TDOA measurements at 88200 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 3878 | 2019-04-20T20-22-37_88200000_pankrac | 2019-04-20T20-22-37_88200000_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 | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 22.076 stddev = 0.006 reference, 0.996 target [samples]; known correct: 24.029 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_brmlab (pass 1)
reference error = -0.391468 ppm, target error = -0.140299 ppm
Measured dist: 21.559726 target fitness: 1.360138 stddevs: 2.563981 target, 0.106856 reference
gold result: 24.028855
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_brmlab (pass 2)
snr: 57.0 42.4 dB
reference error = 0.018132 ppm, target error = -0.167970 ppm
Measured dist: 22.075879 target fitness: 1.357433 stddevs: 0.995528 target, 0.006459 reference
gold result: 24.028855
| correlation 3879 | 2019-04-20T20-22-37_88200000_pankrac | 2019-04-20T20-22-37_88200000_luna |
|---|
| gain | [7, 7, 7, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref:  tgt:  |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 11.685 stddev = 0.017 reference, 0.378 target [samples]; known correct: 12.168 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_luna (pass 1)
reference error = 0.264762 ppm, target error = 0.181350 ppm
Measured dist: 12.057998 target fitness: 1.332401 stddevs: 1.802851 target, 0.074417 reference
gold result: 12.168451
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_luna (pass 2)
snr: 57.0 31.9 dB
reference error = 0.033944 ppm, target error = 0.022664 ppm
Measured dist: 11.684951 target fitness: 1.332082 stddevs: 0.377955 target, 0.017035 reference
gold result: 12.168451
| correlation 3880 | 2019-04-20T20-22-37_88200000_pankrac | 2019-04-20T20-22-37_88200000_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 | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -37.176 stddev = 0.005 reference, 0.496 target [samples]; known correct: -34.387 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_brevnov (pass 1)
reference error = -0.102369 ppm, target error = -0.112590 ppm
Measured dist: -37.282760 target fitness: 1.418077 stddevs: 0.812714 target, 0.028258 reference
gold result: -34.387361
2019-04-20T20-22-37_88200000_pankrac <--> 2019-04-20T20-22-37_88200000_brevnov (pass 2)
snr: 57.0 58.2 dB
reference error = 0.006613 ppm, target error = -0.029098 ppm
Measured dist: -37.176103 target fitness: 1.423184 stddevs: 0.495644 target, 0.004534 reference
gold result: -34.387361
| correlation 3881 | 2019-04-20T20-22-37_88200000_brmlab | 2019-04-20T20-22-37_88200000_luna |
|---|
| gain | [4, 4, 4, 1] | [11, 11, 11, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -10.403 stddev = 0.015 reference, 1.175 target [samples]; known correct: -11.860 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_brmlab <--> 2019-04-20T20-22-37_88200000_luna (pass 1)
reference error = 0.692678 ppm, target error = 0.160162 ppm
Measured dist: -9.587188 target fitness: 1.350010 stddevs: 4.379913 target, 0.191149 reference
gold result: -11.860404
2019-04-20T20-22-37_88200000_brmlab <--> 2019-04-20T20-22-37_88200000_luna (pass 2)
snr: 40.9 31.9 dB
reference error = -0.022421 ppm, target error = 0.238329 ppm
Measured dist: -10.402924 target fitness: 1.355188 stddevs: 1.175027 target, 0.015000 reference
gold result: -11.860404
| correlation 3882 | 2019-04-20T20-22-37_88200000_brmlab | 2019-04-20T20-22-37_88200000_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 | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -59.599 stddev = 0.007 reference, 0.419 target [samples]; known correct: -58.416 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_brmlab <--> 2019-04-20T20-22-37_88200000_brevnov (pass 1)
reference error = 0.263281 ppm, target error = 0.169526 ppm
Measured dist: -59.176090 target fitness: 1.481810 stddevs: 1.654204 target, 0.072317 reference
gold result: -58.416216
2019-04-20T20-22-37_88200000_brmlab <--> 2019-04-20T20-22-37_88200000_brevnov (pass 2)
snr: 42.2 58.2 dB
reference error = 0.018931 ppm, target error = 0.051533 ppm
Measured dist: -59.599060 target fitness: 1.481651 stddevs: 0.419119 target, 0.006622 reference
gold result: -58.416216
| correlation 3883 | 2019-04-20T20-22-37_88200000_luna | 2019-04-20T20-22-37_88200000_brevnov |
|---|
| gain | [11, 11, 11, 1] | [4, 4, 4, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 88200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -49.050 stddev = 0.015 reference, 0.814 target [samples]; known correct: -46.556 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T20-22-37_88200000_luna <--> 2019-04-20T20-22-37_88200000_brevnov (pass 1)
reference error = -0.415260 ppm, target error = -0.180246 ppm
Measured dist: -49.496476 target fitness: 1.434955 stddevs: 2.460310 target, 0.114608 reference
gold result: -46.555812
2019-04-20T20-22-37_88200000_luna <--> 2019-04-20T20-22-37_88200000_brevnov (pass 2)
snr: 31.9 58.1 dB
reference error = 0.022660 ppm, target error = -0.108993 ppm
Measured dist: -49.049534 target fitness: 1.437047 stddevs: 0.813515 target, 0.014713 reference
gold result: -46.555812
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
