TDOA measurements at 98700 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 4202 | 2019-04-20T22-19-43_98100000_pankrac | 2019-04-20T22-19-43_98100000_luna |
|---|
| gain | [6, 6, 6, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 55.229 stddev = 0.010 reference, 45.898 target [samples]; known correct: 52.216 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_luna (pass 1)
reference error = 0.270398 ppm, target error = 0.319420 ppm
Measured dist: 55.192731 target fitness: 1.110093 stddevs: 59.361912 target, 0.073235 reference
gold result: 52.216497
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_luna (pass 2)
snr: 52.3 37.5 dB
reference error = -0.007608 ppm, target error = 0.000000 ppm
Measured dist: 55.229320 target fitness: 1.110028 stddevs: 45.897659 target, 0.010308 reference
gold result: 52.216497
| correlation 4203 | 2019-04-20T22-19-43_98100000_pankrac | 2019-04-20T22-19-43_98100000_brmlab |
|---|
| gain | [6, 6, 6, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 48.485 stddev = 0.005 reference, 46.809 target [samples]; known correct: 45.570 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
 |
Correlator log
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brmlab (pass 1)
reference error = 0.524290 ppm, target error = 0.437896 ppm
Measured dist: 48.880470 target fitness: 1.103031 stddevs: 59.384445 target, 0.144168 reference
gold result: 45.570215
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brmlab (pass 2)
snr: 52.3 49.6 dB
reference error = -0.003270 ppm, target error = -0.001993 ppm
Measured dist: 48.484790 target fitness: 1.103184 stddevs: 46.808662 target, 0.004659 reference
gold result: 45.570215
| correlation 4204 | 2019-04-20T22-19-43_98100000_pankrac | 2019-04-20T22-19-43_98100000_brevnov |
|---|
| gain | [6, 6, 6, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 121.426 stddev = 0.004 reference, 92.741 target [samples]; known correct: 33.653 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brevnov (pass 1)
reference error = -0.012509 ppm, target error = -0.025794 ppm
Measured dist: 121.440181 target fitness: 1.045127 stddevs: 91.723160 target, 0.005683 reference
gold result: 33.653139
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 52.3 33.3 dB
reference error = 0.001570 ppm, target error = -0.007000 ppm
Measured dist: 121.425531 target fitness: 1.045125 stddevs: 92.740906 target, 0.004310 reference
gold result: 33.653139
| correlation 4205 | 2019-04-20T22-19-43_98100000_luna | 2019-04-20T22-19-43_98100000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -6.048 stddev = 0.011 reference, 54.168 target [samples]; known correct: -6.646 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brmlab (pass 1)
reference error = 0.261198 ppm, target error = 0.333802 ppm
Measured dist: 112.326290 target fitness: 1.090664 stddevs: 75.871811 target, 0.071497 reference
gold result: -6.646282
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brmlab (pass 2)
snr: 37.5 49.6 dB
reference error = -0.001151 ppm, target error = -0.171766 ppm
Measured dist: -6.047760 target fitness: 1.090572 stddevs: 54.167942 target, 0.011284 reference
gold result: -6.646282
| correlation 4206 | 2019-04-20T22-19-43_98100000_luna | 2019-04-20T22-19-43_98100000_brevnov |
|---|
| 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 | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 65.351 stddev = 0.009 reference, 58.572 target [samples]; known correct: -18.563 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brevnov (pass 1)
reference error = -0.283950 ppm, target error = -0.130065 ppm
Measured dist: -54.215795 target fitness: 1.043969 stddevs: 60.268539 target, 0.076937 reference
gold result: -18.563359
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 37.5 33.3 dB
reference error = 0.006861 ppm, target error = -0.011578 ppm
Measured dist: 65.351433 target fitness: 1.043892 stddevs: 58.572178 target, 0.009201 reference
gold result: -18.563359
| correlation 4207 | 2019-04-20T22-19-43_98100000_brmlab | 2019-04-20T22-19-43_98100000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -49.986 stddev = 0.010 reference, 59.263 target [samples]; known correct: -11.917 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-19-43_98100000_brmlab <--> 2019-04-20T22-19-43_98100000_brevnov (pass 1)
reference error = -0.500211 ppm, target error = -0.113418 ppm
Measured dist: -52.061833 target fitness: 1.041931 stddevs: 61.789680 target, 0.138398 reference
gold result: -11.917077
2019-04-20T22-19-43_98100000_brmlab <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 49.6 33.4 dB
reference error = -0.032231 ppm, target error = -0.025213 ppm
Measured dist: -49.985975 target fitness: 1.041861 stddevs: 59.262581 target, 0.009881 reference
gold result: -11.917077
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
