TDOA measurements at 97200 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 4034 | 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 | -73.096 stddev = 0.008 reference, 0.367 target [samples]; known correct: -71.538 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
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 = -0.020966 ppm
Measured dist: -73.259587 target fitness: 2.201790 stddevs: 1.949226 target, 0.084968 reference
gold result: -71.538394
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_luna (pass 2)
snr: 35.4 46.6 dB
reference error = -0.014203 ppm, target error = -0.035227 ppm
Measured dist: -73.095882 target fitness: 2.190656 stddevs: 0.366892 target, 0.007736 reference
gold result: -71.538394
| correlation 4035 | 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 | -16.871 stddev = 0.009 reference, 0.512 target [samples]; known correct: -16.483 |
| 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 = -0.004484 ppm
Measured dist: -17.754373 target fitness: 1.894948 stddevs: 3.525150 target, 0.135207 reference
gold result: -16.482538
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brmlab (pass 2)
snr: 35.4 48.9 dB
reference error = 0.031893 ppm, target error = 0.055802 ppm
Measured dist: -16.871256 target fitness: 1.897768 stddevs: 0.512454 target, 0.009460 reference
gold result: -16.482538
| correlation 4036 | 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 | -27.126 stddev = 0.005 reference, 0.490 target [samples]; known correct: -28.778 |
| 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 = -0.091125 ppm, target error = -0.094827 ppm
Measured dist: -27.096945 target fitness: 1.943733 stddevs: 0.772253 target, 0.025379 reference
gold result: -28.778373
2019-04-20T21-11-27_96600000_pankrac <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 35.4 57.0 dB
reference error = 0.002856 ppm, target error = -0.010587 ppm
Measured dist: -27.125677 target fitness: 1.943258 stddevs: 0.489725 target, 0.004697 reference
gold result: -28.778373
| correlation 4037 | 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 | 56.489 stddev = 0.008 reference, 0.539 target [samples]; known correct: 55.056 |
| 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 = -0.016377 ppm
Measured dist: 56.587902 target fitness: 1.982046 stddevs: 1.598436 target, 0.066139 reference
gold result: 55.055856
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brmlab (pass 2)
snr: 46.6 49.4 dB
reference error = -0.007793 ppm, target error = -0.003778 ppm
Measured dist: 56.488781 target fitness: 1.985038 stddevs: 0.538928 target, 0.008081 reference
gold result: 55.055856
| correlation 4038 | 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 | 46.096 stddev = 0.008 reference, 0.442 target [samples]; known correct: 42.760 |
| 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 = 0.014665 ppm
Measured dist: 45.590487 target fitness: 1.944681 stddevs: 2.660359 target, 0.108600 reference
gold result: 42.760020
2019-04-20T21-11-27_96600000_luna <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 46.6 57.0 dB
reference error = 0.019804 ppm, target error = 0.019929 ppm
Measured dist: 46.096254 target fitness: 1.942136 stddevs: 0.441787 target, 0.008400 reference
gold result: 42.760020
| correlation 4039 | 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 | -10.254 stddev = 0.008 reference, 0.487 target [samples]; known correct: -12.296 |
| 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 = -0.029640 ppm
Measured dist: -9.029238 target fitness: 1.899278 stddevs: 4.244549 target, 0.159890 reference
gold result: -12.295835
2019-04-20T21-11-27_96600000_brmlab <--> 2019-04-20T21-11-27_96600000_brevnov (pass 2)
snr: 49.1 57.0 dB
reference error = -0.023459 ppm, target error = -0.051475 ppm
Measured dist: -10.253777 target fitness: 1.904185 stddevs: 0.486512 target, 0.007556 reference
gold result: -12.295835
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
