TDOA measurements at 102900 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 4100 | 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 | 32.939 stddev = 0.011 reference, 0.488 target [samples]; known correct: 34.954 |
| 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 = 0.107064 ppm
Measured dist: 33.220107 target fitness: 1.596301 stddevs: 1.697719 target, 0.075190 reference
gold result: 34.954401
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_luna (pass 2)
snr: 31.4 25.9 dB
reference error = 0.000109 ppm, target error = 0.079336 ppm
Measured dist: 32.939062 target fitness: 1.597565 stddevs: 0.488263 target, 0.011487 reference
gold result: 34.954401
| correlation 4101 | 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 | 38.164 stddev = 0.006 reference, 0.548 target [samples]; known correct: 41.884 |
| 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 = -0.024753 ppm
Measured dist: 38.507718 target fitness: 1.619747 stddevs: 2.329582 target, 0.106779 reference
gold result: 41.883851
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brmlab (pass 2)
snr: 31.4 25.5 dB
reference error = 0.016002 ppm, target error = 0.104784 ppm
Measured dist: 38.163722 target fitness: 1.620471 stddevs: 0.548300 target, 0.006147 reference
gold result: 41.883851
| correlation 4102 | 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 | -25.551 stddev = 0.004 reference, 5.150 target [samples]; known correct: -23.634 |
| 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 = -0.040857 ppm
Measured dist: -25.588505 target fitness: 1.352651 stddevs: 5.194921 target, 0.006722 reference
gold result: -23.634450
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 31.4 25.4 dB
reference error = 0.001120 ppm, target error = -0.046757 ppm
Measured dist: -25.551209 target fitness: 1.352278 stddevs: 5.150476 target, 0.004218 reference
gold result: -23.634450
| correlation 4103 | 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 | 5.324 stddev = 0.018 reference, 0.429 target [samples]; known correct: 6.929 |
| 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 = 0.064914 ppm
Measured dist: 7.271969 target fitness: 1.590333 stddevs: 3.826264 target, 0.185886 reference
gold result: 6.929450
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brmlab (pass 2)
snr: 25.9 25.5 dB
reference error = 0.033273 ppm, target error = 0.020939 ppm
Measured dist: 5.324304 target fitness: 1.589105 stddevs: 0.429006 target, 0.018058 reference
gold result: 6.929450
| correlation 4104 | 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 | -59.314 stddev = 0.012 reference, 5.134 target [samples]; known correct: -58.589 |
| 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 = -0.077083 ppm
Measured dist: -59.867908 target fitness: 1.389353 stddevs: 5.864526 target, 0.082402 reference
gold result: -58.588851
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 25.9 25.4 dB
reference error = 0.003739 ppm, target error = -0.043275 ppm
Measured dist: -59.314058 target fitness: 1.374580 stddevs: 5.134098 target, 0.011505 reference
gold result: -58.588851
| correlation 4105 | 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 | -64.693 stddev = 0.004 reference, 5.021 target [samples]; known correct: -65.518 |
| 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 = 0.003130 ppm
Measured dist: -64.212387 target fitness: 1.388666 stddevs: 7.775423 target, 0.095618 reference
gold result: -65.518301
2019-04-20T21-37-58_102500000_brmlab <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 25.5 25.4 dB
reference error = 0.008179 ppm, target error = -0.065294 ppm
Measured dist: -64.693347 target fitness: 1.390795 stddevs: 5.020628 target, 0.004362 reference
gold result: -65.518301
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
