TDOA measurements at 90300 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 3902 | 2019-04-20T20-30-01_89500000_pankrac | 2019-04-20T20-30-01_89500000_luna |
|---|
| gain | [15, 15, 15, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 11.416 stddev = 0.013 reference, 1.426 target [samples]; known correct: 15.836 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_luna (pass 1)
reference error = 0.309667 ppm, target error = 0.114315 ppm
Measured dist: 11.871299 target fitness: 1.541444 stddevs: 2.074632 target, 0.085694 reference
gold result: 15.836457
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_luna (pass 2)
snr: 28.7 35.4 dB
reference error = 0.009828 ppm, target error = -0.026046 ppm
Measured dist: 11.415959 target fitness: 1.541792 stddevs: 1.425919 target, 0.012507 reference
gold result: 15.836457
| correlation 3903 | 2019-04-20T20-30-01_89500000_pankrac | 2019-04-20T20-30-01_89500000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 25.250 stddev = 0.008 reference, 1.512 target [samples]; known correct: 27.728 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brmlab (pass 1)
reference error = 0.511788 ppm, target error = 0.089814 ppm
Measured dist: 25.272675 target fitness: 1.529792 stddevs: 3.221874 target, 0.140529 reference
gold result: 27.728272
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brmlab (pass 2)
snr: 28.7 50.8 dB
reference error = 0.025028 ppm, target error = 0.016428 ppm
Measured dist: 25.249903 target fitness: 1.529589 stddevs: 1.512399 target, 0.008055 reference
gold result: 27.728272
| correlation 3904 | 2019-04-20T20-30-01_89500000_pankrac | 2019-04-20T20-30-01_89500000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -41.777 stddev = 0.004 reference, 1.696 target [samples]; known correct: -38.660 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brevnov (pass 1)
reference error = -0.072222 ppm, target error = -0.066906 ppm
Measured dist: -41.869770 target fitness: 1.561625 stddevs: 1.725710 target, 0.020421 reference
gold result: -38.660396
2019-04-20T20-30-01_89500000_pankrac <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 28.7 49.6 dB
reference error = -0.000373 ppm, target error = -0.038058 ppm
Measured dist: -41.777169 target fitness: 1.564382 stddevs: 1.695956 target, 0.003943 reference
gold result: -38.660396
| correlation 3905 | 2019-04-20T20-30-01_89500000_luna | 2019-04-20T20-30-01_89500000_brmlab |
|---|
| gain | [10, 10, 10, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 13.748 stddev = 0.007 reference, 0.452 target [samples]; known correct: 11.892 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brmlab (pass 1)
reference error = 0.206747 ppm, target error = 0.119833 ppm
Measured dist: 13.555718 target fitness: 1.546487 stddevs: 1.261782 target, 0.058455 reference
gold result: 11.891815
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brmlab (pass 2)
snr: 35.4 51.3 dB
reference error = -0.000106 ppm, target error = 0.039267 ppm
Measured dist: 13.748286 target fitness: 1.546247 stddevs: 0.452187 target, 0.006569 reference
gold result: 11.891815
| correlation 3906 | 2019-04-20T20-30-01_89500000_luna | 2019-04-20T20-30-01_89500000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -54.130 stddev = 0.011 reference, 1.074 target [samples]; known correct: -54.497 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brevnov (pass 1)
reference error = -0.400323 ppm, target error = -0.123464 ppm
Measured dist: -54.730934 target fitness: 1.600589 stddevs: 2.138543 target, 0.110026 reference
gold result: -54.496853
2019-04-20T20-30-01_89500000_luna <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 35.4 49.7 dB
reference error = 0.013336 ppm, target error = -0.085578 ppm
Measured dist: -54.129954 target fitness: 1.614464 stddevs: 1.073654 target, 0.011024 reference
gold result: -54.496853
| correlation 3907 | 2019-04-20T20-30-01_89500000_brmlab | 2019-04-20T20-30-01_89500000_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 | 89500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -67.423 stddev = 0.008 reference, 1.059 target [samples]; known correct: -66.389 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T20-30-01_89500000_brmlab <--> 2019-04-20T20-30-01_89500000_brevnov (pass 1)
reference error = -0.576965 ppm, target error = -0.108402 ppm
Measured dist: -67.245854 target fitness: 1.632941 stddevs: 3.305951 target, 0.157843 reference
gold result: -66.388668
2019-04-20T20-30-01_89500000_brmlab <--> 2019-04-20T20-30-01_89500000_brevnov (pass 2)
snr: 50.9 49.7 dB
reference error = -0.026730 ppm, target error = -0.188316 ppm
Measured dist: -67.422654 target fitness: 1.649565 stddevs: 1.059202 target, 0.008304 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
