TDOA measurements at 91900 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 4160 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 21.534 stddev = 0.005 reference, 0.541 target [samples]; known correct: 29.106 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brmlab (pass 1)
reference error = 0.494329 ppm, target error = 0.031104 ppm
Measured dist: 21.583086 target fitness: 1.175177 stddevs: 5.208672 target, 0.136242 reference
gold result: 29.106471
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brmlab (pass 2)
snr: 45.0 51.9 dB
reference error = -0.010300 ppm, target error = 0.074044 ppm
Measured dist: 21.533655 target fitness: 1.177199 stddevs: 0.540606 target, 0.004919 reference
gold result: 29.106471
| correlation 4161 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -41.135 stddev = 0.004 reference, 1.038 target [samples]; known correct: -37.247 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brevnov (pass 1)
reference error = -0.064207 ppm, target error = -0.022643 ppm
Measured dist: -41.235445 target fitness: 1.177398 stddevs: 1.353194 target, 0.017912 reference
gold result: -37.247119
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brevnov (pass 2)
snr: 44.9 49.0 dB
reference error = 0.002640 ppm, target error = 0.039802 ppm
Measured dist: -41.135106 target fitness: 1.175744 stddevs: 1.038260 target, 0.004137 reference
gold result: -37.247119
| correlation 4162 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [7, 7, 7, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 10.257 stddev = 0.008 reference, 0.743 target [samples]; known correct: 17.803 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = 0.239939 ppm, target error = 0.118679 ppm
Measured dist: 10.866619 target fitness: 1.169976 stddevs: 2.642740 target, 0.064607 reference
gold result: 17.802583
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 44.9 38.2 dB
reference error = -0.003852 ppm, target error = 0.003870 ppm
Measured dist: 10.257061 target fitness: 1.171424 stddevs: 0.742527 target, 0.008031 reference
gold result: 17.802583
| correlation 4163 | 2019-04-20T22-03-17_91200000_brmlab | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -62.248 stddev = 0.004 reference, 1.211 target [samples]; known correct: -66.354 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_brevnov (pass 1)
reference error = -0.515278 ppm, target error = 0.030673 ppm
Measured dist: -62.037605 target fitness: 1.179841 stddevs: 6.179159 target, 0.140989 reference
gold result: -66.353590
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_brevnov (pass 2)
snr: 51.9 49.0 dB
reference error = -0.009816 ppm, target error = 0.090296 ppm
Measured dist: -62.247687 target fitness: 1.209689 stddevs: 1.210880 target, 0.003988 reference
gold result: -66.353590
| correlation 4164 | 2019-04-20T22-03-17_91200000_brmlab | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [4, 4, 4, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -11.326 stddev = 0.009 reference, 0.601 target [samples]; known correct: -11.304 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = -0.250205 ppm, target error = -0.112004 ppm
Measured dist: -11.685816 target fitness: 1.183215 stddevs: 2.446103 target, 0.068289 reference
gold result: -11.303888
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 51.9 38.2 dB
reference error = 0.003478 ppm, target error = 0.005281 ppm
Measured dist: -11.326168 target fitness: 1.184323 stddevs: 0.601442 target, 0.008844 reference
gold result: -11.303888
| correlation 4165 | 2019-04-20T22-03-17_91200000_brevnov | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [4, 4, 4, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 50.912 stddev = 0.008 reference, 1.333 target [samples]; known correct: 55.050 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T22-03-17_91200000_brevnov <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = 0.311371 ppm, target error = 0.036010 ppm
Measured dist: 51.329871 target fitness: 1.174260 stddevs: 3.661040 target, 0.083568 reference
gold result: 55.049702
2019-04-20T22-03-17_91200000_brevnov <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 49.0 38.2 dB
reference error = -0.009484 ppm, target error = -0.145147 ppm
Measured dist: 50.911515 target fitness: 1.181780 stddevs: 1.332867 target, 0.008113 reference
gold result: 55.049702
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
