Observation record.Satnogs-UHF.2021-04-13T08-59-00

Ground-station Satnogs-UHF
Owner N5CNB

Waterfall
DopplerComparaison
PostProcessing

Résumé de l'événement

satellite FALCONSAT-3
date 2021-04-13
time 08:59:00
duration 380
freq 4.35103e+08
culm 32.1718

Waterfall

The graph at the bottom left gives the waterfall (time on the abscissa, frequency on the ordinate). The graph at the top gives the integrated signal strength in frequency as a function of time. At the bottom right, the average of the spectra over all the measurement times (frequency on the ordinate).

The time range of the measurement is given in the top right part (minimum_time, maximum_time). The frequency range determined by the number of points used by the Fourier transform is given by fmin and fmax. The units used for power (or the energy received in each time slot) could not be determined.

transitfile record.Satnogs-UHF.2021-04-13T08-59-00.transit

Additional capture data

The beginning of the transit is marked by a circle and the end of the transit by a disc.

paramètres prévus
filename record.Satnogs-UHF.2021-04-13T08-59-00
satellite FALCONSAT-3
date 2021-04-13
time 08:59:00
samp 250000
duration 380
freq 4.35103e+08
culm 32.1718
paramètres réalisés
recfile record.Satnogs-UHF.2021-04-13T08-59-00.dat
start 2021-04-13T08:59:00
end 2021-04-13T09:05:22
freq 4.35103e+08
gain 48
ns 380
samp 250000
nsamp 95000000

Gaussian fit

When the intensity of the signal as a function of time follows an approximately Gaussian law, this tool must capture approximately the parameters by non-linear adjustment. The adjustment is carried out using the NLOPT2 library. The behavior is undefined if the law is arbitrary.

abscisses: giga-samples name ordinates: sum_20000(I²+Q²)/1e6

Resultats du fit
t0 500000 [ 2 s]
a 1000
sigma 1500000
y0 2000

calpower-stats

Autres statistiques (de la valeur I²+Q²)
moyenne 35.0143
max 102.907
moyenne.debut.fin 30.134
hauteur.signal 72.7732 [ 18.6197 dB ] (max - moyenne.debut.fin)
longueur.totale 380
integrale.signal 1854.51 (somme - moyenne.debut.fin*longueur.totale)

Calculated and measured Doppler comparison

record.Satnogs-UHF.2021-04-13T08-59-00.fft.scattered.df.png

Abscissa: frequency in Hz
Ordinates: time in seconds

sumY2 2.15927e+13
sumDy2 1.07361e+13
dfmin 8.55438 sumDy2 1.0736e+13
dtmin 1.93788 sumDy2 1.07234e+13

* Kepler element data for FALCONSAT-3

name ‘FALCONSAT-3’
satellite_number 30776
central_object EARTH
ephemeris_type UnknownEphemerisType
epoch_year 21
epoch_day 101.61184069

Kepler elements
epoch_julday 2459316.11184069
Time jd 2459316.11184 < 2021-04-11 14:41:03.0035 UTC >
inclination 35.4335 deg [35 26'01"]
right_ascension_of_ascending_node 169.617 deg [11:18:28]
major_radius 6824.6 km
eccentricity 0.0002142
periast_argument 354.899 deg [354 53'56"]
mean_anomaly 5.1717 deg [5 10'18"]
Supplemental data
cc 1.99957169174
ra 6.82606e+06 [455054]
rp 6.82314e+06 [452131]
va 7645.35
vp 7642.07
axb 6826.06 x 6826.06
mammmdt 17.169
bstar 0.2593
mean_motion_1st_deriv 3.756e-05
mean_motion_2nd_deriv 0
mean_motion 15.4014 rev/day 0.0649291 day/rev
periapsis_distance 6823.14 km
apoapsis_distance 6826.06 km
periapsis_mean_height 452.131 km
apoapsis_mean_height 455.054 km
rev_number_at_epoch 78279
tle_age 0.934363 day

