TDOA measurements at 97200 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 4256 | 2019-04-20T22-57-50_96200000_pankrac | 2019-04-20T22-57-50_96200000_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 | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -16.927 stddev = 0.011 reference, 1.180 target [samples]; known correct: -16.483 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_brmlab (pass 1)
reference error = 0.487170 ppm, target error = 0.168851 ppm
Measured dist: -15.995232 target fitness: 2.174421 stddevs: 2.406422 target, 0.134296 reference
gold result: -16.482538
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_brmlab (pass 2)
snr: 31.7 44.6 dB
reference error = 0.035384 ppm, target error = 0.269694 ppm
Measured dist: -16.927162 target fitness: 2.175759 stddevs: 1.180254 target, 0.010670 reference
gold result: -16.482538
| correlation 4257 | 2019-04-20T22-57-50_96200000_pankrac | 2019-04-20T22-57-50_96200000_luna |
|---|
| gain | [7, 7, 7, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -74.282 stddev = 0.011 reference, 1.150 target [samples]; known correct: -71.538 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_luna (pass 1)
reference error = 0.268378 ppm, target error = 0.084051 ppm
Measured dist: -73.942755 target fitness: 2.478531 stddevs: 1.571962 target, 0.073618 reference
gold result: -71.538394
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_luna (pass 2)
snr: 31.7 40.8 dB
reference error = 0.010062 ppm, target error = 0.040958 ppm
Measured dist: -74.281632 target fitness: 2.481926 stddevs: 1.150409 target, 0.010773 reference
gold result: -71.538394
| correlation 4258 | 2019-04-20T22-57-50_96200000_pankrac | 2019-04-20T22-57-50_96200000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -26.591 stddev = 0.004 reference, 1.190 target [samples]; known correct: -28.778 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_brevnov (pass 1)
reference error = -0.002732 ppm, target error = -0.010118 ppm
Measured dist: -26.592787 target fitness: 2.196918 stddevs: 1.194133 target, 0.004325 reference
gold result: -28.778373
2019-04-20T22-57-50_96200000_pankrac <--> 2019-04-20T22-57-50_96200000_brevnov (pass 2)
snr: 31.7 53.7 dB
reference error = 0.002196 ppm, target error = 0.000650 ppm
Measured dist: -26.590876 target fitness: 2.195625 stddevs: 1.190140 target, 0.004083 reference
gold result: -28.778373
| correlation 4259 | 2019-04-20T22-57-50_96200000_brmlab | 2019-04-20T22-57-50_96200000_luna |
|---|
| gain | [3, 3, 3, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -57.876 stddev = 0.017 reference, 1.015 target [samples]; known correct: -55.056 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_brmlab <--> 2019-04-20T22-57-50_96200000_luna (pass 1)
reference error = -0.196565 ppm, target error = -0.162904 ppm
Measured dist: -58.079955 target fitness: 2.339890 stddevs: 1.597888 target, 0.054031 reference
gold result: -55.055856
2019-04-20T22-57-50_96200000_brmlab <--> 2019-04-20T22-57-50_96200000_luna (pass 2)
snr: 45.4 40.8 dB
reference error = -0.047036 ppm, target error = -0.050845 ppm
Measured dist: -57.876392 target fitness: 2.350637 stddevs: 1.015497 target, 0.016741 reference
gold result: -55.055856
| correlation 4260 | 2019-04-20T22-57-50_96200000_brmlab | 2019-04-20T22-57-50_96200000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -10.286 stddev = 0.005 reference, 1.049 target [samples]; known correct: -12.296 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_brmlab <--> 2019-04-20T22-57-50_96200000_brevnov (pass 1)
reference error = -0.533140 ppm, target error = -0.182193 ppm
Measured dist: -10.501389 target fitness: 2.152205 stddevs: 2.450725 target, 0.145151 reference
gold result: -12.295835
2019-04-20T22-57-50_96200000_brmlab <--> 2019-04-20T22-57-50_96200000_brevnov (pass 2)
snr: 44.2 53.8 dB
reference error = 0.012233 ppm, target error = -0.161824 ppm
Measured dist: -10.286170 target fitness: 2.155345 stddevs: 1.049386 target, 0.005191 reference
gold result: -12.295835
| correlation 4261 | 2019-04-20T22-57-50_96200000_luna | 2019-04-20T22-57-50_96200000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 47.151 stddev = 0.010 reference, 1.136 target [samples]; known correct: 42.760 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-57-50_96200000_luna <--> 2019-04-20T22-57-50_96200000_brevnov (pass 1)
reference error = -0.297163 ppm, target error = -0.124584 ppm
Measured dist: 47.451928 target fitness: 2.265821 stddevs: 1.601160 target, 0.080042 reference
gold result: 42.760020
2019-04-20T22-57-50_96200000_luna <--> 2019-04-20T22-57-50_96200000_brevnov (pass 2)
snr: 40.8 53.9 dB
reference error = 0.017330 ppm, target error = -0.024384 ppm
Measured dist: 47.151062 target fitness: 2.276341 stddevs: 1.136465 target, 0.010347 reference
gold result: 42.760020
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
