TDOA measurements at 96200 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 4262 | 2019-04-20T23-02-33_97200000_pankrac | 2019-04-20T23-02-33_97200000_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 | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -0.720 stddev = 0.006 reference, 1.378 target [samples]; known correct: -2.870 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_brmlab (pass 1)
reference error = -0.376870 ppm, target error = 0.001729 ppm
Measured dist: -1.388122 target fitness: 1.885942 stddevs: 2.666059 target, 0.101727 reference
gold result: -2.869775
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_brmlab (pass 2)
snr: 26.9 37.9 dB
reference error = 0.014050 ppm, target error = -0.205449 ppm
Measured dist: -0.719737 target fitness: 1.900009 stddevs: 1.378180 target, 0.005506 reference
gold result: -2.869775
| correlation 4263 | 2019-04-20T23-02-33_97200000_pankrac | 2019-04-20T23-02-33_97200000_luna |
|---|
| gain | [8, 8, 8, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -41.465 stddev = 0.012 reference, 1.850 target [samples]; known correct: -41.645 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_luna (pass 1)
reference error = 0.248548 ppm, target error = 0.064030 ppm
Measured dist: -41.841360 target fitness: 1.968107 stddevs: 2.600725 target, 0.068816 reference
gold result: -41.645325
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_luna (pass 2)
snr: 26.8 27.8 dB
reference error = 0.034007 ppm, target error = 0.015421 ppm
Measured dist: -41.465424 target fitness: 1.977767 stddevs: 1.850291 target, 0.012486 reference
gold result: -41.645325
| correlation 4264 | 2019-04-20T23-02-33_97200000_pankrac | 2019-04-20T23-02-33_97200000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -39.523 stddev = 0.004 reference, 1.586 target [samples]; known correct: -42.720 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_brevnov (pass 1)
reference error = -0.021478 ppm, target error = -0.085578 ppm
Measured dist: -39.579961 target fitness: 1.985643 stddevs: 1.597466 target, 0.007330 reference
gold result: -42.719992
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_brevnov (pass 2)
snr: 26.9 49.2 dB
reference error = 0.002463 ppm, target error = -0.124188 ppm
Measured dist: -39.523082 target fitness: 1.985543 stddevs: 1.586099 target, 0.004256 reference
gold result: -42.719992
| correlation 4265 | 2019-04-20T23-02-33_97200000_brmlab | 2019-04-20T23-02-33_97200000_luna |
|---|
| gain | [3, 3, 3, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -39.751 stddev = 0.010 reference, 1.338 target [samples]; known correct: -38.776 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_brmlab <--> 2019-04-20T23-02-33_97200000_luna (pass 1)
reference error = 0.646764 ppm, target error = 0.109317 ppm
Measured dist: -39.704912 target fitness: 1.967333 stddevs: 4.410361 target, 0.176822 reference
gold result: -38.775550
2019-04-20T23-02-33_97200000_brmlab <--> 2019-04-20T23-02-33_97200000_luna (pass 2)
snr: 39.3 27.8 dB
reference error = -0.002428 ppm, target error = -0.083560 ppm
Measured dist: -39.750860 target fitness: 1.998145 stddevs: 1.338401 target, 0.009643 reference
gold result: -38.775550
| correlation 4266 | 2019-04-20T23-02-33_97200000_brmlab | 2019-04-20T23-02-33_97200000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -38.760 stddev = 0.004 reference, 1.126 target [samples]; known correct: -39.850 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_brmlab <--> 2019-04-20T23-02-33_97200000_brevnov (pass 1)
reference error = 0.346559 ppm, target error = 0.027337 ppm
Measured dist: -38.063959 target fitness: 1.999678 stddevs: 2.399326 target, 0.094311 reference
gold result: -39.850218
2019-04-20T23-02-33_97200000_brmlab <--> 2019-04-20T23-02-33_97200000_brevnov (pass 2)
snr: 38.1 49.3 dB
reference error = -0.005191 ppm, target error = 0.178623 ppm
Measured dist: -38.759598 target fitness: 2.002478 stddevs: 1.125567 target, 0.004380 reference
gold result: -39.850218
| correlation 4267 | 2019-04-20T23-02-33_97200000_luna | 2019-04-20T23-02-33_97200000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 1.152 stddev = 0.009 reference, 1.363 target [samples]; known correct: -1.075 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_luna <--> 2019-04-20T23-02-33_97200000_brevnov (pass 1)
reference error = -0.318689 ppm, target error = -0.071692 ppm
Measured dist: 1.396795 target fitness: 1.922349 stddevs: 2.326991 target, 0.086979 reference
gold result: -1.074668
2019-04-20T23-02-33_97200000_luna <--> 2019-04-20T23-02-33_97200000_brevnov (pass 2)
snr: 27.8 49.3 dB
reference error = 0.018673 ppm, target error = 0.058830 ppm
Measured dist: 1.152384 target fitness: 1.916754 stddevs: 1.362905 target, 0.009298 reference
gold result: -1.074668
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
