TDOA measurements at 90700 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 4142 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_brmlab |
|---|
| 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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 27.791 stddev = 0.005 reference, 0.867 target [samples]; known correct: 29.106 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brmlab (pass 1)
reference error = 0.494329 ppm, target error = 0.055944 ppm
Measured dist: 27.629555 target fitness: 1.780369 stddevs: 3.168205 target, 0.136242 reference
gold result: 29.106471
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brmlab (pass 2)
snr: 37.4 47.4 dB
reference error = -0.010300 ppm, target error = 0.045541 ppm
Measured dist: 27.791437 target fitness: 1.786805 stddevs: 0.867024 target, 0.004919 reference
gold result: 29.106471
| correlation 4143 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -36.391 stddev = 0.004 reference, 1.203 target [samples]; known correct: -37.247 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brevnov (pass 1)
reference error = -0.064207 ppm, target error = 0.093866 ppm
Measured dist: -36.451717 target fitness: 1.765178 stddevs: 1.248464 target, 0.017912 reference
gold result: -37.247119
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_brevnov (pass 2)
snr: 37.4 47.8 dB
reference error = 0.002758 ppm, target error = 0.171281 ppm
Measured dist: -36.391331 target fitness: 1.766923 stddevs: 1.202894 target, 0.004139 reference
gold result: -37.247119
| correlation 4144 | 2019-04-20T22-03-17_91200000_pankrac | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [7, 7, 7, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 16.345 stddev = 0.008 reference, 1.052 target [samples]; known correct: 17.803 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = 0.239939 ppm, target error = 0.085701 ppm
Measured dist: 15.981063 target fitness: 1.744302 stddevs: 1.859055 target, 0.064607 reference
gold result: 17.802583
2019-04-20T22-03-17_91200000_pankrac <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 37.4 36.7 dB
reference error = -0.003852 ppm, target error = 0.023851 ppm
Measured dist: 16.345453 target fitness: 1.747058 stddevs: 1.052180 target, 0.008031 reference
gold result: 17.802583
| correlation 4145 | 2019-04-20T22-03-17_91200000_brmlab | 2019-04-20T22-03-17_91200000_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 | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -64.760 stddev = 0.004 reference, 0.933 target [samples]; known correct: -66.354 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_brevnov (pass 1)
reference error = -0.515278 ppm, target error = -0.010796 ppm
Measured dist: -65.010111 target fitness: 1.901327 stddevs: 3.600198 target, 0.140989 reference
gold result: -66.353590
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_brevnov (pass 2)
snr: 47.5 47.8 dB
reference error = -0.009816 ppm, target error = 0.031350 ppm
Measured dist: -64.759634 target fitness: 1.911889 stddevs: 0.932697 target, 0.003988 reference
gold result: -66.353590
| correlation 4146 | 2019-04-20T22-03-17_91200000_brmlab | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [4, 4, 4, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -11.224 stddev = 0.009 reference, 0.390 target [samples]; known correct: -11.304 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
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Correlator log
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = -0.250205 ppm, target error = -0.074247 ppm
Measured dist: -11.766763 target fitness: 1.757448 stddevs: 1.587788 target, 0.068289 reference
gold result: -11.303888
2019-04-20T22-03-17_91200000_brmlab <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 47.5 36.7 dB
reference error = 0.003478 ppm, target error = -0.047114 ppm
Measured dist: -11.224494 target fitness: 1.754539 stddevs: 0.390295 target, 0.008844 reference
gold result: -11.303888
| correlation 4147 | 2019-04-20T22-03-17_91200000_brevnov | 2019-04-20T22-03-17_91200000_luna |
|---|
| gain | [4, 4, 4, 1] | [9, 9, 9, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 91200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 53.504 stddev = 0.008 reference, 1.273 target [samples]; known correct: 55.050 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T22-03-17_91200000_brevnov <--> 2019-04-20T22-03-17_91200000_luna (pass 1)
reference error = 0.311371 ppm, target error = 0.005991 ppm
Measured dist: 53.298780 target fitness: 1.778056 stddevs: 2.296446 target, 0.083568 reference
gold result: 55.049702
2019-04-20T22-03-17_91200000_brevnov <--> 2019-04-20T22-03-17_91200000_luna (pass 2)
snr: 47.7 36.7 dB
reference error = -0.009484 ppm, target error = 0.020372 ppm
Measured dist: 53.503981 target fitness: 1.787404 stddevs: 1.272835 target, 0.008113 reference
gold result: 55.049702
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
