TDOA measurements at 92300 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 3956 | 2019-04-20T20-51-15_92600000_pankrac | 2019-04-20T20-51-15_92600000_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 | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 11.616 stddev = 0.010 reference, 1.215 target [samples]; known correct: 8.605 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_luna (pass 1)
reference error = 0.292188 ppm, target error = 0.031074 ppm
Measured dist: 11.226535 target fitness: 1.625826 stddevs: 1.959739 target, 0.080643 reference
gold result: 8.604617
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_luna (pass 2)
snr: 14.1 23.1 dB
reference error = -0.007249 ppm, target error = 0.052185 ppm
Measured dist: 11.615706 target fitness: 1.624519 stddevs: 1.215195 target, 0.010121 reference
gold result: 8.604617
| correlation 3957 | 2019-04-20T20-51-15_92600000_pankrac | 2019-04-20T20-51-15_92600000_brmlab |
|---|
| gain | [7, 7, 7, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 37.081 stddev = 0.007 reference, 1.240 target [samples]; known correct: 33.272 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_brmlab (pass 1)
reference error = -0.389683 ppm, target error = -0.045130 ppm
Measured dist: 37.369670 target fitness: 1.675157 stddevs: 2.428682 target, 0.106421 reference
gold result: 33.272033
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_brmlab (pass 2)
snr: 14.1 20.4 dB
reference error = 0.018650 ppm, target error = 0.102260 ppm
Measured dist: 37.080819 target fitness: 1.693160 stddevs: 1.240334 target, 0.006597 reference
gold result: 33.272033
| correlation 3958 | 2019-04-20T20-51-15_92600000_pankrac | 2019-04-20T20-51-15_92600000_brevnov |
|---|
| gain | [7, 7, 7, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -47.108 stddev = 0.005 reference, 1.616 target [samples]; known correct: -50.027 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_brevnov (pass 1)
reference error = -0.091030 ppm, target error = -0.031995 ppm
Measured dist: -47.224374 target fitness: 1.625605 stddevs: 1.681756 target, 0.024929 reference
gold result: -50.026627
2019-04-20T20-51-15_92600000_pankrac <--> 2019-04-20T20-51-15_92600000_brevnov (pass 2)
snr: 14.1 28.3 dB
reference error = 0.004837 ppm, target error = 0.021952 ppm
Measured dist: -47.108326 target fitness: 1.630187 stddevs: 1.615537 target, 0.004604 reference
gold result: -50.026627
| correlation 3959 | 2019-04-20T20-51-15_92600000_luna | 2019-04-20T20-51-15_92600000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [2, 2, 2, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 25.604 stddev = 0.012 reference, 0.350 target [samples]; known correct: 24.667 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_luna <--> 2019-04-20T20-51-15_92600000_brmlab (pass 1)
reference error = -0.676684 ppm, target error = -0.028777 ppm
Measured dist: 27.069440 target fitness: 1.597539 stddevs: 3.923555 target, 0.182911 reference
gold result: 24.667416
2019-04-20T20-51-15_92600000_luna <--> 2019-04-20T20-51-15_92600000_brmlab (pass 2)
snr: 23.1 19.4 dB
reference error = 0.022049 ppm, target error = 0.055143 ppm
Measured dist: 25.604257 target fitness: 1.607181 stddevs: 0.349601 target, 0.012277 reference
gold result: 24.667416
| correlation 3960 | 2019-04-20T20-51-15_92600000_luna | 2019-04-20T20-51-15_92600000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -58.201 stddev = 0.009 reference, 0.967 target [samples]; known correct: -58.631 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_luna <--> 2019-04-20T20-51-15_92600000_brevnov (pass 1)
reference error = -0.384742 ppm, target error = -0.024975 ppm
Measured dist: -57.870460 target fitness: 1.670295 stddevs: 2.245420 target, 0.106042 reference
gold result: -58.631245
2019-04-20T20-51-15_92600000_luna <--> 2019-04-20T20-51-15_92600000_brevnov (pass 2)
snr: 23.1 28.3 dB
reference error = 0.015272 ppm, target error = 0.183038 ppm
Measured dist: -58.201187 target fitness: 1.667545 stddevs: 0.967169 target, 0.009352 reference
gold result: -58.631245
| correlation 3961 | 2019-04-20T20-51-15_92600000_brmlab | 2019-04-20T20-51-15_92600000_brevnov |
|---|
| gain | [2, 2, 2, 1] | [5, 5, 5, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 92600000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -83.692 stddev = 0.007 reference, 0.935 target [samples]; known correct: -83.299 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-51-15_92600000_brmlab <--> 2019-04-20T20-51-15_92600000_brevnov (pass 1)
reference error = 0.266152 ppm, target error = 0.035608 ppm
Measured dist: -84.020748 target fitness: 1.840692 stddevs: 1.923418 target, 0.071930 reference
gold result: -83.298661
2019-04-20T20-51-15_92600000_brmlab <--> 2019-04-20T20-51-15_92600000_brevnov (pass 2)
snr: 20.1 28.3 dB
reference error = 0.022081 ppm, target error = 0.251319 ppm
Measured dist: -83.691514 target fitness: 1.836100 stddevs: 0.935261 target, 0.007129 reference
gold result: -83.298661
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
