TDOA measurements at 102900 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 4286 | 2019-04-20T23-10-33_103700000_pankrac | 2019-04-20T23-10-33_103700000_brmlab |
|---|
| gain | [9, 9, 9, 1] | [6, 6, 6, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref:  tgt:  | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 38.165 stddev = 0.005 reference, 0.489 target [samples]; known correct: 41.884 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
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Correlator log
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_brmlab (pass 1)
reference error = -0.355672 ppm, target error = -0.028515 ppm
Measured dist: 37.821271 target fitness: 2.421252 stddevs: 1.697929 target, 0.096580 reference
gold result: 41.883851
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_brmlab (pass 2)
snr: 35.1 33.4 dB
reference error = -0.006011 ppm, target error = -0.034774 ppm
Measured dist: 38.164853 target fitness: 2.428682 stddevs: 0.488949 target, 0.004685 reference
gold result: 41.883851
| correlation 4287 | 2019-04-20T23-10-33_103700000_pankrac | 2019-04-20T23-10-33_103700000_brevnov |
|---|
| gain | [9, 9, 9, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -24.822 stddev = 0.004 reference, 1.701 target [samples]; known correct: -23.634 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_brevnov (pass 1)
reference error = -0.023190 ppm, target error = -0.101945 ppm
Measured dist: -24.880483 target fitness: 1.649411 stddevs: 1.710155 target, 0.007583 reference
gold result: -23.634450
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_brevnov (pass 2)
snr: 35.1 27.7 dB
reference error = 0.000075 ppm, target error = -0.122573 ppm
Measured dist: -24.821637 target fitness: 1.650235 stddevs: 1.701024 target, 0.003787 reference
gold result: -23.634450
| correlation 4288 | 2019-04-20T23-10-33_103700000_pankrac | 2019-04-20T23-10-33_103700000_luna |
|---|
| gain | [9, 9, 9, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 33.116 stddev = 0.007 reference, 0.516 target [samples]; known correct: 34.954 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_luna (pass 1)
reference error = 0.318073 ppm, target error = 0.071670 ppm
Measured dist: 33.467982 target fitness: 2.393485 stddevs: 1.390640 target, 0.086432 reference
gold result: 34.954401
2019-04-20T23-10-33_103700000_pankrac <--> 2019-04-20T23-10-33_103700000_luna (pass 2)
snr: 35.1 22.2 dB
reference error = -0.015208 ppm, target error = 0.005130 ppm
Measured dist: 33.115504 target fitness: 2.397069 stddevs: 0.516244 target, 0.007361 reference
gold result: 34.954401
| correlation 4289 | 2019-04-20T23-10-33_103700000_brmlab | 2019-04-20T23-10-33_103700000_brevnov |
|---|
| gain | [6, 6, 6, 1] | [7, 7, 7, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -64.254 stddev = 0.005 reference, 1.577 target [samples]; known correct: -65.518 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_brmlab <--> 2019-04-20T23-10-33_103700000_brevnov (pass 1)
reference error = 0.346987 ppm, target error = 0.025114 ppm
Measured dist: -63.724084 target fitness: 1.695357 stddevs: 2.040406 target, 0.094202 reference
gold result: -65.518301
2019-04-20T23-10-33_103700000_brmlab <--> 2019-04-20T23-10-33_103700000_brevnov (pass 2)
snr: 33.5 27.7 dB
reference error = -0.011536 ppm, target error = -0.036625 ppm
Measured dist: -64.254136 target fitness: 1.698083 stddevs: 1.577111 target, 0.005198 reference
gold result: -65.518301
| correlation 4290 | 2019-04-20T23-10-33_103700000_brmlab | 2019-04-20T23-10-33_103700000_luna |
|---|
| gain | [6, 6, 6, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -4.996 stddev = 0.011 reference, 0.469 target [samples]; known correct: -6.929 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_brmlab <--> 2019-04-20T23-10-33_103700000_luna (pass 1)
reference error = 0.707390 ppm, target error = 0.011993 ppm
Measured dist: -3.425755 target fitness: 2.486794 stddevs: 2.967850 target, 0.191185 reference
gold result: -6.929450
2019-04-20T23-10-33_103700000_brmlab <--> 2019-04-20T23-10-33_103700000_luna (pass 2)
snr: 34.1 22.2 dB
reference error = -0.034429 ppm, target error = -0.063983 ppm
Measured dist: -4.996376 target fitness: 2.489684 stddevs: 0.468869 target, 0.010827 reference
gold result: -6.929450
| correlation 4291 | 2019-04-20T23-10-33_103700000_brevnov | 2019-04-20T23-10-33_103700000_luna |
|---|
| gain | [7, 7, 7, 1] | [12, 12, 12, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 103700000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 58.700 stddev = 0.006 reference, 1.654 target [samples]; known correct: 58.589 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-10-33_103700000_brevnov <--> 2019-04-20T23-10-33_103700000_luna (pass 1)
reference error = 0.336665 ppm, target error = 0.104572 ppm
Measured dist: 59.270926 target fitness: 1.663624 stddevs: 2.179734 target, 0.091118 reference
gold result: 58.588851
2019-04-20T23-10-33_103700000_brevnov <--> 2019-04-20T23-10-33_103700000_luna (pass 2)
snr: 27.7 22.2 dB
reference error = -0.011399 ppm, target error = 0.150937 ppm
Measured dist: 58.699789 target fitness: 1.671994 stddevs: 1.653875 target, 0.006493 reference
gold result: 58.588851
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