* TLE

FALCONSAT-3
1 30776U 07006E 21101.61184069 .00003756 00000-0 92593-4 0 9999
2 30776 35.4335 169.6166 0002142 354.8988 5.1717 15.40142038782799

Spectrum analysis

median 14.0243
noise_level_db 14.1481
min 6.0985
max 41.5196
freq_center -2167.87
trig_level_db 10
nbin_rescaling 29.9957
freq_center_trig -2453.69
signal_range_dB 27.3716
theo_range_dB 48.1648 [ 8 bits ]

Post-processing

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 81
contents =
0000: a8 92 9a 8a 40 40 02 a0 8c a6 66 40 40 03 03 f0
0010: 50 48 54 3a 20 75 70 74 69 6d 65 20 69 73 20 31
0020: 31 34 34 2f 31 31 3a 35 39 3a 34 34 2e 20 20 54
0030: 69 6d 65 20 69 73 20 54 75 65 20 41 70 72 20 31
0040: 33 20 31 30 3a 32 37 3a 34 33 20 32 30 32 31 0d
0050: 20

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 62
contents =
0000: 98 a6 a8 82 a8 40 00 a0 8c a6 66 40 40 03 03 f0
0010: 49 20 50 3a 30 78 31 33 41 38 20 6f 3a 30 20 6c
0020: 3a 33 31 33 36 37 20 66 3a 33 31 34 34 39 2c 20
0030: 64 3a 31 20 73 74 3a 34 20 65 3a 30 65 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: a0 84 98 92 a6 a8 00 a0 8c a6 66 40 40 17 03 f0
0010: 50 42 3a 20 45 6d 70 74 79 2e 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: a0 84 98 92 a6 a8 00 a0 8c a6 66 40 40 17 03 f0
0010: 50 42 3a 20 45 6d 70 74 79 2e 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: 84 84 a6 a8 82 a8 00 a0 8c a6 66 40 40 19 03 f0
0010: 4f 70 65 6e 20 41 42 43 44 3a 20

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 29
contents =
0000: a6 a8 82 a8 aa a6 00 a0 8c a6 66 40 40 17 03 f0
0010: 42 3a 20 37 33 32 35 30 30 35 31 39 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 81
contents =
0000: a8 92 9a 8a 40 40 02 a0 8c a6 66 40 40 03 03 f0
0010: 50 48 54 3a 20 75 70 74 69 6d 65 20 69 73 20 31
0020: 31 34 34 2f 31 31 3a 35 39 3a 35 32 2e 20 20 54
0030: 69 6d 65 20 69 73 20 54 75 65 20 41 70 72 20 31
0040: 33 20 31 30 3a 32 37 3a 35 31 20 32 30 32 31 0d
0050: 20

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 62
contents =
0000: 98 a6 a8 82 a8 40 00 a0 8c a6 66 40 40 03 03 f0
0010: 49 20 50 3a 30 78 31 33 41 38 20 6f 3a 30 20 6c
0020: 3a 33 31 33 36 37 20 66 3a 33 31 34 34 39 2c 20
0030: 64 3a 31 20 73 74 3a 34 20 65 3a 30 65 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 24
contents =
0000: 9c 70 9a 90 40 40 00 a0 8c a6 66 40 40 17 03 bb
0010: 4f 4b 20 4e 38 4d 48 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: a0 84 98 92 a6 a8 00 a0 8c a6 66 40 40 17 03 f0
0010: 50 42 3a 20 4e 38 4d 48 5c 44 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 115
contents =
0000: a2 a6 a8 40 40 40 02 a0 8c a6 66 40 40 17 03 bd
0010: 20 08 4f 00 00 00 00 00 00 35 57 75 60 44 65 75
0020: 60 aa 55 01 00 04 08 4f 00 00 02 00 08 77 65 30
0030: 34 31 33 30 32 03 00 03 20 20 20 04 00 04 3f 13
0040: 00 00 05 00 04 4a 3b 75 60 06 00 04 e0 5b 75 60
0050: 12 00 04 e0 5b 75 60 07 00 01 00 08 00 01 03 09
0060: 00 02 0b 48 0a 00 02 a9 0a 0b 00 02 50 00 00 00
0070: 00 a0 cc

