TDOA measurements at 746000 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 3818 | 2019-04-20T20-00-13_746000000_pankrac | 2019-04-20T20-00-13_746000000_luna |
|---|
| gain | [15, 15, 15, 1] | [14, 14, 14, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 746000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -71.933 stddev = 0.013 reference, 1.358 target [samples]; known correct: -66.151 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-00-13_746000000_pankrac <--> 2019-04-20T20-00-13_746000000_luna (pass 1)
reference error = 0.275607 ppm, target error = 0.266919 ppm
Measured dist: -72.221937 target fitness: 4.822147 stddevs: 1.696467 target, 0.074520 reference
gold result: -66.151099
2019-04-20T20-00-13_746000000_pankrac <--> 2019-04-20T20-00-13_746000000_luna (pass 2)
snr: 4.2 4.8 dB
reference error = -0.012122 ppm, target error = -0.076472 ppm
Measured dist: -71.933018 target fitness: 11.532252 stddevs: 1.358210 target, 0.012577 reference
gold result: -66.151099
| correlation 3819 | 2019-04-20T20-00-13_746000000_pankrac | 2019-04-20T20-00-13_746000000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 746000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -9.945 stddev = 0.005 reference, 2.936 target [samples]; known correct: -8.895 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-00-13_746000000_pankrac <--> 2019-04-20T20-00-13_746000000_brmlab (pass 1)
reference error = 0.525763 ppm, target error = 0.374421 ppm
Measured dist: -9.694528 target fitness: 2.706160 stddevs: 65.970116 target, 0.144892 reference
gold result: -8.894771
2019-04-20T20-00-13_746000000_pankrac <--> 2019-04-20T20-00-13_746000000_brmlab (pass 2)
snr: 4.2 3.0 dB
reference error = -0.008085 ppm, target error = 0.046762 ppm
Measured dist: -9.944573 target fitness: 4.275255 stddevs: 2.935580 target, 0.004882 reference
gold result: -8.894771
| correlation 3820 | 2019-04-20T20-00-13_746000000_pankrac | 2019-04-20T20-00-13_746000000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 746000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -57.996 stddev = 0.000 reference, 1.514 target [samples]; known correct: -55.191 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-00-13_746000000_pankrac <--> 2019-04-20T20-00-13_746000000_brevnov (pass 1)
reference error = -0.090850 ppm, target error = -0.014960 ppm
Measured dist: -61.239469 target fitness: 11.115650 stddevs: 1.564360 target, 0.025442 reference
gold result: -55.190761
2019-04-20T20-00-13_746000000_pankrac <--> 2019-04-20T20-00-13_746000000_brevnov (pass 2)
snr: 4.2 2.7 dB
reference error = 0.000000 ppm, target error = -0.000959 ppm
Measured dist: -57.995859 target fitness: 11.822047 stddevs: 1.513852 target, 0.000000 reference
gold result: -55.190761
| correlation 3821 | 2019-04-20T20-00-13_746000000_luna | 2019-04-20T20-00-13_746000000_brmlab |
|---|
| gain | [14, 14, 14, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 746000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 58.665 stddev = 0.017 reference, 0.408 target [samples]; known correct: 57.256 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-00-13_746000000_luna <--> 2019-04-20T20-00-13_746000000_brmlab (pass 1)
reference error = 0.242464 ppm, target error = 0.151100 ppm
Measured dist: 58.686222 target fitness: 8.591173 stddevs: 0.877352 target, 0.067635 reference
gold result: 57.256327
2019-04-20T20-00-13_746000000_luna <--> 2019-04-20T20-00-13_746000000_brmlab (pass 2)
snr: 4.8 3.3 dB
reference error = 0.013890 ppm, target error = -0.001807 ppm
Measured dist: 58.664676 target fitness: 14.844752 stddevs: 0.407508 target, 0.016887 reference
gold result: 57.256327
| correlation 3822 | 2019-04-20T20-00-13_746000000_luna | 2019-04-20T20-00-13_746000000_brevnov |
|---|
| 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 | 746000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 10.850 stddev = 0.012 reference, 0.018 target [samples]; known correct: 10.960 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-00-13_746000000_luna <--> 2019-04-20T20-00-13_746000000_brevnov (pass 1)
reference error = -0.358422 ppm, target error = 0.053010 ppm
Measured dist: 11.958712 target fitness: 2.698909 stddevs: 75.833427 target, 0.097653 reference
gold result: 10.960337
2019-04-20T20-00-13_746000000_luna <--> 2019-04-20T20-00-13_746000000_brevnov (pass 2)
snr: 4.8 2.7 dB
reference error = 0.006527 ppm, target error = -0.008173 ppm
Measured dist: 10.850405 target fitness: 53.725983 stddevs: 0.017948 target, 0.011765 reference
gold result: 10.960337
| correlation 3823 | 2019-04-20T20-00-13_746000000_brmlab | 2019-04-20T20-00-13_746000000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 746000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -47.720 stddev = 0.005 reference, 0.389 target [samples]; known correct: -46.296 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-00-13_746000000_brmlab <--> 2019-04-20T20-00-13_746000000_brevnov (pass 1)
reference error = -0.615120 ppm, target error = -0.463202 ppm
Measured dist: -47.623839 target fitness: 3.683941 stddevs: 5.176984 target, 0.168838 reference
gold result: -46.295990
2019-04-20T20-00-13_746000000_brmlab <--> 2019-04-20T20-00-13_746000000_brevnov (pass 2)
snr: 3.3 2.7 dB
reference error = 0.008206 ppm, target error = -0.020965 ppm
Measured dist: -47.720130 target fitness: 16.093007 stddevs: 0.388975 target, 0.004568 reference
gold result: -46.295990
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
