TDOA measurements at 101100 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 4130 | 2019-04-20T21-54-59_101100000_pankrac | 2019-04-20T21-54-59_101100000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 25.983 stddev = 0.007 reference, 9.459 target [samples]; known correct: 27.728 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_brmlab (pass 1)
reference error = -0.362041 ppm, target error = -0.023465 ppm
Measured dist: 26.479124 target fitness: 1.129614 stddevs: 15.395577 target, 0.098851 reference
gold result: 27.728272
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_brmlab (pass 2)
snr: 10.8 55.8 dB
reference error = 0.016968 ppm, target error = 0.013601 ppm
Measured dist: 25.983214 target fitness: 1.129013 stddevs: 9.458584 target, 0.006556 reference
gold result: 27.728272
| correlation 4131 | 2019-04-20T21-54-59_101100000_pankrac | 2019-04-20T21-54-59_101100000_luna |
|---|
| gain | [15, 15, 15, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 16.390 stddev = 0.013 reference, 10.894 target [samples]; known correct: 15.836 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_luna (pass 1)
reference error = 0.272358 ppm, target error = 0.052671 ppm
Measured dist: 16.894318 target fitness: 1.122698 stddevs: 17.230968 target, 0.074875 reference
gold result: 15.836457
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_luna (pass 2)
snr: 10.8 32.5 dB
reference error = 0.037526 ppm, target error = 0.021405 ppm
Measured dist: 16.389530 target fitness: 1.122208 stddevs: 10.893520 target, 0.013010 reference
gold result: 15.836457
| correlation 4132 | 2019-04-20T21-54-59_101100000_pankrac | 2019-04-20T21-54-59_101100000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -43.763 stddev = 0.004 reference, 11.943 target [samples]; known correct: -38.660 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_brevnov (pass 1)
reference error = 0.006080 ppm, target error = 0.027381 ppm
Measured dist: -43.757410 target fitness: 1.163530 stddevs: 11.945608 target, 0.004914 reference
gold result: -38.660396
2019-04-20T21-54-59_101100000_pankrac <--> 2019-04-20T21-54-59_101100000_brevnov (pass 2)
snr: 10.8 49.8 dB
reference error = 0.001915 ppm, target error = 0.019292 ppm
Measured dist: -43.762632 target fitness: 1.163453 stddevs: 11.943464 target, 0.004049 reference
gold result: -38.660396
| correlation 4133 | 2019-04-20T21-54-59_101100000_brmlab | 2019-04-20T21-54-59_101100000_luna |
|---|
| gain | [5, 5, 5, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -9.879 stddev = 0.009 reference, 0.514 target [samples]; known correct: -11.892 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-54-59_101100000_brmlab <--> 2019-04-20T21-54-59_101100000_luna (pass 1)
reference error = 0.667996 ppm, target error = 0.303167 ppm
Measured dist: -9.540438 target fitness: 1.117432 stddevs: 28.405926 target, 0.179810 reference
gold result: -11.891815
2019-04-20T21-54-59_101100000_brmlab <--> 2019-04-20T21-54-59_101100000_luna (pass 2)
snr: 55.7 32.5 dB
reference error = -0.019627 ppm, target error = -0.055109 ppm
Measured dist: -9.879190 target fitness: 1.115066 stddevs: 0.514148 target, 0.008825 reference
gold result: -11.891815
| correlation 4134 | 2019-04-20T21-54-59_101100000_brmlab | 2019-04-20T21-54-59_101100000_brevnov |
|---|
| gain | [5, 5, 5, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -69.000 stddev = 0.005 reference, 0.931 target [samples]; known correct: -66.389 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-54-59_101100000_brmlab <--> 2019-04-20T21-54-59_101100000_brevnov (pass 1)
reference error = 0.360806 ppm, target error = 0.430731 ppm
Measured dist: -68.917577 target fitness: 1.164707 stddevs: 1.786967 target, 0.097774 reference
gold result: -66.388668
2019-04-20T21-54-59_101100000_brmlab <--> 2019-04-20T21-54-59_101100000_brevnov (pass 2)
snr: 55.8 49.8 dB
reference error = -0.010903 ppm, target error = 0.215512 ppm
Measured dist: -68.999919 target fitness: 1.166563 stddevs: 0.931263 target, 0.004808 reference
gold result: -66.388668
| correlation 4135 | 2019-04-20T21-54-59_101100000_luna | 2019-04-20T21-54-59_101100000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 101100000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -59.500 stddev = 0.008 reference, 1.159 target [samples]; known correct: -54.497 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-54-59_101100000_luna <--> 2019-04-20T21-54-59_101100000_brevnov (pass 1)
reference error = -0.313000 ppm, target error = -0.075873 ppm
Measured dist: -59.626925 target fitness: 1.147336 stddevs: 1.533694 target, 0.085266 reference
gold result: -54.496853
2019-04-20T21-54-59_101100000_luna <--> 2019-04-20T21-54-59_101100000_brevnov (pass 2)
snr: 32.5 49.8 dB
reference error = 0.015465 ppm, target error = 0.248355 ppm
Measured dist: -59.499806 target fitness: 1.147555 stddevs: 1.159456 target, 0.007977 reference
gold result: -54.496853
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
