TDOA measurements at 99700 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 3854 | 2019-04-20T20-10-33_100700000_pankrac | 2019-04-20T20-10-33_100700000_luna |
|---|
| gain | [3, 3, 3, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 60.600 stddev = 0.015 reference, 1.331 target [samples]; known correct: 59.771 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_luna (pass 1)
reference error = 0.266582 ppm, target error = 0.144165 ppm
Measured dist: 60.029766 target fitness: 1.901465 stddevs: 2.463137 target, 0.074153 reference
gold result: 59.770501
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_luna (pass 2)
snr: 55.3 32.1 dB
reference error = 0.038548 ppm, target error = 0.013809 ppm
Measured dist: 60.600236 target fitness: 1.910149 stddevs: 1.330925 target, 0.015167 reference
gold result: 59.770501
| correlation 3855 | 2019-04-20T20-10-33_100700000_pankrac | 2019-04-20T20-10-33_100700000_brmlab |
|---|
| gain | [3, 3, 3, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 56.161 stddev = 0.008 reference, 1.311 target [samples]; known correct: 53.089 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_brmlab (pass 1)
reference error = 0.491211 ppm, target error = 0.017174 ppm
Measured dist: 56.989002 target fitness: 1.888043 stddevs: 4.101140 target, 0.135720 reference
gold result: 53.089377
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_brmlab (pass 2)
snr: 55.3 45.3 dB
reference error = 0.026995 ppm, target error = 0.201304 ppm
Measured dist: 56.161169 target fitness: 1.900477 stddevs: 1.310910 target, 0.008491 reference
gold result: 53.089377
| correlation 3856 | 2019-04-20T20-10-33_100700000_pankrac | 2019-04-20T20-10-33_100700000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 125.733 stddev = 0.007 reference, 25.091 target [samples]; known correct: 35.915 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_brevnov (pass 1)
reference error = -0.048620 ppm, target error = -0.104713 ppm
Measured dist: 125.639117 target fitness: 1.787391 stddevs: 24.913712 target, 0.013792 reference
gold result: 35.914913
2019-04-20T20-10-33_100700000_pankrac <--> 2019-04-20T20-10-33_100700000_brevnov (pass 2)
snr: 55.3 30.5 dB
reference error = -0.023335 ppm, target error = -0.056336 ppm
Measured dist: 125.732543 target fitness: 1.784493 stddevs: 25.091072 target, 0.007427 reference
gold result: 35.914913
| correlation 3857 | 2019-04-20T20-10-33_100700000_luna | 2019-04-20T20-10-33_100700000_brmlab |
|---|
| gain | [7, 7, 7, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -3.330 stddev = 0.015 reference, 1.162 target [samples]; known correct: -6.681 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-10-33_100700000_luna <--> 2019-04-20T20-10-33_100700000_brmlab (pass 1)
reference error = 0.179288 ppm, target error = 0.109847 ppm
Measured dist: -3.948299 target fitness: 1.802290 stddevs: 2.145285 target, 0.049736 reference
gold result: -6.681123
2019-04-20T20-10-33_100700000_luna <--> 2019-04-20T20-10-33_100700000_brmlab (pass 2)
snr: 32.1 44.4 dB
reference error = 0.035726 ppm, target error = 0.008847 ppm
Measured dist: -3.330047 target fitness: 1.807708 stddevs: 1.162189 target, 0.015331 reference
gold result: -6.681123
| correlation 3858 | 2019-04-20T20-10-33_100700000_luna | 2019-04-20T20-10-33_100700000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 12.630 stddev = 0.015 reference, 25.977 target [samples]; known correct: -23.856 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-10-33_100700000_luna <--> 2019-04-20T20-10-33_100700000_brevnov (pass 1)
reference error = -0.336532 ppm, target error = -0.006380 ppm
Measured dist: 11.996000 target fitness: 1.467748 stddevs: 25.736366 target, 0.093229 reference
gold result: -23.855587
2019-04-20T20-10-33_100700000_luna <--> 2019-04-20T20-10-33_100700000_brevnov (pass 2)
snr: 32.1 30.5 dB
reference error = -0.036461 ppm, target error = -0.033226 ppm
Measured dist: 12.629715 target fitness: 1.460720 stddevs: 25.976826 target, 0.014708 reference
gold result: -23.855587
| correlation 3859 | 2019-04-20T20-10-33_100700000_brmlab | 2019-04-20T20-10-33_100700000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 100700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 13.039 stddev = 0.009 reference, 23.269 target [samples]; known correct: -17.174 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-10-33_100700000_brmlab <--> 2019-04-20T20-10-33_100700000_brevnov (pass 1)
reference error = -0.557994 ppm, target error = 0.001413 ppm
Measured dist: 16.889942 target fitness: 1.486412 stddevs: 25.000517 target, 0.154550 reference
gold result: -17.174464
2019-04-20T20-10-33_100700000_brmlab <--> 2019-04-20T20-10-33_100700000_brevnov (pass 2)
snr: 44.6 30.6 dB
reference error = -0.028930 ppm, target error = 0.048814 ppm
Measured dist: 13.039115 target fitness: 1.496740 stddevs: 23.268906 target, 0.008887 reference
gold result: -17.174464
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
