TDOA measurements at 89000 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 3884 | 2019-04-20T20-22-37_88200000_pankrac | 2019-04-20T20-22-37_88200000_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 | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -14.211 stddev = 0.006 reference, 0.555 target [samples]; known correct: -15.380 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_brmlab (pass 1)
reference error = -0.391468 ppm, target error = -0.076386 ppm
Measured dist: -14.401732 target fitness: 2.038569 stddevs: 2.377443 target, 0.106856 reference
gold result: -15.379956
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_brmlab (pass 2)
snr: 28.7 57.4 dB
reference error = 0.018132 ppm, target error = -0.030160 ppm
Measured dist: -14.211220 target fitness: 2.043025 stddevs: 0.555270 target, 0.006459 reference
gold result: -15.379956
| correlation 3885 | 2019-04-20T20-22-37_88200000_pankrac | 2019-04-20T20-22-37_88200000_luna |
|---|
| gain | [7, 7, 7, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -9.452 stddev = 0.017 reference, 2.070 target [samples]; known correct: -11.302 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_luna (pass 1)
reference error = 0.264762 ppm, target error = 0.000105 ppm
Measured dist: -8.838713 target fitness: 1.977210 stddevs: 2.788153 target, 0.074417 reference
gold result: -11.301848
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_luna (pass 2)
snr: 28.6 10.9 dB
reference error = 0.033944 ppm, target error = -0.004933 ppm
Measured dist: -9.451664 target fitness: 1.980950 stddevs: 2.070252 target, 0.017035 reference
gold result: -11.301848
| correlation 3886 | 2019-04-20T20-22-37_88200000_pankrac | 2019-04-20T20-22-37_88200000_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 | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 14.801 stddev = 0.005 reference, 1.657 target [samples]; known correct: 2.314 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_brevnov (pass 1)
reference error = -0.102369 ppm, target error = -0.054473 ppm
Measured dist: 14.641523 target fitness: 1.878740 stddevs: 1.808516 target, 0.028258 reference
gold result: 2.314336
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_brevnov (pass 2)
snr: 28.6 33.7 dB
reference error = 0.006613 ppm, target error = 0.008702 ppm
Measured dist: 14.800829 target fitness: 1.880211 stddevs: 1.656911 target, 0.004534 reference
gold result: 2.314336
| correlation 3887 | 2019-04-20T20-22-37_88200000_brmlab | 2019-04-20T20-22-37_88200000_luna |
|---|
| gain | [4, 4, 4, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 4.107 stddev = 0.015 reference, 1.981 target [samples]; known correct: 4.078 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_brmlab <--> 2019-04-20T20-22-37_88200000_luna (pass 1)
reference error = 0.692645 ppm, target error = 0.030528 ppm
Measured dist: 8.381273 target fitness: 1.975285 stddevs: 4.835968 target, 0.191139 reference
gold result: 4.078108
2019-04-20T20-22-37_88200000_brmlab <--> 2019-04-20T20-22-37_88200000_luna (pass 2)
snr: 56.5 10.9 dB
reference error = -0.022421 ppm, target error = 0.045168 ppm
Measured dist: 4.107049 target fitness: 1.983728 stddevs: 1.980546 target, 0.015000 reference
gold result: 4.078108
| correlation 3888 | 2019-04-20T20-22-37_88200000_brmlab | 2019-04-20T20-22-37_88200000_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 | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 28.026 stddev = 0.007 reference, 1.715 target [samples]; known correct: 17.694 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_brmlab <--> 2019-04-20T20-22-37_88200000_brevnov (pass 1)
reference error = 0.263281 ppm, target error = 0.026905 ppm
Measured dist: 27.939753 target fitness: 1.892176 stddevs: 2.643925 target, 0.072317 reference
gold result: 17.694292
2019-04-20T20-22-37_88200000_brmlab <--> 2019-04-20T20-22-37_88200000_brevnov (pass 2)
snr: 57.2 33.7 dB
reference error = 0.018931 ppm, target error = 0.077832 ppm
Measured dist: 28.025531 target fitness: 1.897721 stddevs: 1.715474 target, 0.006622 reference
gold result: 17.694292
| correlation 3889 | 2019-04-20T20-22-37_88200000_luna | 2019-04-20T20-22-37_88200000_brevnov |
|---|
| gain | [11, 11, 11, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 26.303 stddev = 0.015 reference, 3.597 target [samples]; known correct: 13.616 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_luna <--> 2019-04-20T20-22-37_88200000_brevnov (pass 1)
reference error = -0.415260 ppm, target error = -0.026803 ppm
Measured dist: 24.519185 target fitness: 1.826526 stddevs: 4.874343 target, 0.114608 reference
gold result: 13.616184
2019-04-20T20-22-37_88200000_luna <--> 2019-04-20T20-22-37_88200000_brevnov (pass 2)
snr: 10.9 33.6 dB
reference error = 0.022660 ppm, target error = 0.049795 ppm
Measured dist: 26.303428 target fitness: 1.829335 stddevs: 3.596962 target, 0.014713 reference
gold result: 13.616184
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
