TDOA measurements at 94600 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 4166 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_luna |
|---|
| gain | [8, 8, 8, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -2.007 stddev = 0.008 reference, 0.413 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_luna (pass 1)
reference error = 0.271743 ppm, target error = 0.108220 ppm
Measured dist: -4.712758 target fitness: 1.298401 stddevs: 3.446169 target, 0.072011 reference
gold result: -0.000000
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_luna (pass 2)
snr: 39.3 34.7 dB
reference error = -0.008705 ppm, target error = 0.017191 ppm
Measured dist: -2.006884 target fitness: 1.297102 stddevs: 0.412990 target, 0.007580 reference
gold result: -0.000000
| correlation 4167 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 0.957 stddev = 0.004 reference, 0.593 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brevnov (pass 1)
reference error = -0.009204 ppm, target error = -0.033169 ppm
Measured dist: 0.972545 target fitness: 1.288051 stddevs: 0.627022 target, 0.004489 reference
gold result: -0.000000
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brevnov (pass 2)
snr: 39.3 35.0 dB
reference error = -0.000632 ppm, target error = -0.028746 ppm
Measured dist: 0.956706 target fitness: 1.287948 stddevs: 0.592584 target, 0.004185 reference
gold result: -0.000000
| correlation 4168 | 2019-04-20T22-11-43_95300000_pankrac | 2019-04-20T22-11-43_95300000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -2.163 stddev = 0.009 reference, 0.660 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.343237 ppm, target error = -0.132901 ppm
Measured dist: 1.977943 target fitness: 1.297911 stddevs: 4.644093 target, 0.093978 reference
gold result: -0.000000
2019-04-20T22-11-43_95300000_pankrac <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 39.3 54.9 dB
reference error = -0.027331 ppm, target error = -0.116542 ppm
Measured dist: -2.162534 target fitness: 1.300539 stddevs: 0.660065 target, 0.008671 reference
gold result: -0.000000
| correlation 4169 | 2019-04-20T22-11-43_95300000_luna | 2019-04-20T22-11-43_95300000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 2.628 stddev = 0.012 reference, 1.028 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brevnov (pass 1)
reference error = -0.238407 ppm, target error = 0.011711 ppm
Measured dist: 7.055962 target fitness: 1.291159 stddevs: 3.865246 target, 0.062924 reference
gold result: -0.000000
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brevnov (pass 2)
snr: 34.7 35.0 dB
reference error = -0.039133 ppm, target error = 0.000063 ppm
Measured dist: 2.627979 target fitness: 1.291487 stddevs: 1.027685 target, 0.012283 reference
gold result: -0.000000
| correlation 4170 | 2019-04-20T22-11-43_95300000_luna | 2019-04-20T22-11-43_95300000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -0.115 stddev = 0.007 reference, 0.521 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.624331 ppm, target error = 0.152210 ppm
Measured dist: 8.826335 target fitness: 1.297182 stddevs: 8.272708 target, 0.168717 reference
gold result: -0.000000
2019-04-20T22-11-43_95300000_luna <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 34.7 54.4 dB
reference error = -0.003167 ppm, target error = -0.068272 ppm
Measured dist: -0.114650 target fitness: 1.302652 stddevs: 0.520706 target, 0.007226 reference
gold result: -0.000000
| correlation 4171 | 2019-04-20T22-11-43_95300000_brevnov | 2019-04-20T22-11-43_95300000_brmlab |
|---|
| gain | [3, 3, 3, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 95300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -2.703 stddev = 0.006 reference, 0.759 target [samples]; known correct: 0.000 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-11-43_95300000_brevnov <--> 2019-04-20T22-11-43_95300000_brmlab (pass 1)
reference error = -0.371564 ppm, target error = -0.089472 ppm
Measured dist: 1.581839 target fitness: 1.295226 stddevs: 4.629671 target, 0.100605 reference
gold result: -0.000000
2019-04-20T22-11-43_95300000_brevnov <--> 2019-04-20T22-11-43_95300000_brmlab (pass 2)
snr: 35.0 55.0 dB
reference error = 0.013626 ppm, target error = -0.007796 ppm
Measured dist: -2.703005 target fitness: 1.296223 stddevs: 0.758896 target, 0.005781 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
