TDOA measurements at 107900 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 4376 | 2019-04-21T00-00-06_107700000_pankrac | 2019-04-21T00-00-06_107700000_luna |
|---|
| gain | [12, 12, 12, 1] | [15, 15, 15, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 28.186 stddev = 0.007 reference, 1.541 target [samples]; known correct: 32.304 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-21T00-00-06_107700000_pankrac <--> 2019-04-21T00-00-06_107700000_luna (pass 1)
reference error = 0.298730 ppm, target error = 0.002141 ppm
Measured dist: 28.748213 target fitness: 2.077823 stddevs: 2.470138 target, 0.081157 reference
gold result: 32.303581
2019-04-21T00-00-06_107700000_pankrac <--> 2019-04-21T00-00-06_107700000_luna (pass 2)
snr: 16.5 12.0 dB
reference error = -0.011988 ppm, target error = 0.027074 ppm
Measured dist: 28.185599 target fitness: 2.068205 stddevs: 1.541464 target, 0.007156 reference
gold result: 32.303581
| correlation 4377 | 2019-04-21T00-00-06_107700000_pankrac | 2019-04-21T00-00-06_107700000_brmlab |
|---|
| gain | [12, 12, 12, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 18.828 stddev = 0.004 reference, 0.951 target [samples]; known correct: 22.475 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-00-06_107700000_pankrac <--> 2019-04-21T00-00-06_107700000_brmlab (pass 1)
reference error = -0.364140 ppm, target error = -0.036959 ppm
Measured dist: 19.082195 target fitness: 2.117105 stddevs: 2.590215 target, 0.099272 reference
gold result: 22.474971
2019-04-21T00-00-06_107700000_pankrac <--> 2019-04-21T00-00-06_107700000_brmlab (pass 2)
snr: 16.5 35.9 dB
reference error = 0.002435 ppm, target error = 0.005490 ppm
Measured dist: 18.828276 target fitness: 2.124467 stddevs: 0.950695 target, 0.004164 reference
gold result: 22.474971
| correlation 4378 | 2019-04-21T00-00-06_107700000_pankrac | 2019-04-21T00-00-06_107700000_brevnov |
|---|
| gain | [12, 12, 12, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 31.099 stddev = 0.004 reference, 44.748 target [samples]; known correct: 33.371 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-21T00-00-06_107700000_pankrac <--> 2019-04-21T00-00-06_107700000_brevnov (pass 1)
reference error = -0.019523 ppm, target error = -0.073061 ppm
Measured dist: 31.048671 target fitness: 1.475713 stddevs: 44.663860 target, 0.006285 reference
gold result: 33.370715
2019-04-21T00-00-06_107700000_pankrac <--> 2019-04-21T00-00-06_107700000_brevnov (pass 2)
snr: 16.5 28.4 dB
reference error = -0.000870 ppm, target error = -0.009595 ppm
Measured dist: 31.098998 target fitness: 1.476612 stddevs: 44.747639 target, 0.003568 reference
gold result: 33.370715
| correlation 4379 | 2019-04-21T00-00-06_107700000_luna | 2019-04-21T00-00-06_107700000_brmlab |
|---|
| gain | [15, 15, 15, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -10.304 stddev = 0.011 reference, 1.093 target [samples]; known correct: -9.829 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-21T00-00-06_107700000_luna <--> 2019-04-21T00-00-06_107700000_brmlab (pass 1)
reference error = -0.681471 ppm, target error = 0.083932 ppm
Measured dist: -11.544283 target fitness: 2.081745 stddevs: 4.476550 target, 0.184864 reference
gold result: -9.828611
2019-04-21T00-00-06_107700000_luna <--> 2019-04-21T00-00-06_107700000_brmlab (pass 2)
snr: 12.0 35.6 dB
reference error = 0.035411 ppm, target error = -0.001429 ppm
Measured dist: -10.304324 target fitness: 2.098851 stddevs: 1.092870 target, 0.011242 reference
gold result: -9.828611
| correlation 4380 | 2019-04-21T00-00-06_107700000_luna | 2019-04-21T00-00-06_107700000_brevnov |
|---|
| gain | [15, 15, 15, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 46.088 stddev = 0.008 reference, 35.831 target [samples]; known correct: 1.067 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
 |
Correlator log
2019-04-21T00-00-06_107700000_luna <--> 2019-04-21T00-00-06_107700000_brevnov (pass 1)
reference error = -0.321725 ppm, target error = -0.028352 ppm
Measured dist: 52.285669 target fitness: 1.477197 stddevs: 35.560314 target, 0.086857 reference
gold result: 1.067134
2019-04-21T00-00-06_107700000_luna <--> 2019-04-21T00-00-06_107700000_brevnov (pass 2)
snr: 12.0 28.4 dB
reference error = 0.016841 ppm, target error = 0.008078 ppm
Measured dist: 46.088300 target fitness: 1.467469 stddevs: 35.830845 target, 0.007675 reference
gold result: 1.067134
| correlation 4381 | 2019-04-21T00-00-06_107700000_brmlab | 2019-04-21T00-00-06_107700000_brevnov |
|---|
| gain | [11, 11, 11, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 107700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 127.091 stddev = 0.004 reference, 60.230 target [samples]; known correct: 10.896 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-21T00-00-06_107700000_brmlab <--> 2019-04-21T00-00-06_107700000_brevnov (pass 1)
reference error = 0.335407 ppm, target error = -0.041781 ppm
Measured dist: 49.969287 target fitness: 1.495721 stddevs: 60.506878 target, 0.091737 reference
gold result: 10.895745
2019-04-21T00-00-06_107700000_brmlab <--> 2019-04-21T00-00-06_107700000_brevnov (pass 2)
snr: 35.8 28.4 dB
reference error = 0.004192 ppm, target error = -0.045553 ppm
Measured dist: 127.090971 target fitness: 1.494596 stddevs: 60.229771 target, 0.003763 reference
gold result: 10.895745
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
