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 4268 | 2019-04-20T23-02-33_97200000_pankrac | 2019-04-20T23-02-33_97200000_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 | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -16.603 stddev = 0.006 reference, 0.422 target [samples]; known correct: -16.483 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_brmlab (pass 1)
reference error = -0.376870 ppm, target error = -0.027432 ppm
Measured dist: -16.218599 target fitness: 2.331386 stddevs: 2.181037 target, 0.101727 reference
gold result: -16.482538
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_brmlab (pass 2)
snr: 35.7 50.9 dB
reference error = 0.014050 ppm, target error = 0.004475 ppm
Measured dist: -16.602895 target fitness: 2.338812 stddevs: 0.421508 target, 0.005506 reference
gold result: -16.482538
| correlation 4269 | 2019-04-20T23-02-33_97200000_pankrac | 2019-04-20T23-02-33_97200000_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 | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -73.179 stddev = 0.012 reference, 0.506 target [samples]; known correct: -71.538 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_luna (pass 1)
reference error = 0.248548 ppm, target error = 0.029210 ppm
Measured dist: -73.012277 target fitness: 2.608453 stddevs: 1.593932 target, 0.068816 reference
gold result: -71.538394
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_luna (pass 2)
snr: 35.7 48.2 dB
reference error = 0.034007 ppm, target error = -0.007113 ppm
Measured dist: -73.179179 target fitness: 2.608684 stddevs: 0.505993 target, 0.012486 reference
gold result: -71.538394
| correlation 4270 | 2019-04-20T23-02-33_97200000_pankrac | 2019-04-20T23-02-33_97200000_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 | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -26.910 stddev = 0.004 reference, 0.573 target [samples]; known correct: -28.778 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_brevnov (pass 1)
reference error = -0.021478 ppm, target error = -0.040315 ppm
Measured dist: -26.895777 target fitness: 2.366998 stddevs: 0.583409 target, 0.007330 reference
gold result: -28.778373
2019-04-20T23-02-33_97200000_pankrac <--> 2019-04-20T23-02-33_97200000_brevnov (pass 2)
snr: 35.7 57.3 dB
reference error = 0.002463 ppm, target error = -0.016435 ppm
Measured dist: -26.909620 target fitness: 2.366026 stddevs: 0.573109 target, 0.004256 reference
gold result: -28.778373
| correlation 4271 | 2019-04-20T23-02-33_97200000_brmlab | 2019-04-20T23-02-33_97200000_luna |
|---|
| gain | [3, 3, 3, 1] | [8, 8, 8, 1] |
| samplerate | 2250000 | 2250000 Hz |
| histogram | ref: tgt: | ref: tgt: |
| ref. spectrum |  |  |
| tgt. spectrum |  |  |
| tgt. filtered |  |  |
| target_freq | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -56.556 stddev = 0.010 reference, 0.485 target [samples]; known correct: -55.056 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_brmlab <--> 2019-04-20T23-02-33_97200000_luna (pass 1)
reference error = 0.646764 ppm, target error = -0.002304 ppm
Measured dist: -58.605110 target fitness: 2.446005 stddevs: 3.801033 target, 0.176822 reference
gold result: -55.055856
2019-04-20T23-02-33_97200000_brmlab <--> 2019-04-20T23-02-33_97200000_luna (pass 2)
snr: 50.2 48.2 dB
reference error = -0.002428 ppm, target error = -0.046541 ppm
Measured dist: -56.555891 target fitness: 2.463221 stddevs: 0.484615 target, 0.009643 reference
gold result: -55.055856
| correlation 4272 | 2019-04-20T23-02-33_97200000_brmlab | 2019-04-20T23-02-33_97200000_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 | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | -10.247 stddev = 0.004 reference, 0.489 target [samples]; known correct: -12.296 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_brmlab <--> 2019-04-20T23-02-33_97200000_brevnov (pass 1)
reference error = 0.346559 ppm, target error = 0.050156 ppm
Measured dist: -11.088479 target fitness: 2.335078 stddevs: 2.032379 target, 0.094311 reference
gold result: -12.295835
2019-04-20T23-02-33_97200000_brmlab <--> 2019-04-20T23-02-33_97200000_brevnov (pass 2)
snr: 50.8 57.3 dB
reference error = -0.005191 ppm, target error = -0.030664 ppm
Measured dist: -10.247423 target fitness: 2.330653 stddevs: 0.488651 target, 0.004380 reference
gold result: -12.295835
| correlation 4273 | 2019-04-20T23-02-33_97200000_luna | 2019-04-20T23-02-33_97200000_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 | 97200000 Hz |
| reference | DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz |
| result | 46.091 stddev = 0.009 reference, 0.137 target [samples]; known correct: 42.760 |
| Waterfall 1 | Correlation function | Waterfall 2 |
|---|
 |
|
 |
Correlator log
2019-04-20T23-02-33_97200000_luna <--> 2019-04-20T23-02-33_97200000_brevnov (pass 1)
reference error = -0.318689 ppm, target error = -0.047218 ppm
Measured dist: 46.513874 target fitness: 2.385625 stddevs: 1.765464 target, 0.086979 reference
gold result: 42.760020
2019-04-20T23-02-33_97200000_luna <--> 2019-04-20T23-02-33_97200000_brevnov (pass 2)
snr: 48.2 57.3 dB
reference error = 0.018673 ppm, target error = 0.006061 ppm
Measured dist: 46.090553 target fitness: 2.388639 stddevs: 0.136743 target, 0.009298 reference
gold result: 42.760020
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
