TDOA measurements at 90300 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 3914 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_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 | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 11.821 stddev = 0.010 reference, 1.273 target [samples]; known correct: 15.836 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_luna (pass 1)
reference error = 0.276693 ppm, target error = -0.005399 ppm
Measured dist: 12.350160 target fitness: 1.812628 stddevs: 2.405916 target, 0.076385 reference
gold result: 15.836457
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_luna (pass 2)
snr: 47.2 35.2 dB
reference error = -0.009229 ppm, target error = 0.036253 ppm
Measured dist: 11.821350 target fitness: 1.813297 stddevs: 1.273337 target, 0.010322 reference
gold result: 15.836457
| correlation 3915 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_brmlab |
|---|
| gain | [7, 7, 7, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 25.276 stddev = 0.007 reference, 1.437 target [samples]; known correct: 27.728 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brmlab (pass 1)
reference error = -0.409695 ppm, target error = -0.037311 ppm
Measured dist: 25.536506 target fitness: 1.828272 stddevs: 3.439115 target, 0.112154 reference
gold result: 27.728272
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brmlab (pass 2)
snr: 47.2 50.5 dB
reference error = 0.020201 ppm, target error = 0.031766 ppm
Measured dist: 25.275870 target fitness: 1.830626 stddevs: 1.437316 target, 0.007039 reference
gold result: 27.728272
| correlation 3916 | 2019-04-20T20-35-49_90300000_pankrac | 2019-04-20T20-35-49_90300000_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 | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -42.492 stddev = 0.004 reference, 1.440 target [samples]; known correct: -38.660 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = -0.109846 ppm, target error = -0.017498 ppm
Measured dist: -42.684462 target fitness: 1.806445 stddevs: 1.685521 target, 0.029987 reference
gold result: -38.660396
2019-04-20T20-35-49_90300000_pankrac <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 47.1 49.6 dB
reference error = 0.001968 ppm, target error = -0.026110 ppm
Measured dist: -42.492146 target fitness: 1.807297 stddevs: 1.440086 target, 0.004130 reference
gold result: -38.660396
| correlation 3917 | 2019-04-20T20-35-49_90300000_luna | 2019-04-20T20-35-49_90300000_brmlab |
|---|
| 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 | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 13.326 stddev = 0.016 reference, 0.468 target [samples]; known correct: 11.892 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brmlab (pass 1)
reference error = -0.688082 ppm, target error = -0.001405 ppm
Measured dist: 14.120247 target fitness: 1.808383 stddevs: 5.069579 target, 0.187831 reference
gold result: 11.891815
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brmlab (pass 2)
snr: 35.2 49.9 dB
reference error = 0.038105 ppm, target error = 0.012961 ppm
Measured dist: 13.326450 target fitness: 1.821183 stddevs: 0.468097 target, 0.016467 reference
gold result: 11.891815
| correlation 3918 | 2019-04-20T20-35-49_90300000_luna | 2019-04-20T20-35-49_90300000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -54.550 stddev = 0.012 reference, 1.072 target [samples]; known correct: -54.497 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = -0.347548 ppm, target error = -0.075218 ppm
Measured dist: -55.147993 target fitness: 1.834660 stddevs: 2.993006 target, 0.096254 reference
gold result: -54.496853
2019-04-20T20-35-49_90300000_luna <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 35.2 49.5 dB
reference error = -0.025425 ppm, target error = -0.125286 ppm
Measured dist: -54.549724 target fitness: 1.857008 stddevs: 1.072486 target, 0.011776 reference
gold result: -54.496853
| correlation 3919 | 2019-04-20T20-35-49_90300000_brmlab | 2019-04-20T20-35-49_90300000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 90300000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -67.796 stddev = 0.005 reference, 1.005 target [samples]; known correct: -66.389 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-35-49_90300000_brmlab <--> 2019-04-20T20-35-49_90300000_brevnov (pass 1)
reference error = 0.293922 ppm, target error = -0.012118 ppm
Measured dist: -68.173298 target fitness: 1.947041 stddevs: 2.319447 target, 0.080124 reference
gold result: -66.388668
2019-04-20T20-35-49_90300000_brmlab <--> 2019-04-20T20-35-49_90300000_brevnov (pass 2)
snr: 50.2 49.6 dB
reference error = -0.009567 ppm, target error = -0.073213 ppm
Measured dist: -67.796359 target fitness: 1.941594 stddevs: 1.005127 target, 0.004801 reference
gold result: -66.388668
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
