error = 0.071671 ppm
Measured dist: 10.467081 target fitness: 1.154563 stddevs: 1.177027 target, 0.010816 reference
gold result: 17.802583
| correlation 4228 | 2019-04-20T22-36-22_92300000_pankrac | 2019-04-20T22-36-22_92300000_brevnov |
|---|
| 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 | 92300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -41.426 stddev = 0.004 reference, 1.554 target [samples]; known correct: -37.247 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-36-22_92300000_pankrac <--> 2019-04-20T22-36-22_92300000_brevnov (pass 1)
reference error = -0.023152 ppm, target error = -0.004887 ppm
Measured dist: -40.830942 target fitness: 1.172018 stddevs: 1.598947 target, 0.007393 reference
gold result: -37.247119
2019-04-20T22-36-22_92300000_pankrac <--> 2019-04-20T22-36-22_92300000_brevnov (pass 2)
snr: 40.2 46.2 dB
reference error = 0.003503 ppm, target error = 0.069229 ppm
Measured dist: -41.426102 target fitness: 1.172111 stddevs: 1.554460 target, 0.003985 reference
gold result: -37.247119
| correlation 4229 | 2019-04-20T22-36-22_92300000_brmlab | 2019-04-20T22-36-22_92300000_luna |
|---|
| gain | [3, 3, 3, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -11.066 stddev = 0.012 reference, 0.924 target [samples]; known correct: -11.304 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-36-22_92300000_brmlab <--> 2019-04-20T22-36-22_92300000_luna (pass 1)
reference error = 0.625151 ppm, target error = 0.034633 ppm
Measured dist: -10.027416 target fitness: 1.163209 stddevs: 18.216784 target, 0.170443 reference
gold result: -11.303888
2019-04-20T22-36-22_92300000_brmlab <--> 2019-04-20T22-36-22_92300000_luna (pass 2)
snr: 43.3 34.7 dB
reference error = 0.034716 ppm, target error = -0.002272 ppm
Measured dist: -11.066002 target fitness: 1.165296 stddevs: 0.924386 target, 0.011515 reference
gold result: -11.303888
| correlation 4230 | 2019-04-20T22-36-22_92300000_brmlab | 2019-04-20T22-36-22_92300000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -63.201 stddev = 0.005 reference, 1.690 target [samples]; known correct: -66.354 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-36-22_92300000_brmlab <--> 2019-04-20T22-36-22_92300000_brevnov (pass 1)
reference error = 0.359584 ppm, target error = -0.054991 ppm
Measured dist: -61.646147 target fitness: 1.193417 stddevs: 4.899857 target, 0.097497 reference
gold result: -66.353590
2019-04-20T22-36-22_92300000_brmlab <--> 2019-04-20T22-36-22_92300000_brevnov (pass 2)
snr: 43.7 46.2 dB
reference error = -0.013771 ppm, target error = 0.120528 ppm
Measured dist: -63.201418 target fitness: 1.201689 stddevs: 1.690130 target, 0.005322 reference
gold result: -66.353590
| correlation 4231 | 2019-04-20T22-36-22_92300000_luna | 2019-04-20T22-36-22_92300000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -51.264 stddev = 0.008 reference, 2.097 target [samples]; known correct: -55.050 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-36-22_92300000_luna <--> 2019-04-20T22-36-22_92300000_brevnov (pass 1)
reference error = -0.330500 ppm, target error = 0.078575 ppm
Measured dist: -55.809542 target fitness: 1.188268 stddevs: 4.720583 target, 0.089394 reference
gold result: -55.049702
2019-04-20T22-36-22_92300000_luna <--> 2019-04-20T22-36-22_92300000_brevnov (pass 2)
snr: 34.7 46.2 dB
reference error = 0.012045 ppm, target error = -0.084052 ppm
Measured dist: -51.263839 target fitness: 1.180396 stddevs: 2.096546 target, 0.007946 reference
gold result: -55.049702
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
