TDOA measurements at 103700 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 4292 | 2019-04-20T23-10-33_103700000_pankrac | 2019-04-20T23-10-33_103700000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 29.607 stddev = 0.005 reference, 1.169 target [samples]; known correct: 27.728 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_brmlab (pass 1)
reference error = -0.355672 ppm, target error = -0.086152 ppm
Measured dist: 30.784986 target fitness: 1.462269 stddevs: 3.470866 target, 0.096580 reference
gold result: 27.728272
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_brmlab (pass 2)
snr: 42.2 52.4 dB
reference error = -0.006011 ppm, target error = 0.106476 ppm
Measured dist: 29.606619 target fitness: 1.460708 stddevs: 1.169325 target, 0.004685 reference
gold result: 27.728272
| correlation 4293 | 2019-04-20T23-10-33_103700000_pankrac | 2019-04-20T23-10-33_103700000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -38.042 stddev = 0.004 reference, 1.295 target [samples]; known correct: -38.660 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_brevnov (pass 1)
reference error = -0.023190 ppm, target error = 0.062208 ppm
Measured dist: -38.050477 target fitness: 1.444961 stddevs: 1.330636 target, 0.007583 reference
gold result: -38.660396
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_brevnov (pass 2)
snr: 42.2 46.8 dB
reference error = 0.000075 ppm, target error = 0.073478 ppm
Measured dist: -38.041781 target fitness: 1.445881 stddevs: 1.295418 target, 0.003787 reference
gold result: -38.660396
| correlation 4294 | 2019-04-20T23-10-33_103700000_pankrac | 2019-04-20T23-10-33_103700000_luna |
|---|
| gain | [9, 9, 9, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 15.923 stddev = 0.007 reference, 1.950 target [samples]; known correct: 15.836 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_luna (pass 1)
reference error = 0.318073 ppm, target error = -0.011070 ppm
Measured dist: 16.462094 target fitness: 1.430094 stddevs: 2.967373 target, 0.086432 reference
gold result: 15.836457
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_luna (pass 2)
snr: 42.3 32.2 dB
reference error = -0.015208 ppm, target error = -0.069330 ppm
Measured dist: 15.922519 target fitness: 1.425554 stddevs: 1.949622 target, 0.007361 reference
gold result: 15.836457
| correlation 4295 | 2019-04-20T23-10-33_103700000_brmlab | 2019-04-20T23-10-33_103700000_brevnov |
|---|
| gain | [6, 6, 6, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -67.477 stddev = 0.005 reference, 0.882 target [samples]; known correct: -66.389 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_brmlab <--> 2019-04-20T23-10-33_103700000_brevnov (pass 1)
reference error = 0.347078 ppm, target error = -0.010629 ppm
Measured dist: -66.639540 target fitness: 1.538641 stddevs: 3.065700 target, 0.094226 reference
gold result: -66.388668
2019-04-20T23-10-33_103700000_brmlab <--> 2019-04-20T23-10-33_103700000_brevnov (pass 2)
snr: 52.4 46.8 dB
reference error = -0.011881 ppm, target error = 0.042421 ppm
Measured dist: -67.476556 target fitness: 1.538482 stddevs: 0.882214 target, 0.005238 reference
gold result: -66.388668
| correlation 4296 | 2019-04-20T23-10-33_103700000_brmlab | 2019-04-20T23-10-33_103700000_luna |
|---|
| gain | [6, 6, 6, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -13.689 stddev = 0.011 reference, 2.245 target [samples]; known correct: -11.892 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_brmlab <--> 2019-04-20T23-10-33_103700000_luna (pass 1)
reference error = 0.707390 ppm, target error = 0.009595 ppm
Measured dist: -15.403477 target fitness: 1.397891 stddevs: 6.295328 target, 0.191185 reference
gold result: -11.891815
2019-04-20T23-10-33_103700000_brmlab <--> 2019-04-20T23-10-33_103700000_luna (pass 2)
snr: 52.4 32.2 dB
reference error = -0.034429 ppm, target error = -0.035831 ppm
Measured dist: -13.689442 target fitness: 1.409836 stddevs: 2.244713 target, 0.010827 reference
gold result: -11.891815
| correlation 4297 | 2019-04-20T23-10-33_103700000_brevnov | 2019-04-20T23-10-33_103700000_luna |
|---|
| gain | [7, 7, 7, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 54.616 stddev = 0.006 reference, 2.082 target [samples]; known correct: 54.497 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_brevnov <--> 2019-04-20T23-10-33_103700000_luna (pass 1)
reference error = 0.336665 ppm, target error = -0.051024 ppm
Measured dist: 54.391890 target fitness: 1.450361 stddevs: 3.293994 target, 0.091118 reference
gold result: 54.496853
2019-04-20T23-10-33_103700000_brevnov <--> 2019-04-20T23-10-33_103700000_luna (pass 2)
snr: 46.8 32.2 dB
reference error = -0.011399 ppm, target error = -0.023949 ppm
Measured dist: 54.616004 target fitness: 1.440472 stddevs: 2.081537 target, 0.006493 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
