TDOA measurements at 1466656 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 4208	2019-04-20T22-28-07_1466656000_pankrac	2019-04-20T22-28-07_1466656000_luna
gain	[15, 15, 15, 1]	[15, 15, 15, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1466656000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	0.507 stddev = 0.008 reference, 0.981 target [samples]; known correct: 0.000

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T22-28-07_1466656000_pankrac <--> 2019-04-20T22-28-07_1466656000_luna    (pass 1)
reference error = 0.291316 ppm, target error = 0.226034 ppm
Measured dist: 0.583378    target fitness: 2.651361  stddevs: 68.489937 target, 0.079809 reference
gold result: -0.000000

2019-04-20T22-28-07_1466656000_pankrac <--> 2019-04-20T22-28-07_1466656000_luna    (pass 2)
snr: 3.5 12.2 dB
reference error = 0.007939 ppm, target error = -0.000238 ppm
Measured dist: 0.506693    target fitness: 3.571219  stddevs: 0.980903 target, 0.007518 reference
gold result: -0.000000

correlation 4209	2019-04-20T22-28-07_1466656000_pankrac	2019-04-20T22-28-07_1466656000_brmlab
gain	[15, 15, 15, 1]	[14, 14, 14, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1466656000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	0.567 stddev = 0.006 reference, 0.176 target [samples]; known correct: 0.000

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T22-28-07_1466656000_pankrac <--> 2019-04-20T22-28-07_1466656000_brmlab    (pass 1)
reference error = -0.393817 ppm, target error = 0.167138 ppm
Measured dist: 126.695059    target fitness: 2.621842  stddevs: 70.092796 target, 0.107977 reference
gold result: -0.000000

2019-04-20T22-28-07_1466656000_pankrac <--> 2019-04-20T22-28-07_1466656000_brmlab    (pass 2)
snr: 3.4 12.2 dB
reference error = 0.018372 ppm, target error = 0.016083 ppm
Measured dist: 0.567420    target fitness: 4.798507  stddevs: 0.176114 target, 0.006433 reference
gold result: -0.000000

correlation 4210	2019-04-20T22-28-07_1466656000_pankrac	2019-04-20T22-28-07_1466656000_brevnov
gain	[15, 15, 15, 1]	[14, 14, 14, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1466656000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	0.419 stddev = 0.004 reference, 0.218 target [samples]; known correct: 0.000

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T22-28-07_1466656000_pankrac <--> 2019-04-20T22-28-07_1466656000_brevnov    (pass 1)
reference error = -0.030317 ppm, target error = -0.029742 ppm
Measured dist: 0.419684    target fitness: 3.856110  stddevs: 3.340301 target, 0.009370 reference
gold result: -0.000000

2019-04-20T22-28-07_1466656000_pankrac <--> 2019-04-20T22-28-07_1466656000_brevnov    (pass 2)
snr: 3.4 10.9 dB
reference error = 0.002247 ppm, target error = 0.002580 ppm
Measured dist: 0.419288    target fitness: 4.063397  stddevs: 0.217665 target, 0.004392 reference
gold result: -0.000000

correlation 4211	2019-04-20T22-28-07_1466656000_luna	2019-04-20T22-28-07_1466656000_brmlab
gain	[15, 15, 15, 1]	[14, 14, 14, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1466656000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	0.110 stddev = 0.013 reference, 0.074 target [samples]; known correct: 0.000

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T22-28-07_1466656000_luna <--> 2019-04-20T22-28-07_1466656000_brmlab    (pass 1)
reference error = -0.715667 ppm, target error = -0.662510 ppm
Measured dist: 0.094266    target fitness: 5.967146  stddevs: 0.901885 target, 0.195976 reference
gold result: -0.000000

2019-04-20T22-28-07_1466656000_luna <--> 2019-04-20T22-28-07_1466656000_brmlab    (pass 2)
snr: 12.2 10.8 dB
reference error = 0.036679 ppm, target error = 0.053024 ppm
Measured dist: 0.110360    target fitness: 29.861718  stddevs: 0.073636 target, 0.013220 reference
gold result: -0.000000

correlation 4212	2019-04-20T22-28-07_1466656000_luna	2019-04-20T22-28-07_1466656000_brevnov
gain	[15, 15, 15, 1]	[14, 14, 14, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1466656000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	-0.245 stddev = 0.008 reference, 0.025 target [samples]; known correct: 0.000

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T22-28-07_1466656000_luna <--> 2019-04-20T22-28-07_1466656000_brevnov    (pass 1)
reference error = -0.333686 ppm, target error = -0.317241 ppm
Measured dist: -0.225043    target fitness: 9.774234  stddevs: 0.433549 target, 0.092834 reference
gold result: -0.000000

2019-04-20T22-28-07_1466656000_luna <--> 2019-04-20T22-28-07_1466656000_brevnov    (pass 2)
snr: 12.2 10.9 dB
reference error = 0.009568 ppm, target error = 0.015810 ppm
Measured dist: -0.245496    target fitness: 23.484937  stddevs: 0.024768 target, 0.007700 reference
gold result: -0.000000

correlation 4213	2019-04-20T22-28-07_1466656000_brmlab	2019-04-20T22-28-07_1466656000_brevnov
gain	[14, 14, 14, 1]	[14, 14, 14, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	1466656000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	-0.242 stddev = 0.005 reference, 0.017 target [samples]; known correct: 0.000

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-20T22-28-07_1466656000_brmlab <--> 2019-04-20T22-28-07_1466656000_brevnov    (pass 1)
reference error = 0.357470 ppm, target error = 0.345068 ppm
Measured dist: -0.238082    target fitness: 7.534049  stddevs: 0.475078 target, 0.098619 reference
gold result: -0.000000

2019-04-20T22-28-07_1466656000_brmlab <--> 2019-04-20T22-28-07_1466656000_brevnov    (pass 2)
snr: 12.1 10.9 dB
reference error = -0.010375 ppm, target error = -0.010874 ppm
Measured dist: -0.241908    target fitness: 30.173043  stddevs: 0.017254 target, 0.005041 reference
gold result: -0.000000

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