TDOA measurements at 103400 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 4106 | 2019-04-20T21-37-58_102500000_pankrac | 2019-04-20T21-37-58_102500000_luna |
|---|
| gain | [9, 9, 9, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -46.277 stddev = 0.011 reference, 9.522 target [samples]; known correct: -49.049 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_luna (pass 1)
reference error = 0.272585 ppm, target error = 0.080905 ppm
Measured dist: -47.720771 target fitness: 1.652096 stddevs: 9.754957 target, 0.075190 reference
gold result: -49.049125
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_luna (pass 2)
snr: 14.0 12.4 dB
reference error = 0.000070 ppm, target error = 0.013057 ppm
Measured dist: -46.276667 target fitness: 1.655453 stddevs: 9.521530 target, 0.011476 reference
gold result: -49.049125
| correlation 4107 | 2019-04-20T21-37-58_102500000_pankrac | 2019-04-20T21-37-58_102500000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 4.138 stddev = 0.006 reference, 13.590 target [samples]; known correct: 0.877 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brmlab (pass 1)
reference error = -0.389034 ppm, target error = 0.053608 ppm
Measured dist: -0.636313 target fitness: 1.987577 stddevs: 14.048176 target, 0.106779 reference
gold result: 0.876883
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brmlab (pass 2)
snr: 14.0 12.1 dB
reference error = 0.016002 ppm, target error = 0.052810 ppm
Measured dist: 4.137914 target fitness: 1.976148 stddevs: 13.589764 target, 0.006147 reference
gold result: 0.876883
| correlation 4108 | 2019-04-20T21-37-58_102500000_pankrac | 2019-04-20T21-37-58_102500000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -58.599 stddev = 0.004 reference, 5.818 target [samples]; known correct: -58.566 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brevnov (pass 1)
reference error = -0.019473 ppm, target error = 0.051110 ppm
Measured dist: -58.621831 target fitness: 1.704034 stddevs: 5.800310 target, 0.006722 reference
gold result: -58.565514
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 14.0 32.7 dB
reference error = 0.001120 ppm, target error = 0.067744 ppm
Measured dist: -58.598516 target fitness: 1.706030 stddevs: 5.818260 target, 0.004218 reference
gold result: -58.565514
| correlation 4109 | 2019-04-20T21-37-58_102500000_luna | 2019-04-20T21-37-58_102500000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 48.534 stddev = 0.018 reference, 13.088 target [samples]; known correct: 49.926 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brmlab (pass 1)
reference error = -0.673631 ppm, target error = -0.064404 ppm
Measured dist: 47.226231 target fitness: 1.783003 stddevs: 14.641815 target, 0.185886 reference
gold result: 49.926007
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brmlab (pass 2)
snr: 12.5 12.9 dB
reference error = 0.033273 ppm, target error = 0.084258 ppm
Measured dist: 48.534392 target fitness: 1.814890 stddevs: 13.088160 target, 0.018058 reference
gold result: 49.926007
| correlation 4110 | 2019-04-20T21-37-58_102500000_luna | 2019-04-20T21-37-58_102500000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -11.264 stddev = 0.012 reference, 2.714 target [samples]; known correct: -9.516 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brevnov (pass 1)
reference error = -0.294410 ppm, target error = -0.022991 ppm
Measured dist: -11.947332 target fitness: 1.526049 stddevs: 4.121751 target, 0.082402 reference
gold result: -9.516389
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 12.4 32.7 dB
reference error = 0.003739 ppm, target error = 0.033890 ppm
Measured dist: -11.263598 target fitness: 1.518787 stddevs: 2.713911 target, 0.011505 reference
gold result: -9.516389
| correlation 4111 | 2019-04-20T21-37-58_102500000_brmlab | 2019-04-20T21-37-58_102500000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -54.758 stddev = 0.004 reference, 8.818 target [samples]; known correct: -59.442 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_brmlab <--> 2019-04-20T21-37-58_102500000_brevnov (pass 1)
reference error = 0.346950 ppm, target error = -0.004751 ppm
Measured dist: -53.995434 target fitness: 1.762204 stddevs: 9.432095 target, 0.095618 reference
gold result: -59.442397
2019-04-20T21-37-58_102500000_brmlab <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 12.3 32.7 dB
reference error = 0.008179 ppm, target error = -0.086342 ppm
Measured dist: -54.757838 target fitness: 1.764129 stddevs: 8.818008 target, 0.004362 reference
gold result: -59.442397
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