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 115
contents =
0000: a2 a6 a8 40 40 40 02 a0 8c a6 66 40 40 17 03 bd
0010: 20 03 4f 00 00 00 00 00 00 45 65 75 60 26 6e 75
0020: 60 aa 55 01 00 04 03 4f 00 00 02 00 08 42 4c 31
0030: 32 30 34 31 33 03 00 03 20 20 20 04 00 04 0c 03
0040: 00 00 05 00 04 ad e6 74 60 06 00 04 45 65 75 60
0050: 12 00 04 45 65 75 60 07 00 01 00 08 00 01 ca 09
0060: 00 02 87 2a 0a 00 02 24 0b 0b 00 02 50 00 00 00
0070: 00 5b 93

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 115
contents =
0000: a2 a6 a8 40 40 40 02 a0 8c a6 66 40 40 17 03 bd
0010: 60 02 4f 00 00 00 00 00 00 27 6e 75 60 27 6e 75
0020: 60 aa 55 01 00 04 02 4f 00 00 02 00 08 41 4c 31
0030: 32 30 34 31 33 03 00 03 20 20 20 04 00 04 ee 10
0040: 00 00 05 00 04 94 e3 74 60 06 00 04 28 6e 75 60
0050: 12 00 04 27 6e 75 60 07 00 01 00 08 00 01 c9 09
0060: 00 02 9a e4 0a 00 02 98 0c 0b 00 02 50 00 00 00
0070: 00 de 4a

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: a0 84 98 92 a6 a8 00 a0 8c a6 66 40 40 17 03 f0
0010: 50 42 3a 20 45 6d 70 74 79 2e 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 81
contents =
0000: a8 92 9a 8a 40 40 02 a0 8c a6 66 40 40 03 03 f0
0010: 50 48 54 3a 20 75 70 74 69 6d 65 20 69 73 20 31
0020: 31 34 34 2f 31 32 3a 30 30 3a 30 39 2e 20 20 54
0030: 69 6d 65 20 69 73 20 54 75 65 20 41 70 72 20 31
0040: 33 20 31 30 3a 32 38 3a 30 38 20 32 30 32 31 0d
0050: 20

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: a0 84 98 92 a6 a8 00 a0 8c a6 66 40 40 17 03 f0
0010: 50 42 3a 20 45 6d 70 74 79 2e 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: a0 84 98 92 a6 a8 00 a0 8c a6 66 40 40 17 03 f0
0010: 50 42 3a 20 45 6d 70 74 79 2e 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 81
contents =
0000: a8 92 9a 8a 40 40 02 a0 8c a6 66 40 40 03 03 f0
0010: 50 48 54 3a 20 75 70 74 69 6d 65 20 69 73 20 31
0020: 31 34 34 2f 31 32 3a 30 30 3a 31 37 2e 20 20 54
0030: 69 6d 65 20 69 73 20 54 75 65 20 41 70 72 20 31
0040: 33 20 31 30 3a 32 38 3a 31 36 20 32 30 32 31 0d
0050: 20

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 62
contents =
0000: 98 a6 a8 82 a8 40 00 a0 8c a6 66 40 40 03 03 f0
0010: 49 20 50 3a 30 78 31 33 41 38 20 6f 3a 30 20 6c
0020: 3a 33 31 33 36 37 20 66 3a 33 31 34 34 39 2c 20
0030: 64 3a 31 20 73 74 3a 34 20 65 3a 30 65 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: a0 84 98 92 a6 a8 00 a0 8c a6 66 40 40 17 03 f0
0010: 50 42 3a 20 45 6d 70 74 79 2e 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 27
contents =
0000: 84 84 a6 a8 82 a8 00 a0 8c a6 66 40 40 19 03 f0
0010: 4f 70 65 6e 20 41 42 43 44 3a 20

