TDOA measurements at 626000 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 3848 | 2019-04-20T20-08-48_626000000_pankrac | 2019-04-20T20-08-48_626000000_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 | 626000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -24.179 stddev = 0.005 reference, 0.042 target [samples]; known correct: -24.045 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-08-48_626000000_pankrac <--> 2019-04-20T20-08-48_626000000_brmlab (pass 1)
reference error = -0.395288 ppm, target error = -0.366199 ppm
Measured dist: -24.269162 target fitness: 2.764215 stddevs: 52.731781 target, 0.108289 reference
gold result: -24.044513
2019-04-20T20-08-48_626000000_pankrac <--> 2019-04-20T20-08-48_626000000_brmlab (pass 2)
snr: 4.2 4.1 dB
reference error = 0.012716 ppm, target error = 0.001417 ppm
Measured dist: -24.179116 target fitness: 10.668191 stddevs: 0.041782 target, 0.005419 reference
gold result: -24.044513
| correlation 3849 | 2019-04-20T20-08-48_626000000_pankrac | 2019-04-20T20-08-48_626000000_luna |
|---|
| gain | [15, 15, 15, 1] | [14, 14, 14, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 626000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -69.179 stddev = 0.014 reference, 0.082 target [samples]; known correct: -69.148 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-08-48_626000000_pankrac <--> 2019-04-20T20-08-48_626000000_luna (pass 1)
reference error = 0.319904 ppm, target error = 0.260861 ppm
Measured dist: -69.186640 target fitness: 8.300102 stddevs: 0.355350 target, 0.088818 reference
gold result: -69.147859
2019-04-20T20-08-48_626000000_pankrac <--> 2019-04-20T20-08-48_626000000_luna (pass 2)
snr: 4.2 4.1 dB
reference error = -0.015612 ppm, target error = -0.054807 ppm
Measured dist: -69.178525 target fitness: 14.292324 stddevs: 0.081524 target, 0.013925 reference
gold result: -69.147859
| correlation 3850 | 2019-04-20T20-08-48_626000000_pankrac | 2019-04-20T20-08-48_626000000_brevnov |
|---|
| 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 | 626000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -9.034 stddev = 0.004 reference, 0.036 target [samples]; known correct: -8.808 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-08-48_626000000_pankrac <--> 2019-04-20T20-08-48_626000000_brevnov (pass 1)
reference error = -0.100010 ppm, target error = -0.106295 ppm
Measured dist: -9.021021 target fitness: 10.518201 stddevs: 0.165400 target, 0.027659 reference
gold result: -8.807681
2019-04-20T20-08-48_626000000_pankrac <--> 2019-04-20T20-08-48_626000000_brevnov (pass 2)
snr: 4.2 6.4 dB
reference error = 0.001819 ppm, target error = 0.004755 ppm
Measured dist: -9.033557 target fitness: 11.146312 stddevs: 0.036084 target, 0.004282 reference
gold result: -8.807681
| correlation 3851 | 2019-04-20T20-08-48_626000000_brmlab | 2019-04-20T20-08-48_626000000_luna |
|---|
| gain | [15, 15, 15, 1] | [14, 14, 14, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 626000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -45.168 stddev = 0.017 reference, 0.052 target [samples]; known correct: -45.103 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-08-48_626000000_brmlab <--> 2019-04-20T20-08-48_626000000_luna (pass 1)
reference error = 0.671872 ppm, target error = 0.654187 ppm
Measured dist: -45.116881 target fitness: 6.797575 stddevs: 0.894633 target, 0.183149 reference
gold result: -45.103346
2019-04-20T20-08-48_626000000_brmlab <--> 2019-04-20T20-08-48_626000000_luna (pass 2)
snr: 3.4 4.1 dB
reference error = 0.013038 ppm, target error = -0.031882 ppm
Measured dist: -45.167914 target fitness: 25.619148 stddevs: 0.051669 target, 0.017460 reference
gold result: -45.103346
| correlation 3852 | 2019-04-20T20-08-48_626000000_brmlab | 2019-04-20T20-08-48_626000000_brevnov |
|---|
| 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 | 626000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 15.281 stddev = 0.008 reference, 0.059 target [samples]; known correct: 15.237 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-08-48_626000000_brmlab <--> 2019-04-20T20-08-48_626000000_brevnov (pass 1)
reference error = 0.263972 ppm, target error = 0.291726 ppm
Measured dist: 15.268544 target fitness: 12.486469 stddevs: 0.399893 target, 0.072531 reference
gold result: 15.236832
2019-04-20T20-08-48_626000000_brmlab <--> 2019-04-20T20-08-48_626000000_brevnov (pass 2)
snr: 3.6 6.4 dB
reference error = 0.026787 ppm, target error = 0.031582 ppm
Measured dist: 15.280640 target fitness: 21.483876 stddevs: 0.058891 target, 0.008418 reference
gold result: 15.236832
| correlation 3853 | 2019-04-20T20-08-48_626000000_luna | 2019-04-20T20-08-48_626000000_brevnov |
|---|
| gain | [14, 14, 14, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 626000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 60.316 stddev = 0.017 reference, 0.049 target [samples]; known correct: 60.340 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-08-48_626000000_luna <--> 2019-04-20T20-08-48_626000000_brevnov (pass 1)
reference error = -0.372126 ppm, target error = -0.365291 ppm
Measured dist: 60.320230 target fitness: 9.515988 stddevs: 0.499518 target, 0.103892 reference
gold result: 60.340178
2019-04-20T20-08-48_626000000_luna <--> 2019-04-20T20-08-48_626000000_brevnov (pass 2)
snr: 4.1 6.4 dB
reference error = -0.027904 ppm, target error = 0.007175 ppm
Measured dist: 60.315767 target fitness: 27.577025 stddevs: 0.048715 target, 0.016730 reference
gold result: 60.340178
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
