TDOA measurements at 99300 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 4448	2019-04-21T00-34-31_98300000_pankrac	2019-04-21T00-34-31_98300000_brevnov
gain	[6, 6, 6, 1]	[3, 3, 3, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	98300000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	-34.519 stddev = 0.004 reference, 1.286 target [samples]; known correct: -34.387

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-21T00-34-31_98300000_pankrac <--> 2019-04-21T00-34-31_98300000_brevnov    (pass 1)
reference error = -0.009167 ppm, target error = 0.072779 ppm
Measured dist: -34.556501    target fitness: 1.162859  stddevs: 1.316475 target, 0.004652 reference
gold result: -34.387361

2019-04-21T00-34-31_98300000_pankrac <--> 2019-04-21T00-34-31_98300000_brevnov    (pass 2)
snr: 35.4 41.7 dB
reference error = -0.003346 ppm, target error = 0.061735 ppm
Measured dist: -34.519087    target fitness: 1.161819  stddevs: 1.285597 target, 0.003894 reference
gold result: -34.387361

correlation 4449	2019-04-21T00-34-31_98300000_pankrac	2019-04-21T00-34-31_98300000_luna
gain	[6, 6, 6, 1]	[9, 9, 9, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	98300000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	11.635 stddev = 0.006 reference, 1.446 target [samples]; known correct: 12.168

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-21T00-34-31_98300000_pankrac <--> 2019-04-21T00-34-31_98300000_luna    (pass 1)
reference error = 0.285892 ppm, target error = 0.114582 ppm
Measured dist: 11.135116    target fitness: 1.155763  stddevs: 3.673897 target, 0.078685 reference
gold result: 12.168451

2019-04-21T00-34-31_98300000_pankrac <--> 2019-04-21T00-34-31_98300000_luna    (pass 2)
snr: 35.4 27.3 dB
reference error = 0.006682 ppm, target error = 0.042965 ppm
Measured dist: 11.634501    target fitness: 1.153202  stddevs: 1.446120 target, 0.006152 reference
gold result: 12.168451

correlation 4450	2019-04-21T00-34-31_98300000_pankrac	2019-04-21T00-34-31_98300000_brmlab
gain	[6, 6, 6, 1]	[4, 4, 4, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	98300000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	25.957 stddev = 0.005 reference, 1.642 target [samples]; known correct: 24.029

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-21T00-34-31_98300000_pankrac <--> 2019-04-21T00-34-31_98300000_brmlab    (pass 1)
reference error = -0.377324 ppm, target error = -0.036038 ppm
Measured dist: 25.170402    target fitness: 1.148198  stddevs: 5.054068 target, 0.104130 reference
gold result: 24.028855

2019-04-21T00-34-31_98300000_pankrac <--> 2019-04-21T00-34-31_98300000_brmlab    (pass 2)
snr: 35.3 36.7 dB
reference error = 0.009926 ppm, target error = -0.063587 ppm
Measured dist: 25.956685    target fitness: 1.152356  stddevs: 1.642175 target, 0.004967 reference
gold result: 24.028855

correlation 4451	2019-04-21T00-34-31_98300000_brevnov	2019-04-21T00-34-31_98300000_luna
gain	[3, 3, 3, 1]	[9, 9, 9, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	98300000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	45.419 stddev = 0.009 reference, 1.441 target [samples]; known correct: 46.556

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-21T00-34-31_98300000_brevnov <--> 2019-04-21T00-34-31_98300000_luna    (pass 1)
reference error = 0.279550 ppm, target error = 0.049897 ppm
Measured dist: 46.022594    target fitness: 1.177238  stddevs: 4.059405 target, 0.076914 reference
gold result: 46.555812

2019-04-21T00-34-31_98300000_brevnov <--> 2019-04-21T00-34-31_98300000_luna    (pass 2)
snr: 41.8 27.3 dB
reference error = 0.022549 ppm, target error = 0.001189 ppm
Measured dist: 45.418738    target fitness: 1.166852  stddevs: 1.441482 target, 0.008927 reference
gold result: 46.555812

correlation 4452	2019-04-21T00-34-31_98300000_brevnov	2019-04-21T00-34-31_98300000_brmlab
gain	[3, 3, 3, 1]	[4, 4, 4, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	98300000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	59.836 stddev = 0.006 reference, 1.517 target [samples]; known correct: 58.416

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-21T00-34-31_98300000_brevnov <--> 2019-04-21T00-34-31_98300000_brmlab    (pass 1)
reference error = -0.341513 ppm, target error = -0.126812 ppm
Measured dist: 59.865910    target fitness: 1.157227  stddevs: 4.704823 target, 0.093774 reference
gold result: 58.416216

2019-04-21T00-34-31_98300000_brevnov <--> 2019-04-21T00-34-31_98300000_brmlab    (pass 2)
snr: 41.8 37.0 dB
reference error = -0.016297 ppm, target error = -0.097454 ppm
Measured dist: 59.836160    target fitness: 1.170894  stddevs: 1.517074 target, 0.005932 reference
gold result: 58.416216

correlation 4453	2019-04-21T00-34-31_98300000_luna	2019-04-21T00-34-31_98300000_brmlab
gain	[9, 9, 9, 1]	[4, 4, 4, 1]
samplerate	2250000	2250000 Hz
histogram	ref: tgt:	ref: tgt:
ref. spectrum
tgt. spectrum
tgt. filtered
target_freq	98300000 Hz
reference	DAB Final Lic: VYSÍLACÍ SÍŤ A, PRAHA MESTO, 227360 kHz
result	13.561 stddev = 0.007 reference, 1.690 target [samples]; known correct: 11.860

Waterfall 1	Correlation function	Waterfall 2

Correlator log

2019-04-21T00-34-31_98300000_luna <--> 2019-04-21T00-34-31_98300000_brmlab    (pass 1)
reference error = -0.660984 ppm, target error = -0.167246 ppm
Measured dist: 14.018675    target fitness: 1.155469  stddevs: 21.153900 target, 0.181199 reference
gold result: 11.860404

2019-04-21T00-34-31_98300000_luna <--> 2019-04-21T00-34-31_98300000_brmlab    (pass 2)
snr: 27.3 38.5 dB
reference error = 0.003057 ppm, target error = 0.068742 ppm
Measured dist: 13.560725    target fitness: 1.152219  stddevs: 1.690211 target, 0.006990 reference
gold result: 11.860404

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