TDOA measurements at 98100 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 4040 | 2019-04-20T21-19-12_98700000_pankrac | 2019-04-20T21-19-12_98700000_luna |
|---|
| gain | [2, 2, 2, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 8.859 stddev = 0.012 reference, 1.187 target [samples]; known correct: 15.836 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_luna (pass 1)
reference error = 0.328280 ppm, target error = -0.033895 ppm
Measured dist: 10.661431 target fitness: 1.762269 stddevs: 2.626609 target, 0.091729 reference
gold result: 15.836457
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_luna (pass 2)
snr: 32.1 29.5 dB
reference error = -0.015714 ppm, target error = -0.254322 ppm
Measured dist: 8.859015 target fitness: 1.762607 stddevs: 1.186825 target, 0.012010 reference
gold result: 15.836457
| correlation 4041 | 2019-04-20T21-19-12_98700000_pankrac | 2019-04-20T21-19-12_98700000_brmlab |
|---|
| gain | [2, 2, 2, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 22.103 stddev = 0.006 reference, 0.826 target [samples]; known correct: 27.728 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brmlab (pass 1)
reference error = -0.368544 ppm, target error = 0.042582 ppm
Measured dist: 21.483910 target fitness: 1.757290 stddevs: 3.227886 target, 0.101408 reference
gold result: 27.728272
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brmlab (pass 2)
snr: 32.0 54.6 dB
reference error = 0.016743 ppm, target error = -0.185092 ppm
Measured dist: 22.102786 target fitness: 1.755701 stddevs: 0.825692 target, 0.006338 reference
gold result: 27.728272
| correlation 4042 | 2019-04-20T21-19-12_98700000_pankrac | 2019-04-20T21-19-12_98700000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -43.296 stddev = 0.004 reference, 1.428 target [samples]; known correct: -38.660 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brevnov (pass 1)
reference error = -0.101271 ppm, target error = 0.047420 ppm
Measured dist: -43.624345 target fitness: 1.780154 stddevs: 1.674414 target, 0.028157 reference
gold result: -38.660396
2019-04-20T21-19-12_98700000_pankrac <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 32.0 48.2 dB
reference error = 0.004637 ppm, target error = 0.180760 ppm
Measured dist: -43.295557 target fitness: 1.783355 stddevs: 1.427761 target, 0.004090 reference
gold result: -38.660396
| correlation 4043 | 2019-04-20T21-19-12_98700000_luna | 2019-04-20T21-19-12_98700000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 13.554 stddev = 0.017 reference, 0.698 target [samples]; known correct: 11.892 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brmlab (pass 1)
reference error = -0.630945 ppm, target error = 0.053845 ppm
Measured dist: 11.039388 target fitness: 1.804046 stddevs: 5.442470 target, 0.176412 reference
gold result: 11.891815
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brmlab (pass 2)
snr: 29.5 53.2 dB
reference error = -0.032766 ppm, target error = 0.208297 ppm
Measured dist: 13.554156 target fitness: 1.816373 stddevs: 0.697681 target, 0.016561 reference
gold result: 11.891815
| correlation 4044 | 2019-04-20T21-19-12_98700000_luna | 2019-04-20T21-19-12_98700000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -52.531 stddev = 0.013 reference, 2.035 target [samples]; known correct: -54.497 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brevnov (pass 1)
reference error = -0.429642 ppm, target error = 0.073901 ppm
Measured dist: -52.461365 target fitness: 1.831374 stddevs: 3.747728 target, 0.118921 reference
gold result: -54.496853
2019-04-20T21-19-12_98700000_luna <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 29.5 48.2 dB
reference error = 0.023152 ppm, target error = 0.271988 ppm
Measured dist: -52.530779 target fitness: 1.839913 stddevs: 2.035209 target, 0.013105 reference
gold result: -54.496853
| correlation 4045 | 2019-04-20T21-19-12_98700000_brmlab | 2019-04-20T21-19-12_98700000_brevnov |
|---|
| gain | [4, 4, 4, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 98700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -64.729 stddev = 0.005 reference, 2.040 target [samples]; known correct: -66.389 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T21-19-12_98700000_brmlab <--> 2019-04-20T21-19-12_98700000_brevnov (pass 1)
reference error = 0.263951 ppm, target error = 0.048702 ppm
Measured dist: -65.253241 target fitness: 1.883767 stddevs: 2.935015 target, 0.071810 reference
gold result: -66.388668
2019-04-20T21-19-12_98700000_brmlab <--> 2019-04-20T21-19-12_98700000_brevnov (pass 2)
snr: 54.2 48.2 dB
reference error = -0.008593 ppm, target error = 0.257665 ppm
Measured dist: -64.729497 target fitness: 1.889585 stddevs: 2.039585 target, 0.004670 reference
gold result: -66.388668
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
