TDOA measurements at 92300 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 3944 | 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 | 11.295 stddev = 0.014 reference, 1.079 target [samples]; known correct: 8.605 |
| 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 = 0.061603 ppm
Measured dist: 10.941287 target fitness: 1.503824 stddevs: 2.438527 target, 0.074292 reference
gold result: 8.604617
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_luna (pass 2)
snr: 12.1 22.1 dB
reference error = 0.023044 ppm, target error = 0.008011 ppm
Measured dist: 11.295248 target fitness: 1.502782 stddevs: 1.078510 target, 0.013539 reference
gold result: 8.604617
| correlation 3945 | 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 | 36.993 stddev = 0.004 reference, 1.143 target [samples]; known correct: 33.272 |
| 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_brmlab (pass 1)
reference error = 0.528357 ppm, target error = 0.123990 ppm
Measured dist: 36.396562 target fitness: 1.546175 stddevs: 4.354235 target, 0.144732 reference
gold result: 33.272033
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brmlab (pass 2)
snr: 12.1 22.0 dB
reference error = 0.001418 ppm, target error = 0.018734 ppm
Measured dist: 36.992659 target fitness: 1.573915 stddevs: 1.143098 target, 0.004473 reference
gold result: 33.272033
| correlation 3946 | 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 | -47.410 stddev = 0.004 reference, 1.663 target [samples]; known correct: -50.027 |
| 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 = -0.016358 ppm
Measured dist: -47.517560 target fitness: 1.560146 stddevs: 1.817089 target, 0.022813 reference
gold result: -50.026627
2019-04-20T20-43-12_91900000_pankrac <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 12.1 28.0 dB
reference error = 0.001604 ppm, target error = 0.025190 ppm
Measured dist: -47.410448 target fitness: 1.556387 stddevs: 1.662721 target, 0.003870 reference
gold result: -50.026627
| correlation 3947 | 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 | 25.763 stddev = 0.014 reference, 0.468 target [samples]; known correct: 24.667 |
| 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 = 0.229924 ppm, target error = 0.058449 ppm
Measured dist: 26.441888 target fitness: 1.515204 stddevs: 2.132343 target, 0.062255 reference
gold result: 24.667416
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brmlab (pass 2)
snr: 22.1 22.6 dB
reference error = -0.007423 ppm, target error = 0.039689 ppm
Measured dist: 25.762545 target fitness: 1.505602 stddevs: 0.467713 target, 0.013574 reference
gold result: 24.667416
| correlation 3948 | 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 | -58.674 stddev = 0.012 reference, 1.104 target [samples]; known correct: -58.631 |
| 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 = -0.136904 ppm
Measured dist: -59.193948 target fitness: 1.597549 stddevs: 3.241791 target, 0.098730 reference
gold result: -58.631245
2019-04-20T20-43-12_91900000_luna <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 22.2 27.9 dB
reference error = -0.005762 ppm, target error = 0.012666 ppm
Measured dist: -58.674027 target fitness: 1.581220 stddevs: 1.104265 target, 0.011762 reference
gold result: -58.631245
| correlation 3949 | 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 | -84.433 stddev = 0.005 reference, 1.078 target [samples]; known correct: -83.299 |
| 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 = -0.158559 ppm
Measured dist: -84.578021 target fitness: 1.647650 stddevs: 5.327204 target, 0.170797 reference
gold result: -83.298661
2019-04-20T20-43-12_91900000_brmlab <--> 2019-04-20T20-43-12_91900000_brevnov (pass 2)
snr: 22.4 28.0 dB
reference error = 0.013523 ppm, target error = 0.015441 ppm
Measured dist: -84.433315 target fitness: 1.722749 stddevs: 1.078144 target, 0.005351 reference
gold result: -83.298661
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
