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 4148 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_brmlab |
|---|
| 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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 24.542 stddev = 0.005 reference, 1.400 target [samples]; known correct: 27.728 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brmlab (pass 1)
reference error = 0.494329 ppm, target error = 0.049784 ppm
Measured dist: 24.585191 target fitness: 1.630433 stddevs: 4.591365 target, 0.136242 reference
gold result: 27.728272
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brmlab (pass 2)
snr: 40.4 51.9 dB
reference error = -0.010300 ppm, target error = 0.006967 ppm
Measured dist: 24.542496 target fitness: 1.642635 stddevs: 1.400187 target, 0.004919 reference
gold result: 27.728272
| correlation 4149 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -43.124 stddev = 0.004 reference, 1.598 target [samples]; known correct: -38.660 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brevnov (pass 1)
reference error = -0.064207 ppm, target error = 0.050841 ppm
Measured dist: -42.520871 target fitness: 1.660394 stddevs: 1.695901 target, 0.017912 reference
gold result: -38.660396
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brevnov (pass 2)
snr: 40.4 46.0 dB
reference error = 0.002758 ppm, target error = -0.032005 ppm
Measured dist: -43.123799 target fitness: 1.661706 stddevs: 1.597663 target, 0.004139 reference
gold result: -38.660396
| correlation 4150 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 11.467 stddev = 0.008 reference, 1.208 target [samples]; known correct: 15.836 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = 0.239939 ppm, target error = 0.042687 ppm
Measured dist: 11.909212 target fitness: 1.647487 stddevs: 2.467432 target, 0.064607 reference
gold result: 15.836457
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 40.3 35.5 dB
reference error = -0.003839 ppm, target error = -0.112543 ppm
Measured dist: 11.466577 target fitness: 1.648875 stddevs: 1.207805 target, 0.007995 reference
gold result: 15.836457
| correlation 4151 | 2019-04-20T22-03-17_91200000_brmlab | 2019-04-20T22-03-17_91200000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -67.260 stddev = 0.004 reference, 1.237 target [samples]; known correct: -66.389 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_brevnov (pass 1)
reference error = -0.515278 ppm, target error = 0.018614 ppm
Measured dist: -66.873542 target fitness: 1.753954 stddevs: 4.902903 target, 0.140989 reference
gold result: -66.388668
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_brevnov (pass 2)
snr: 51.9 46.0 dB
reference error = -0.009816 ppm, target error = -0.011712 ppm
Measured dist: -67.259972 target fitness: 1.777986 stddevs: 1.237203 target, 0.003988 reference
gold result: -66.388668
| correlation 4152 | 2019-04-20T22-03-17_91200000_brmlab | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [4, 4, 4, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -13.586 stddev = 0.009 reference, 0.575 target [samples]; known correct: -11.892 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = -0.250205 ppm, target error = -0.015372 ppm
Measured dist: -12.782682 target fitness: 1.655294 stddevs: 2.163826 target, 0.068289 reference
gold result: -11.891815
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 51.8 35.5 dB
reference error = 0.003478 ppm, target error = 0.021355 ppm
Measured dist: -13.586013 target fitness: 1.657535 stddevs: 0.574571 target, 0.008844 reference
gold result: -11.891815
| correlation 4153 | 2019-04-20T22-03-17_91200000_brevnov | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [4, 4, 4, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 54.579 stddev = 0.008 reference, 1.165 target [samples]; known correct: 54.497 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-03-17_91200000_brevnov <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = 0.311371 ppm, target error = 0.057521 ppm
Measured dist: 54.292651 target fitness: 1.662931 stddevs: 2.835415 target, 0.083568 reference
gold result: 54.496853
2019-04-20T22-03-17_91200000_brevnov <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 46.0 35.5 dB
reference error = -0.009484 ppm, target error = 0.014928 ppm
Measured dist: 54.579233 target fitness: 1.673245 stddevs: 1.165249 target, 0.008113 reference
gold result: 54.496853
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
