TDOA measurements at 89000 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 4334 | 2019-04-20T23-36-16_88400000_pankrac | 2019-04-20T23-36-16_88400000_luna |
|---|
| gain | [7, 7, 7, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -9.308 stddev = 0.011 reference, 5.366 target [samples]; known correct: -11.302 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-36-16_88400000_pankrac <--> 2019-04-20T23-36-16_88400000_luna (pass 1)
reference error = 0.256065 ppm, target error = 0.031773 ppm
Measured dist: -7.855994 target fitness: 1.567181 stddevs: 5.963818 target, 0.070381 reference
gold result: -11.301848
2019-04-20T23-36-16_88400000_pankrac <--> 2019-04-20T23-36-16_88400000_luna (pass 2)
snr: 30.6 10.9 dB
reference error = 0.034288 ppm, target error = 0.060049 ppm
Measured dist: -9.308267 target fitness: 1.566344 stddevs: 5.366109 target, 0.011487 reference
gold result: -11.301848
| correlation 4335 | 2019-04-20T23-36-16_88400000_pankrac | 2019-04-20T23-36-16_88400000_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 | 88400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -14.336 stddev = 0.005 reference, 2.411 target [samples]; known correct: -15.380 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-20T23-36-16_88400000_pankrac <--> 2019-04-20T23-36-16_88400000_brmlab (pass 1)
reference error = -0.373030 ppm, target error = -0.021067 ppm
Measured dist: -14.285295 target fitness: 1.569003 stddevs: 3.841100 target, 0.102890 reference
gold result: -15.379956
2019-04-20T23-36-16_88400000_pankrac <--> 2019-04-20T23-36-16_88400000_brmlab (pass 2)
snr: 30.7 54.5 dB
reference error = 0.007574 ppm, target error = -0.004076 ppm
Measured dist: -14.336275 target fitness: 1.573961 stddevs: 2.411107 target, 0.004771 reference
gold result: -15.379956
| correlation 4336 | 2019-04-20T23-36-16_88400000_pankrac | 2019-04-20T23-36-16_88400000_brevnov |
|---|
| 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 | 88400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 14.000 stddev = 0.004 reference, 4.310 target [samples]; known correct: 2.314 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-36-16_88400000_pankrac <--> 2019-04-20T23-36-16_88400000_brevnov (pass 1)
reference error = -0.001394 ppm, target error = -0.022195 ppm
Measured dist: 14.016454 target fitness: 1.499619 stddevs: 4.318274 target, 0.003485 reference
gold result: 2.314336
2019-04-20T23-36-16_88400000_pankrac <--> 2019-04-20T23-36-16_88400000_brevnov (pass 2)
snr: 30.7 32.5 dB
reference error = 0.001002 ppm, target error = -0.016030 ppm
Measured dist: 13.999983 target fitness: 1.499832 stddevs: 4.309564 target, 0.004029 reference
gold result: 2.314336
| correlation 4337 | 2019-04-20T23-36-16_88400000_luna | 2019-04-20T23-36-16_88400000_brmlab |
|---|
| gain | [11, 11, 11, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -5.091 stddev = 0.007 reference, 2.177 target [samples]; known correct: -4.078 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-36-16_88400000_luna <--> 2019-04-20T23-36-16_88400000_brmlab (pass 1)
reference error = -0.647917 ppm, target error = 0.063515 ppm
Measured dist: -10.255842 target fitness: 1.564399 stddevs: 6.132438 target, 0.178294 reference
gold result: -4.078108
2019-04-20T23-36-16_88400000_luna <--> 2019-04-20T23-36-16_88400000_brmlab (pass 2)
snr: 10.9 54.4 dB
reference error = -0.003592 ppm, target error = -0.063993 ppm
Measured dist: -5.090920 target fitness: 1.573895 stddevs: 2.177236 target, 0.006915 reference
gold result: -4.078108
| correlation 4338 | 2019-04-20T23-36-16_88400000_luna | 2019-04-20T23-36-16_88400000_brevnov |
|---|
| gain | [11, 11, 11, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 24.570 stddev = 0.010 reference, 4.030 target [samples]; known correct: 13.616 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-36-16_88400000_luna <--> 2019-04-20T23-36-16_88400000_brevnov (pass 1)
reference error = -0.259774 ppm, target error = 0.017353 ppm
Measured dist: 21.945636 target fitness: 1.503818 stddevs: 5.179626 target, 0.071552 reference
gold result: 13.616184
2019-04-20T23-36-16_88400000_luna <--> 2019-04-20T23-36-16_88400000_brevnov (pass 2)
snr: 10.9 32.5 dB
reference error = -0.030647 ppm, target error = -0.076880 ppm
Measured dist: 24.569697 target fitness: 1.500440 stddevs: 4.030480 target, 0.010496 reference
gold result: 13.616184
| correlation 4339 | 2019-04-20T23-36-16_88400000_brmlab | 2019-04-20T23-36-16_88400000_brevnov |
|---|
| 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 | 88400000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 27.612 stddev = 0.005 reference, 2.262 target [samples]; known correct: 17.694 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T23-36-16_88400000_brmlab <--> 2019-04-20T23-36-16_88400000_brevnov (pass 1)
reference error = 0.373109 ppm, target error = 0.053145 ppm
Measured dist: 24.405694 target fitness: 1.542480 stddevs: 4.310480 target, 0.102132 reference
gold result: 17.694292
2019-04-20T23-36-16_88400000_brmlab <--> 2019-04-20T23-36-16_88400000_brevnov (pass 2)
snr: 54.5 32.5 dB
reference error = -0.012496 ppm, target error = -0.031017 ppm
Measured dist: 27.611812 target fitness: 1.538573 stddevs: 2.261749 target, 0.005194 reference
gold result: 17.694292
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
