TDOA measurements at 107900 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 4454 | 2019-04-21T00-38-35_107900000_pankrac | 2019-04-21T00-38-35_107900000_luna |
|---|
| gain | [13, 13, 13, 1] | [14, 14, 14, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 28.564 stddev = 0.010 reference, 2.264 target [samples]; known correct: 32.304 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-21T00-38-35_107900000_pankrac <--> 2019-04-21T00-38-35_107900000_luna (pass 1)
reference error = 0.229502 ppm, target error = -0.018938 ppm
Measured dist: 27.055169 target fitness: 1.602686 stddevs: 3.498237 target, 0.063397 reference
gold result: 32.303581
2019-04-21T00-38-35_107900000_pankrac <--> 2019-04-21T00-38-35_107900000_luna (pass 2)
snr: 16.7 11.0 dB
reference error = 0.031598 ppm, target error = 0.001894 ppm
Measured dist: 28.563889 target fitness: 1.605125 stddevs: 2.263895 target, 0.010212 reference
gold result: 32.303581
| correlation 4455 | 2019-04-21T00-38-35_107900000_pankrac | 2019-04-21T00-38-35_107900000_brmlab |
|---|
| gain | [13, 13, 13, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 19.075 stddev = 0.006 reference, 1.344 target [samples]; known correct: 22.475 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-21T00-38-35_107900000_pankrac <--> 2019-04-21T00-38-35_107900000_brmlab (pass 1)
reference error = 0.508472 ppm, target error = 0.023945 ppm
Measured dist: 19.260026 target fitness: 1.617782 stddevs: 5.067711 target, 0.139432 reference
gold result: 22.474971
2019-04-21T00-38-35_107900000_pankrac <--> 2019-04-21T00-38-35_107900000_brmlab (pass 2)
snr: 16.8 36.3 dB
reference error = 0.016383 ppm, target error = 0.010761 ppm
Measured dist: 19.075435 target fitness: 1.618501 stddevs: 1.343913 target, 0.006323 reference
gold result: 22.474971
| correlation 4456 | 2019-04-21T00-38-35_107900000_pankrac | 2019-04-21T00-38-35_107900000_brevnov |
|---|
| gain | [13, 13, 13, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 27.616 stddev = 0.004 reference, 46.059 target [samples]; known correct: 33.371 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-21T00-38-35_107900000_pankrac <--> 2019-04-21T00-38-35_107900000_brevnov (pass 1)
reference error = -0.027014 ppm, target error = 0.090998 ppm
Measured dist: 27.587051 target fitness: 1.432377 stddevs: 45.985382 target, 0.008395 reference
gold result: 33.370715
2019-04-21T00-38-35_107900000_pankrac <--> 2019-04-21T00-38-35_107900000_brevnov (pass 2)
snr: 16.7 31.7 dB
reference error = 0.002383 ppm, target error = 0.159035 ppm
Measured dist: 27.616052 target fitness: 1.435171 stddevs: 46.058979 target, 0.003981 reference
gold result: 33.370715
| correlation 4457 | 2019-04-21T00-38-35_107900000_luna | 2019-04-21T00-38-35_107900000_brmlab |
|---|
| gain | [14, 14, 14, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -10.310 stddev = 0.006 reference, 1.430 target [samples]; known correct: -9.829 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-21T00-38-35_107900000_luna <--> 2019-04-21T00-38-35_107900000_brmlab (pass 1)
reference error = 0.262339 ppm, target error = 0.083901 ppm
Measured dist: -9.747093 target fitness: 1.606347 stddevs: 2.679973 target, 0.071333 reference
gold result: -9.828611
2019-04-21T00-38-35_107900000_luna <--> 2019-04-21T00-38-35_107900000_brmlab (pass 2)
snr: 11.0 35.8 dB
reference error = 0.004504 ppm, target error = -0.027762 ppm
Measured dist: -10.310080 target fitness: 1.607636 stddevs: 1.430084 target, 0.005792 reference
gold result: -9.828611
| correlation 4458 | 2019-04-21T00-38-35_107900000_luna | 2019-04-21T00-38-35_107900000_brevnov |
|---|
| gain | [14, 14, 14, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 43.080 stddev = 0.007 reference, 36.947 target [samples]; known correct: 1.067 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-38-35_107900000_luna <--> 2019-04-21T00-38-35_107900000_brevnov (pass 1)
reference error = -0.302335 ppm, target error = 0.115517 ppm
Measured dist: 42.419610 target fitness: 1.428164 stddevs: 37.375046 target, 0.081182 reference
gold result: 1.067134
2019-04-21T00-38-35_107900000_luna <--> 2019-04-21T00-38-35_107900000_brevnov (pass 2)
snr: 11.0 31.7 dB
reference error = 0.015622 ppm, target error = -0.065143 ppm
Measured dist: 43.079769 target fitness: 1.420793 stddevs: 36.947098 target, 0.007030 reference
gold result: 1.067134
| correlation 4459 | 2019-04-21T00-38-35_107900000_brmlab | 2019-04-21T00-38-35_107900000_brevnov |
|---|
| gain | [12, 12, 12, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107900000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 37.342 stddev = 0.005 reference, 63.444 target [samples]; known correct: 10.896 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-21T00-38-35_107900000_brmlab <--> 2019-04-21T00-38-35_107900000_brevnov (pass 1)
reference error = -0.559536 ppm, target error = 0.030431 ppm
Measured dist: 128.071223 target fitness: 1.412532 stddevs: 65.234787 target, 0.152270 reference
gold result: 10.895745
2019-04-21T00-38-35_107900000_brmlab <--> 2019-04-21T00-38-35_107900000_brevnov (pass 2)
snr: 36.5 31.7 dB
reference error = 0.011458 ppm, target error = 0.053453 ppm
Measured dist: 37.342395 target fitness: 1.404181 stddevs: 63.443775 target, 0.005198 reference
gold result: 10.895745
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
