TDOA measurements at 102500 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 4094 | 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 | -1.101 stddev = 0.011 reference, 0.758 target [samples]; known correct: 0.000 |
| 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 = 0.052641 ppm
Measured dist: -0.850379 target fitness: 1.718153 stddevs: 1.964944 target, 0.075190 reference
gold result: -0.000000
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_luna (pass 2)
snr: 47.1 44.7 dB
reference error = 0.000070 ppm, target error = 0.002561 ppm
Measured dist: -1.100538 target fitness: 1.718865 stddevs: 0.758375 target, 0.011476 reference
gold result: -0.000000
| correlation 4095 | 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 | -3.088 stddev = 0.006 reference, 0.758 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
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 = -0.096363 ppm
Measured dist: -3.523091 target fitness: 1.751151 stddevs: 2.553471 target, 0.106779 reference
gold result: -0.000000
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brmlab (pass 2)
snr: 47.1 49.0 dB
reference error = 0.016002 ppm, target error = 0.021614 ppm
Measured dist: -3.088351 target fitness: 1.750490 stddevs: 0.758202 target, 0.006147 reference
gold result: -0.000000
| correlation 4096 | 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 | -2.595 stddev = 0.004 reference, 1.251 target [samples]; known correct: 0.000 |
| 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 = -0.019415 ppm
Measured dist: -2.608341 target fitness: 1.728632 stddevs: 1.249895 target, 0.006722 reference
gold result: -0.000000
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 47.1 54.5 dB
reference error = 0.001120 ppm, target error = -0.004235 ppm
Measured dist: -2.594788 target fitness: 1.728677 stddevs: 1.251093 target, 0.004218 reference
gold result: -0.000000
| correlation 4097 | 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 | -1.764 stddev = 0.018 reference, 0.532 target [samples]; known correct: 0.000 |
| 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 = -0.026402 ppm
Measured dist: -0.783918 target fitness: 1.722694 stddevs: 4.604733 target, 0.185886 reference
gold result: -0.000000
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brmlab (pass 2)
snr: 44.7 48.9 dB
reference error = 0.033273 ppm, target error = 0.060614 ppm
Measured dist: -1.764394 target fitness: 1.728789 stddevs: 0.532123 target, 0.018058 reference
gold result: -0.000000
| correlation 4098 | 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 | -1.187 stddev = 0.012 reference, 0.690 target [samples]; known correct: 0.000 |
| 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 = -0.012150 ppm
Measured dist: -0.939462 target fitness: 1.712304 stddevs: 2.128597 target, 0.082402 reference
gold result: -0.000000
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 44.7 54.5 dB
reference error = 0.003739 ppm, target error = -0.001068 ppm
Measured dist: -1.187149 target fitness: 1.717024 stddevs: 0.689722 target, 0.011505 reference
gold result: -0.000000
| correlation 4099 | 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 | 0.655 stddev = 0.004 reference, 0.662 target [samples]; known correct: 0.000 |
| 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 = 0.064607 ppm
Measured dist: -0.009914 target fitness: 1.734842 stddevs: 2.540826 target, 0.095618 reference
gold result: -0.000000
2019-04-20T21-37-58_102500000_brmlab <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 49.0 54.5 dB
reference error = 0.008179 ppm, target error = 0.001350 ppm
Measured dist: 0.655403 target fitness: 1.740001 stddevs: 0.662395 target, 0.004362 reference
gold result: -0.000000
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
