TDOA measurements at 92600 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 3950 | 2019-04-20T20-43-12_91900000_pankrac | 2019-04-20T20-43-12_91900000_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 | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -0.635 stddev = 0.014 reference, 0.675 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_luna (pass 1)
reference error = 0.276862 ppm, target error = 0.025564 ppm
Measured dist: -0.307865 target fitness: 1.406573 stddevs: 2.253472 target, 0.074292 reference
gold result: -0.000000
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_luna (pass 2)
snr: 44.6 40.5 dB
reference error = 0.023087 ppm, target error = -0.039045 ppm
Measured dist: -0.635304 target fitness: 1.408765 stddevs: 0.674550 target, 0.013561 reference
gold result: -0.000000
| correlation 3951 | 2019-04-20T20-43-12_91900000_pankrac | 2019-04-20T20-43-12_91900000_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 | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.401 stddev = 0.004 reference, 0.529 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brmlab (pass 1)
reference error = 0.528357 ppm, target error = 0.100971 ppm
Measured dist: -0.700874 target fitness: 1.405983 stddevs: 4.381475 target, 0.144732 reference
gold result: -0.000000
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brmlab (pass 2)
snr: 44.6 56.5 dB
reference error = 0.001456 ppm, target error = -0.014300 ppm
Measured dist: -1.401445 target fitness: 1.397138 stddevs: 0.528641 target, 0.004477 reference
gold result: -0.000000
| correlation 3952 | 2019-04-20T20-43-12_91900000_pankrac | 2019-04-20T20-43-12_91900000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -2.772 stddev = 0.004 reference, 1.105 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brevnov (pass 1)
reference error = -0.082645 ppm, target error = -0.044623 ppm
Measured dist: -2.260504 target fitness: 1.409519 stddevs: 1.342674 target, 0.022813 reference
gold result: -0.000000
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 44.6 42.6 dB
reference error = 0.001604 ppm, target error = -0.062157 ppm
Measured dist: -2.771732 target fitness: 1.409970 stddevs: 1.105389 target, 0.003870 reference
gold result: -0.000000
| correlation 3953 | 2019-04-20T20-43-12_91900000_luna | 2019-04-20T20-43-12_91900000_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 | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -0.895 stddev = 0.013 reference, 0.304 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brmlab (pass 1)
reference error = 0.230024 ppm, target error = 0.041859 ppm
Measured dist: -0.550034 target fitness: 1.408666 stddevs: 2.035364 target, 0.062284 reference
gold result: -0.000000
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brmlab (pass 2)
snr: 40.5 57.0 dB
reference error = -0.007506 ppm, target error = 0.037065 ppm
Measured dist: -0.895071 target fitness: 1.411154 stddevs: 0.303996 target, 0.013491 reference
gold result: -0.000000
| correlation 3954 | 2019-04-20T20-43-12_91900000_luna | 2019-04-20T20-43-12_91900000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -2.312 stddev = 0.012 reference, 1.308 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brevnov (pass 1)
reference error = -0.370919 ppm, target error = -0.049698 ppm
Measured dist: -1.255920 target fitness: 1.417300 stddevs: 3.181484 target, 0.098730 reference
gold result: -0.000000
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 40.5 42.6 dB
reference error = -0.005762 ppm, target error = -0.077377 ppm
Measured dist: -2.311975 target fitness: 1.406959 stddevs: 1.308158 target, 0.011762 reference
gold result: -0.000000
| correlation 3955 | 2019-04-20T20-43-12_91900000_brmlab | 2019-04-20T20-43-12_91900000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -1.310 stddev = 0.005 reference, 1.274 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-43-12_91900000_brmlab <--> 2019-04-20T20-43-12_91900000_brevnov (pass 1)
reference error = -0.620601 ppm, target error = -0.084137 ppm
Measured dist: -0.660765 target fitness: 1.414400 stddevs: 5.149656 target, 0.170797 reference
gold result: -0.000000
2019-04-20T20-43-12_91900000_brmlab <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 56.8 42.6 dB
reference error = 0.013523 ppm, target error = -0.052862 ppm
Measured dist: -1.310180 target fitness: 1.410335 stddevs: 1.274444 target, 0.005351 reference
gold result: -0.000000
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
