TDOA measurements at 98100 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 4196 | 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 | 10.046 stddev = 0.010 reference, 1.120 target [samples]; known correct: 15.836 |
| 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 = 0.027337 ppm
Measured dist: 10.686263 target fitness: 1.540443 stddevs: 2.225955 target, 0.073235 reference
gold result: 15.836457
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_luna (pass 2)
snr: 46.9 29.3 dB
reference error = -0.007608 ppm, target error = -0.133263 ppm
Measured dist: 10.045692 target fitness: 1.544144 stddevs: 1.120014 target, 0.010308 reference
gold result: 15.836457
| correlation 4197 | 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 | 22.441 stddev = 0.005 reference, 0.730 target [samples]; known correct: 27.728 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
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 = 0.150505 ppm
Measured dist: 22.545011 target fitness: 1.526179 stddevs: 3.894892 target, 0.144168 reference
gold result: 27.728272
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brmlab (pass 2)
snr: 46.9 53.8 dB
reference error = -0.003270 ppm, target error = -0.032276 ppm
Measured dist: 22.441085 target fitness: 1.533715 stddevs: 0.730002 target, 0.004659 reference
gold result: 27.728272
| correlation 4198 | 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 | -43.367 stddev = 0.004 reference, 1.163 target [samples]; known correct: -38.660 |
| 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 = -0.012551 ppm, target error = -0.048812 ppm
Measured dist: -43.401097 target fitness: 1.570543 stddevs: 1.175147 target, 0.005713 reference
gold result: -38.660396
2019-04-20T22-19-43_98100000_pankrac <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 46.9 48.5 dB
reference error = 0.001867 ppm, target error = -0.034314 ppm
Measured dist: -43.366539 target fitness: 1.569103 stddevs: 1.162514 target, 0.004325 reference
gold result: -38.660396
| correlation 4199 | 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 | 12.954 stddev = 0.011 reference, 0.842 target [samples]; known correct: 11.892 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brmlab (pass 1)
reference error = 0.261184 ppm, target error = 0.139460 ppm
Measured dist: 12.651398 target fitness: 1.566889 stddevs: 1.845566 target, 0.071493 reference
gold result: 11.891815
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brmlab (pass 2)
snr: 29.3 53.8 dB
reference error = -0.001263 ppm, target error = 0.106535 ppm
Measured dist: 12.954447 target fitness: 1.571084 stddevs: 0.841780 target, 0.011270 reference
gold result: 11.891815
| correlation 4200 | 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 | -53.795 stddev = 0.009 reference, 1.567 target [samples]; known correct: -54.497 |
| 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 = -0.025429 ppm
Measured dist: -54.191668 target fitness: 1.663257 stddevs: 2.523325 target, 0.076937 reference
gold result: -54.496853
2019-04-20T22-19-43_98100000_luna <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 29.3 48.5 dB
reference error = 0.006861 ppm, target error = 0.063982 ppm
Measured dist: -53.794614 target fitness: 1.670550 stddevs: 1.566964 target, 0.009201 reference
gold result: -54.496853
| correlation 4201 | 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 | -65.898 stddev = 0.010 reference, 1.740 target [samples]; known correct: -66.389 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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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 = -0.169110 ppm
Measured dist: -66.075478 target fitness: 1.685813 stddevs: 4.238396 target, 0.138398 reference
gold result: -66.388668
2019-04-20T22-19-43_98100000_brmlab <--> 2019-04-20T22-19-43_98100000_brevnov (pass 2)
snr: 53.8 48.5 dB
reference error = -0.032231 ppm, target error = 0.018805 ppm
Measured dist: -65.897748 target fitness: 1.681884 stddevs: 1.739895 target, 0.009881 reference
gold result: -66.388668
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
