TDOA measurements at 1458096 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 4304	2019-04-20T23-20-06_1458096000_pankrac	2019-04-20T23-20-06_1458096000_luna
gain	[10, 10, 10, 1]	[15, 15, 15, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1458096000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	16.273 stddev = 0.007 reference, 0.086 target [samples]; known correct: 15.836

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T23-20-06_1458096000_pankrac <--> 2019-04-20T23-20-06_1458096000_luna    (pass 1)
reference error = 0.292699 ppm, target error = 0.233944 ppm
Measured dist: 16.325109    target fitness: 2.727449  stddevs: 59.558586 target, 0.079082 reference
gold result: 15.836457

2019-04-20T23-20-06_1458096000_pankrac <--> 2019-04-20T23-20-06_1458096000_luna    (pass 2)
snr: 3.3 6.0 dB
reference error = -0.011953 ppm, target error = -0.017417 ppm
Measured dist: 16.272517    target fitness: 7.054195  stddevs: 0.085648 target, 0.007208 reference
gold result: 15.836457

correlation 4305	2019-04-20T23-20-06_1458096000_pankrac	2019-04-20T23-20-06_1458096000_brmlab
gain	[10, 10, 10, 1]	[10, 10, 10, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1458096000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	27.947 stddev = 0.008 reference, 0.335 target [samples]; known correct: 27.728

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T23-20-06_1458096000_pankrac <--> 2019-04-20T23-20-06_1458096000_brmlab    (pass 1)
reference error = -0.360287 ppm, target error = -0.033259 ppm
Measured dist: 93.709907    target fitness: 2.708356  stddevs: 71.965637 target, 0.098352 reference
gold result: 27.728272

2019-04-20T23-20-06_1458096000_pankrac <--> 2019-04-20T23-20-06_1458096000_brmlab    (pass 2)
snr: 3.3 4.7 dB
reference error = -0.026374 ppm, target error = -0.028112 ppm
Measured dist: 27.946900    target fitness: 6.641762  stddevs: 0.334900 target, 0.008265 reference
gold result: 27.728272

correlation 4306	2019-04-20T23-20-06_1458096000_pankrac	2019-04-20T23-20-06_1458096000_brevnov
gain	[10, 10, 10, 1]	[13, 13, 13, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1458096000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	-38.679 stddev = 0.004 reference, 0.047 target [samples]; known correct: -38.660

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T23-20-06_1458096000_pankrac <--> 2019-04-20T23-20-06_1458096000_brevnov    (pass 1)
reference error = -0.030383 ppm, target error = -0.038434 ppm
Measured dist: -38.679310    target fitness: 11.230580  stddevs: 0.070480 target, 0.009498 reference
gold result: -38.660396

2019-04-20T23-20-06_1458096000_pankrac <--> 2019-04-20T23-20-06_1458096000_brevnov    (pass 2)
snr: 3.3 11.4 dB
reference error = 0.000880 ppm, target error = -0.006861 ppm
Measured dist: -38.679015    target fitness: 11.664045  stddevs: 0.047462 target, 0.004473 reference
gold result: -38.660396

correlation 4307	2019-04-20T23-20-06_1458096000_luna	2019-04-20T23-20-06_1458096000_brmlab
gain	[15, 15, 15, 1]	[10, 10, 10, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1458096000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	11.635 stddev = 0.012 reference, 0.074 target [samples]; known correct: 11.892

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T23-20-06_1458096000_luna <--> 2019-04-20T23-20-06_1458096000_brmlab    (pass 1)
reference error = -0.700585 ppm, target error = -0.234609 ppm
Measured dist: 11.870705    target fitness: 2.683226  stddevs: 67.208023 target, 0.191779 reference
gold result: 11.891815

2019-04-20T23-20-06_1458096000_luna <--> 2019-04-20T23-20-06_1458096000_brmlab    (pass 2)
snr: 6.0 4.4 dB
reference error = 0.035117 ppm, target error = 0.034452 ppm
Measured dist: 11.634960    target fitness: 9.266325  stddevs: 0.074329 target, 0.011549 reference
gold result: 11.891815

correlation 4308	2019-04-20T23-20-06_1458096000_luna	2019-04-20T23-20-06_1458096000_brevnov
gain	[15, 15, 15, 1]	[13, 13, 13, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1458096000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	-55.046 stddev = 0.010 reference, 0.056 target [samples]; known correct: -54.497

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T23-20-06_1458096000_luna <--> 2019-04-20T23-20-06_1458096000_brevnov    (pass 1)
reference error = -0.279945 ppm, target error = -0.314579 ppm
Measured dist: -55.034216    target fitness: 4.265718  stddevs: 0.734697 target, 0.077888 reference
gold result: -54.496853

2019-04-20T23-20-06_1458096000_luna <--> 2019-04-20T23-20-06_1458096000_brevnov    (pass 2)
snr: 6.0 11.3 dB
reference error = -0.029385 ppm, target error = -0.036986 ppm
Measured dist: -55.046359    target fitness: 14.030602  stddevs: 0.056223 target, 0.010328 reference
gold result: -54.496853

correlation 4309	2019-04-20T23-20-06_1458096000_brmlab	2019-04-20T23-20-06_1458096000_brevnov
gain	[10, 10, 10, 1]	[13, 13, 13, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1458096000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	-66.521 stddev = 0.006 reference, 0.044 target [samples]; known correct: -66.389

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T23-20-06_1458096000_brmlab <--> 2019-04-20T23-20-06_1458096000_brevnov    (pass 1)
reference error = 0.368740 ppm, target error = 0.314528 ppm
Measured dist: -66.540523    target fitness: 2.807624  stddevs: 59.473156 target, 0.101534 reference
gold result: -66.388668

2019-04-20T23-20-06_1458096000_brmlab <--> 2019-04-20T23-20-06_1458096000_brevnov    (pass 2)
snr: 4.7 11.3 dB
reference error = -0.015381 ppm, target error = -0.024822 ppm
Measured dist: -66.520638    target fitness: 13.848742  stddevs: 0.043932 target, 0.005637 reference
gold result: -66.388668

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