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 4388 | 2019-04-21T00-10-31_89000000_pankrac | 2019-04-21T00-10-31_89000000_luna |
|---|
| gain | [7, 7, 7, 1] | [10, 10, 10, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -7.994 stddev = 0.007 reference, 1.349 target [samples]; known correct: -11.302 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-21T00-10-31_89000000_pankrac <--> 2019-04-21T00-10-31_89000000_luna (pass 1)
reference error = 0.295724 ppm, target error = 0.076150 ppm
Measured dist: -8.231019 target fitness: 2.439611 stddevs: 1.693968 target, 0.079944 reference
gold result: -11.301848
2019-04-21T00-10-31_89000000_pankrac <--> 2019-04-21T00-10-31_89000000_luna (pass 2)
snr: 27.9 10.7 dB
reference error = -0.013870 ppm, target error = 0.016887 ppm
Measured dist: -7.994112 target fitness: 2.448661 stddevs: 1.348990 target, 0.007094 reference
gold result: -11.301848
| correlation 4389 | 2019-04-21T00-10-31_89000000_pankrac | 2019-04-21T00-10-31_89000000_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 | 89000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -14.260 stddev = 0.005 reference, 0.495 target [samples]; known correct: -15.380 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-21T00-10-31_89000000_pankrac <--> 2019-04-21T00-10-31_89000000_brmlab (pass 1)
reference error = 0.517392 ppm, target error = 0.098556 ppm
Measured dist: -13.655841 target fitness: 2.357929 stddevs: 1.821917 target, 0.141710 reference
gold result: -15.379956
2019-04-21T00-10-31_89000000_pankrac <--> 2019-04-21T00-10-31_89000000_brmlab (pass 2)
snr: 27.9 53.4 dB
reference error = 0.002655 ppm, target error = -0.003497 ppm
Measured dist: -14.260487 target fitness: 2.362823 stddevs: 0.495248 target, 0.004525 reference
gold result: -15.379956
| correlation 4390 | 2019-04-21T00-10-31_89000000_pankrac | 2019-04-21T00-10-31_89000000_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 | 89000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 13.082 stddev = 0.004 reference, 1.385 target [samples]; known correct: 2.314 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-21T00-10-31_89000000_pankrac <--> 2019-04-21T00-10-31_89000000_brevnov (pass 1)
reference error = -0.014911 ppm, target error = 0.045171 ppm
Measured dist: 13.073110 target fitness: 2.127011 stddevs: 1.377932 target, 0.005482 reference
gold result: 2.314336
2019-04-21T00-10-31_89000000_pankrac <--> 2019-04-21T00-10-31_89000000_brevnov (pass 2)
snr: 27.9 32.8 dB
reference error = 0.000821 ppm, target error = 0.064245 ppm
Measured dist: 13.082297 target fitness: 2.126874 stddevs: 1.384928 target, 0.003600 reference
gold result: 2.314336
| correlation 4391 | 2019-04-21T00-10-31_89000000_luna | 2019-04-21T00-10-31_89000000_brmlab |
|---|
| gain | [10, 10, 10, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -6.533 stddev = 0.007 reference, 1.218 target [samples]; known correct: -4.078 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
 |
Correlator log
2019-04-21T00-10-31_89000000_luna <--> 2019-04-21T00-10-31_89000000_brmlab (pass 1)
reference error = 0.242382 ppm, target error = 0.071738 ppm
Measured dist: -6.267021 target fitness: 2.455751 stddevs: 1.485447 target, 0.065839 reference
gold result: -4.078108
2019-04-21T00-10-31_89000000_luna <--> 2019-04-21T00-10-31_89000000_brmlab (pass 2)
snr: 10.7 53.0 dB
reference error = -0.002158 ppm, target error = -0.047633 ppm
Measured dist: -6.533000 target fitness: 2.456712 stddevs: 1.217604 target, 0.006650 reference
gold result: -4.078108
| correlation 4392 | 2019-04-21T00-10-31_89000000_luna | 2019-04-21T00-10-31_89000000_brevnov |
|---|
| gain | [10, 10, 10, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 89000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 21.852 stddev = 0.007 reference, 2.974 target [samples]; known correct: 13.616 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-10-31_89000000_luna <--> 2019-04-21T00-10-31_89000000_brevnov (pass 1)
reference error = -0.304009 ppm, target error = -0.007115 ppm
Measured dist: 21.177690 target fitness: 2.200614 stddevs: 3.289057 target, 0.082473 reference
gold result: 13.616184
2019-04-21T00-10-31_89000000_luna <--> 2019-04-21T00-10-31_89000000_brevnov (pass 2)
snr: 10.7 32.8 dB
reference error = 0.008553 ppm, target error = 0.037338 ppm
Measured dist: 21.851753 target fitness: 2.204467 stddevs: 2.974285 target, 0.006648 reference
gold result: 13.616184
| correlation 4393 | 2019-04-21T00-10-31_89000000_brmlab | 2019-04-21T00-10-31_89000000_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 | 89000000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 26.668 stddev = 0.006 reference, 1.468 target [samples]; known correct: 17.694 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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|
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Correlator log
2019-04-21T00-10-31_89000000_brmlab <--> 2019-04-21T00-10-31_89000000_brevnov (pass 1)
reference error = -0.546987 ppm, target error = -0.029290 ppm
Measured dist: 26.375465 target fitness: 2.131585 stddevs: 2.673200 target, 0.150376 reference
gold result: 17.694292
2019-04-21T00-10-31_89000000_brmlab <--> 2019-04-21T00-10-31_89000000_brevnov (pass 2)
snr: 53.4 32.8 dB
reference error = 0.014058 ppm, target error = 0.056858 ppm
Measured dist: 26.667705 target fitness: 2.138039 stddevs: 1.467924 target, 0.005636 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