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 25
contents =
0000: 96 68 9e b4 a6 40 00 a0 8c a6 66 40 40 17 03 bb
0010: 4f 4b 20 4b 34 4f 5a 53 0d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 271
contents =
0000: a2 a6 a8 40 40 40 02 a0 8c a6 66 40 40 17 03 bb
0010: 02 08 4f 00 00 03 c4 04 00 04 50 07 0a 09 33 09
0020: 75 60 eb 42 a3 04 08 00 10 00 0e 00 14 00 11 00
0030: d7 04 d5 07 83 07 66 09 75 60 15 43 a1 04 09 00
0040: 10 00 0e 00 14 00 11 00 d7 04 38 09 98 06 93 09
0050: 75 60 3f 43 9e 04 09 00 0f 00 0e 00 14 00 11 00
0060: d7 04 cc 0a c8 06 ba 09 75 60 68 43 9c 04 0a 00
0070: 10 00 0e 00 14 00 11 00 d7 04 04 0c 01 08 eb 09
0080: 75 60 92 43 9a 04 09 00 0f 00 0e 00 14 00 11 00
0090: d7 04 51 0c e0 09 26 0a 75 60 bc 43 97 04 09 00
00a0: 10 00 0e 00 14 00 11 00 d7 04 6f 0b 99 0b 70 0a
00b0: 75 60 e6 43 94 04 09 00 10 00 0e 00 14 00 11 00
00c0: d7 04 a5 09 4d 0c c9 0a 75 60 12 44 92 04 08 00
00d0: 10 00 0e 00 14 00 11 00 d8 04 dd 07 81 0b 20 0b
00e0: 75 60 3b 44 8f 04 09 00 0f 00 0e 00 14 00 11 00
00f0: d8 04 11 07 b8 09 60 0b 75 60 64 44 8d 04 09 00
0100: 0f 00 0e 00 14 00 11 00 d8 04 80 07 df 85 5d

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 9k6 FSK downlink))
pdu_length = 271
contents =
0000: a2 a6 a8 40 40 40 02 a0 8c a6 66 40 40 17 03 bb
0010: 02 08 4f 00 00 03 b8 05 00 07 94 0b 75 60 8e 44
0020: 8b 04 09 00 0f 00 0f 00 13 00 11 00 d8 04 e6 08
0030: d2 06 bd 0b 75 60 b7 44 88 04 09 00 0f 00 0e 00
0040: 14 00 11 00 d9 04 7b 0a f9 06 e1 0b 75 60 e0 44
0050: 85 04 09 00 10 00 0e 00 14 00 11 00 d9 04 94 0b
0060: 1c 08 04 0c 75 60 0b 45 83 04 08 00 10 00 0e 00
0070: 14 00 11 00 da 04 be 0b bd 09 34 0c 75 60 35 45
0080: 81 04 09 00 0f 00 0e 00 14 00 11 00 da 04 ec 0a
0090: f9 0a 69 0c 75 60 5f 45 7e 04 09 00 0f 00 0e 00
00a0: 14 00 11 00 db 04 a6 09 41 0b a2 0c 75 60 88 45
00b0: 7c 04 08 00 0f 00 0e 00 14 00 11 00 db 04 aa 08
00c0: 92 0a d2 0c 75 60 b1 45 7a 04 09 00 0f 00 0e 00
00d0: 14 00 11 00 dc 04 71 08 7a 09 f4 0c 75 60 da 45
00e0: 78 04 09 00 0f 00 0e 00 14 00 11 00 dd 04 f0 08
00f0: ab 08 07 0d 75 60 03 46 75 04 09 00 0f 00 0e 00
0100: 14 00 11 00 dd 04 b2 09 8e 08 0e 0d 75 f5 53

number of decodings: 24

Credits

Decodage gr-satellites v3.6.0 (Daniel Estevez)

N5FXH’s page