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 4370 | 2019-04-20T23-50-38_103400000_pankrac | 2019-04-20T23-50-38_103400000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 29.503 stddev = 0.011 reference, 1.141 target [samples]; known correct: 27.728 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-50-38_103400000_pankrac <--> 2019-04-20T23-50-38_103400000_brmlab (pass 1)
reference error = 0.488360 ppm, target error = -0.093353 ppm
Measured dist: 28.107941 target fitness: 1.747444 stddevs: 4.142876 target, 0.134549 reference
gold result: 27.728272
2019-04-20T23-50-38_103400000_pankrac <--> 2019-04-20T23-50-38_103400000_brmlab (pass 2)
snr: 39.9 54.8 dB
reference error = 0.034966 ppm, target error = 0.062026 ppm
Measured dist: 29.503489 target fitness: 1.716297 stddevs: 1.140764 target, 0.010673 reference
gold result: 27.728272
| correlation 4371 | 2019-04-20T23-50-38_103400000_pankrac | 2019-04-20T23-50-38_103400000_luna |
|---|
| gain | [9, 9, 9, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 15.934 stddev = 0.008 reference, 0.603 target [samples]; known correct: 15.836 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T23-50-38_103400000_pankrac <--> 2019-04-20T23-50-38_103400000_luna (pass 1)
reference error = 0.311952 ppm, target error = 0.013570 ppm
Measured dist: 15.591983 target fitness: 1.716063 stddevs: 2.102082 target, 0.084172 reference
gold result: 15.836457
2019-04-20T23-50-38_103400000_pankrac <--> 2019-04-20T23-50-38_103400000_luna (pass 2)
snr: 39.9 33.9 dB
reference error = -0.016480 ppm, target error = 0.020780 ppm
Measured dist: 15.934170 target fitness: 1.718021 stddevs: 0.602813 target, 0.007844 reference
gold result: 15.836457
| correlation 4372 | 2019-04-20T23-50-38_103400000_pankrac | 2019-04-20T23-50-38_103400000_brevnov |
|---|
| 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 | 103400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -38.569 stddev = 0.004 reference, 1.416 target [samples]; known correct: -38.660 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-50-38_103400000_pankrac <--> 2019-04-20T23-50-38_103400000_brevnov (pass 1)
reference error = -0.021646 ppm, target error = 0.081272 ppm
Measured dist: -38.600886 target fitness: 1.775933 stddevs: 1.428991 target, 0.007320 reference
gold result: -38.660396
2019-04-20T23-50-38_103400000_pankrac <--> 2019-04-20T23-50-38_103400000_brevnov (pass 2)
snr: 39.9 46.7 dB
reference error = 0.002020 ppm, target error = 0.085958 ppm
Measured dist: -38.569453 target fitness: 1.773962 stddevs: 1.415799 target, 0.003994 reference
gold result: -38.660396
| correlation 4373 | 2019-04-20T23-50-38_103400000_brmlab | 2019-04-20T23-50-38_103400000_luna |
|---|
| gain | [5, 5, 5, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -13.387 stddev = 0.007 reference, 0.946 target [samples]; known correct: -11.892 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-50-38_103400000_brmlab <--> 2019-04-20T23-50-38_103400000_luna (pass 1)
reference error = -0.231991 ppm, target error = -0.011437 ppm
Measured dist: -13.689376 target fitness: 1.707295 stddevs: 1.984290 target, 0.063350 reference
gold result: -11.891815
2019-04-20T23-50-38_103400000_brmlab <--> 2019-04-20T23-50-38_103400000_luna (pass 2)
snr: 54.5 33.9 dB
reference error = 0.006342 ppm, target error = 0.047226 ppm
Measured dist: -13.387289 target fitness: 1.705474 stddevs: 0.946282 target, 0.006836 reference
gold result: -11.891815
| correlation 4374 | 2019-04-20T23-50-38_103400000_brmlab | 2019-04-20T23-50-38_103400000_brevnov |
|---|
| gain | [5, 5, 5, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -68.319 stddev = 0.005 reference, 0.742 target [samples]; known correct: -66.389 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-50-38_103400000_brmlab <--> 2019-04-20T23-50-38_103400000_brevnov (pass 1)
reference error = -0.555108 ppm, target error = -0.071951 ppm
Measured dist: -69.868777 target fitness: 1.916350 stddevs: 4.173312 target, 0.152766 reference
gold result: -66.388668
2019-04-20T23-50-38_103400000_brmlab <--> 2019-04-20T23-50-38_103400000_brevnov (pass 2)
snr: 54.9 46.7 dB
reference error = 0.013204 ppm, target error = -0.085734 ppm
Measured dist: -68.318986 target fitness: 1.917462 stddevs: 0.741848 target, 0.005347 reference
gold result: -66.388668
| correlation 4375 | 2019-04-20T23-50-38_103400000_luna | 2019-04-20T23-50-38_103400000_brevnov |
|---|
| 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 | 103400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -54.505 stddev = 0.007 reference, 1.028 target [samples]; known correct: -54.497 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-50-38_103400000_luna <--> 2019-04-20T23-50-38_103400000_brevnov (pass 1)
reference error = -0.308252 ppm, target error = -0.034670 ppm
Measured dist: -54.179454 target fitness: 1.869585 stddevs: 2.480576 target, 0.083971 reference
gold result: -54.496853
2019-04-20T23-50-38_103400000_luna <--> 2019-04-20T23-50-38_103400000_brevnov (pass 2)
snr: 33.9 46.7 dB
reference error = -0.007236 ppm, target error = 0.089981 ppm
Measured dist: -54.505475 target fitness: 1.862968 stddevs: 1.027810 target, 0.006762 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
