TDOA measurements at 95700 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 4022 | 2019-04-20T21-11-27_96600000_pankrac | 2019-04-20T21-11-27_96600000_luna |
|---|
| gain | [8, 8, 8, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 51.983 stddev = 0.008 reference, 0.587 target [samples]; known correct: 52.216 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_luna (pass 1)
reference error = 0.304755 ppm, target error = 0.149875 ppm
Measured dist: 51.839986 target fitness: 1.118997 stddevs: 6.289977 target, 0.084968 reference
gold result: 52.216497
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_luna (pass 2)
snr: 40.3 27.6 dB
reference error = -0.014203 ppm, target error = 0.022153 ppm
Measured dist: 51.983152 target fitness: 1.120911 stddevs: 0.587113 target, 0.007736 reference
gold result: 52.216497
| correlation 4023 | 2019-04-20T21-11-27_96600000_pankrac | 2019-04-20T21-11-27_96600000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 46.285 stddev = 0.009 reference, 0.689 target [samples]; known correct: 45.570 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brmlab (pass 1)
reference error = 0.493297 ppm, target error = 0.252830 ppm
Measured dist: 46.153050 target fitness: 1.117751 stddevs: 27.380053 target, 0.135207 reference
gold result: 45.570215
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brmlab (pass 2)
snr: 40.3 36.8 dB
reference error = 0.031893 ppm, target error = 0.208900 ppm
Measured dist: 46.285209 target fitness: 1.119139 stddevs: 0.688867 target, 0.009460 reference
gold result: 45.570215
| correlation 4024 | 2019-04-20T21-11-27_96600000_pankrac | 2019-04-20T21-11-27_96600000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 84.253 stddev = 0.005 reference, 13.089 target [samples]; known correct: 33.653 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brevnov (pass 1)
reference error = -0.091177 ppm, target error = 0.096012 ppm
Measured dist: 83.189328 target fitness: 1.050995 stddevs: 13.984415 target, 0.025390 reference
gold result: 33.653139
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 40.3 10.3 dB
reference error = 0.003255 ppm, target error = -0.018323 ppm
Measured dist: 84.253473 target fitness: 1.051155 stddevs: 13.089029 target, 0.004695 reference
gold result: 33.653139
| correlation 4025 | 2019-04-20T21-11-27_96600000_luna | 2019-04-20T21-11-27_96600000_brmlab |
|---|
| gain | [8, 8, 8, 1] | [3, 3, 3, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -5.467 stddev = 0.008 reference, 0.519 target [samples]; known correct: -6.646 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brmlab (pass 1)
reference error = 0.236071 ppm, target error = 0.245751 ppm
Measured dist: -5.615399 target fitness: 1.110458 stddevs: 6.163779 target, 0.066139 reference
gold result: -6.646282
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brmlab (pass 2)
snr: 27.6 36.7 dB
reference error = -0.007793 ppm, target error = 0.081301 ppm
Measured dist: -5.467198 target fitness: 1.110407 stddevs: 0.518970 target, 0.008081 reference
gold result: -6.646282
| correlation 4026 | 2019-04-20T21-11-27_96600000_luna | 2019-04-20T21-11-27_96600000_brevnov |
|---|
| gain | [8, 8, 8, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 32.167 stddev = 0.008 reference, 15.437 target [samples]; known correct: -18.563 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brevnov (pass 1)
reference error = -0.392316 ppm, target error = -0.074444 ppm
Measured dist: 30.639430 target fitness: 1.049834 stddevs: 35.145248 target, 0.108600 reference
gold result: -18.563359
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 27.6 10.4 dB
reference error = 0.019804 ppm, target error = -0.016856 ppm
Measured dist: 32.167217 target fitness: 1.048363 stddevs: 15.437299 target, 0.008400 reference
gold result: -18.563359
| correlation 4027 | 2019-04-20T21-11-27_96600000_brmlab | 2019-04-20T21-11-27_96600000_brevnov |
|---|
| gain | [3, 3, 3, 1] | [1, 1, 1, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 96600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 37.126 stddev = 0.008 reference, 14.808 target [samples]; known correct: -11.917 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T21-11-27_96600000_brmlab <--> 2019-04-20T21-11-27_96600000_brevnov (pass 1)
reference error = -0.586356 ppm, target error = -0.071072 ppm
Measured dist: 36.028275 target fitness: 1.051342 stddevs: 40.995010 target, 0.159890 reference
gold result: -11.917077
2019-04-20T21-11-27_96600000_brmlab <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 36.8 10.3 dB
reference error = -0.023459 ppm, target error = 0.046446 ppm
Measured dist: 37.126410 target fitness: 1.048906 stddevs: 14.807551 target, 0.007556 reference
gold result: -11.917077
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
