TDOA measurements at 101600 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 4088 | 2019-04-20T21-37-58_102500000_pankrac | 2019-04-20T21-37-58_102500000_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 | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 21.027 stddev = 0.011 reference, 0.908 target [samples]; known correct: 29.154 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_luna (pass 1)
reference error = 0.272585 ppm, target error = -0.040292 ppm
Measured dist: 22.319433 target fitness: 1.881323 stddevs: 2.361766 target, 0.075190 reference
gold result: 29.153519
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_luna (pass 2)
snr: 25.1 29.3 dB
reference error = 0.000070 ppm, target error = 0.047808 ppm
Measured dist: 21.027139 target fitness: 1.885665 stddevs: 0.907620 target, 0.011476 reference
gold result: 29.153519
| correlation 4089 | 2019-04-20T21-37-58_102500000_pankrac | 2019-04-20T21-37-58_102500000_brmlab |
|---|
| 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 | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 32.265 stddev = 0.006 reference, 0.762 target [samples]; known correct: 31.475 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brmlab (pass 1)
reference error = -0.389034 ppm, target error = 0.039225 ppm
Measured dist: 29.385490 target fitness: 1.892735 stddevs: 3.274163 target, 0.106779 reference
gold result: 31.474600
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brmlab (pass 2)
snr: 25.1 21.7 dB
reference error = 0.016002 ppm, target error = -0.193074 ppm
Measured dist: 32.265190 target fitness: 1.886756 stddevs: 0.762491 target, 0.006147 reference
gold result: 31.474600
| correlation 4090 | 2019-04-20T21-37-58_102500000_pankrac | 2019-04-20T21-37-58_102500000_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 | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -36.478 stddev = 0.004 reference, 1.573 target [samples]; known correct: -2.216 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brevnov (pass 1)
reference error = -0.019473 ppm, target error = -0.049347 ppm
Measured dist: -35.660790 target fitness: 1.972433 stddevs: 1.574964 target, 0.006722 reference
gold result: -2.216170
2019-04-20T21-37-58_102500000_pankrac <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 25.1 37.9 dB
reference error = 0.001120 ppm, target error = 0.063909 ppm
Measured dist: -36.478303 target fitness: 1.971944 stddevs: 1.572900 target, 0.004218 reference
gold result: -2.216170
| correlation 4091 | 2019-04-20T21-37-58_102500000_luna | 2019-04-20T21-37-58_102500000_brmlab |
|---|
| 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 | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 10.861 stddev = 0.018 reference, 0.726 target [samples]; known correct: 2.321 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brmlab (pass 1)
reference error = -0.673631 ppm, target error = 0.024907 ppm
Measured dist: 4.276406 target fitness: 1.841617 stddevs: 5.979605 target, 0.185886 reference
gold result: 2.321080
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brmlab (pass 2)
snr: 29.3 22.4 dB
reference error = 0.033273 ppm, target error = 0.110817 ppm
Measured dist: 10.860808 target fitness: 1.853345 stddevs: 0.725948 target, 0.018058 reference
gold result: 2.321080
| correlation 4092 | 2019-04-20T21-37-58_102500000_luna | 2019-04-20T21-37-58_102500000_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 | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -57.352 stddev = 0.012 reference, 1.178 target [samples]; known correct: -31.370 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brevnov (pass 1)
reference error = -0.294410 ppm, target error = -0.076299 ppm
Measured dist: -55.823369 target fitness: 2.092629 stddevs: 2.696331 target, 0.082402 reference
gold result: -31.369689
2019-04-20T21-37-58_102500000_luna <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 29.3 37.9 dB
reference error = 0.003739 ppm, target error = -0.026670 ppm
Measured dist: -57.351904 target fitness: 2.032371 stddevs: 1.177595 target, 0.011505 reference
gold result: -31.369689
| correlation 4093 | 2019-04-20T21-37-58_102500000_brmlab | 2019-04-20T21-37-58_102500000_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 | 102500000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -68.733 stddev = 0.004 reference, 1.453 target [samples]; known correct: -33.691 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-37-58_102500000_brmlab <--> 2019-04-20T21-37-58_102500000_brevnov (pass 1)
reference error = 0.346950 ppm, target error = 0.013376 ppm
Measured dist: -65.991158 target fitness: 2.099130 stddevs: 3.430464 target, 0.095618 reference
gold result: -33.690770
2019-04-20T21-37-58_102500000_brmlab <--> 2019-04-20T21-37-58_102500000_brevnov (pass 2)
snr: 21.9 37.9 dB
reference error = 0.008179 ppm, target error = 0.081474 ppm
Measured dist: -68.732896 target fitness: 2.130971 stddevs: 1.453383 target, 0.004362 reference
gold result: -33.690770
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
