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 3962 | 2019-04-20T20-51-15_92600000_pankrac | 2019-04-20T20-51-15_92600000_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 | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 10.710 stddev = 0.010 reference, 0.782 target [samples]; known correct: 17.803 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_luna (pass 1)
reference error = 0.292188 ppm, target error = -0.071200 ppm
Measured dist: 10.356095 target fitness: 1.466772 stddevs: 2.359423 target, 0.080643 reference
gold result: 17.802583
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_luna (pass 2)
snr: 46.2 39.5 dB
reference error = -0.007249 ppm, target error = -0.048983 ppm
Measured dist: 10.709902 target fitness: 1.468279 stddevs: 0.781988 target, 0.010121 reference
gold result: 17.802583
| correlation 3963 | 2019-04-20T20-51-15_92600000_pankrac | 2019-04-20T20-51-15_92600000_brmlab |
|---|
| gain | [7, 7, 7, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 21.865 stddev = 0.007 reference, 0.552 target [samples]; known correct: 29.106 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_brmlab (pass 1)
reference error = -0.389683 ppm, target error = 0.049610 ppm
Measured dist: 23.415001 target fitness: 1.485139 stddevs: 3.207918 target, 0.106421 reference
gold result: 29.106471
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_brmlab (pass 2)
snr: 46.2 46.9 dB
reference error = 0.018650 ppm, target error = -0.052882 ppm
Measured dist: 21.864864 target fitness: 1.480881 stddevs: 0.551511 target, 0.006597 reference
gold result: 29.106471
| correlation 3964 | 2019-04-20T20-51-15_92600000_pankrac | 2019-04-20T20-51-15_92600000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -40.439 stddev = 0.005 reference, 1.071 target [samples]; known correct: -37.247 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_brevnov (pass 1)
reference error = -0.091030 ppm, target error = -0.067447 ppm
Measured dist: -40.525791 target fitness: 1.505386 stddevs: 1.373129 target, 0.024929 reference
gold result: -37.247119
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_brevnov (pass 2)
snr: 46.2 51.3 dB
reference error = 0.004837 ppm, target error = -0.009787 ppm
Measured dist: -40.439098 target fitness: 1.503565 stddevs: 1.071259 target, 0.004604 reference
gold result: -37.247119
| correlation 3965 | 2019-04-20T20-51-15_92600000_luna | 2019-04-20T20-51-15_92600000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 11.231 stddev = 0.012 reference, 0.609 target [samples]; known correct: 11.304 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_luna <--> 2019-04-20T20-51-15_92600000_brmlab (pass 1)
reference error = -0.676684 ppm, target error = 0.033233 ppm
Measured dist: 12.174310 target fitness: 1.489513 stddevs: 5.154003 target, 0.182911 reference
gold result: 11.303888
2019-04-20T20-51-15_92600000_luna <--> 2019-04-20T20-51-15_92600000_brmlab (pass 2)
snr: 39.4 45.9 dB
reference error = 0.022049 ppm, target error = 0.021771 ppm
Measured dist: 11.231093 target fitness: 1.488483 stddevs: 0.609261 target, 0.012277 reference
gold result: 11.303888
| correlation 3966 | 2019-04-20T20-51-15_92600000_luna | 2019-04-20T20-51-15_92600000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -51.030 stddev = 0.009 reference, 1.405 target [samples]; known correct: -55.050 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_luna <--> 2019-04-20T20-51-15_92600000_brevnov (pass 1)
reference error = -0.384742 ppm, target error = 0.075827 ppm
Measured dist: -50.849995 target fitness: 1.563025 stddevs: 3.321012 target, 0.106042 reference
gold result: -55.049702
2019-04-20T20-51-15_92600000_luna <--> 2019-04-20T20-51-15_92600000_brevnov (pass 2)
snr: 39.5 51.3 dB
reference error = 0.015272 ppm, target error = 0.044938 ppm
Measured dist: -51.029924 target fitness: 1.566486 stddevs: 1.405215 target, 0.009352 reference
gold result: -55.049702
| correlation 3967 | 2019-04-20T20-51-15_92600000_brmlab | 2019-04-20T20-51-15_92600000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -62.476 stddev = 0.007 reference, 1.157 target [samples]; known correct: -66.354 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_brmlab <--> 2019-04-20T20-51-15_92600000_brevnov (pass 1)
reference error = 0.266152 ppm, target error = -0.056292 ppm
Measured dist: -63.882901 target fitness: 1.642173 stddevs: 2.575523 target, 0.071930 reference
gold result: -66.353590
2019-04-20T20-51-15_92600000_brmlab <--> 2019-04-20T20-51-15_92600000_brevnov (pass 2)
snr: 46.6 51.3 dB
reference error = 0.022081 ppm, target error = -0.003892 ppm
Measured dist: -62.476009 target fitness: 1.648709 stddevs: 1.156619 target, 0.007129 reference
gold result: -66.353590
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
