Observation record.Satnogs-UHF.2020-12-26T18-08-00

Station-sol Satnogs-UHF
Propriétaire N5CNB

Waterfall
ComparaisonDoppler
PostProcessing

Résumé de l'événement

satellite ARMADILLO
date 2020-12-26
time 18:08:00
duration 600
freq 4.37525e+08
culm 73.7688

Waterfall

Le graphique en bas à gauche donne le waterfall (temps en abscisse, fréquence en ordonnée). Le graphique en haut donne la puissance du signal intégrée en fréquence en fonction du temps. En bas à droite moyenne des spectres sur tous les temps de mesure (fréquence en ordonnée).

L'étendue en temps de la mesure est donnée dans la partie en haut à droite (minimum_time, maximum_time). L'étendue en fréquence déterminée par le nombre de points utilisés par la transformée de Fourier est donnée par fmin et fmax. Les unités utilisées pour la puissance (ou l'énergie reçue dans chaque intervalle de temps) n'ont pas pu être déterminées.

transitfile record.Satnogs-UHF.2020-12-26T18-08-00.transit

Données complémentaires de la capture

Le début du transit est marqué par un cercle et la fin du transit par un disque.

paramètres prévus
filename record.Satnogs-UHF.2020-12-26T18-08-00
satellite ARMADILLO
date 2020-12-26
time 18:08:00
samp 250000
duration 600
freq 4.37525e+08
culm 73.7688
paramètres réalisés
recfile record.Satnogs-UHF.2020-12-26T18-08-00.dat
start 2020-12-26T18:08:00
end 2020-12-26T18:18:02
freq 4.37525e+08
gain 48
ns 600
samp 250000
nsamp 150000000

Fit Gaussien

Lorsque l'intensité du signal en fonction du temps suit une loi approximativement Gaussienne, cet outil doit en capturer approximativement les paramètres par ajustement non-linéaire. L'ajustement est réalisé à l'aide de la librairie NLOPT2. Le comportement est indéfini si la loi est quelconque.

abscisses: nombre de giga-samples
ordonnées: sum_20000(I²+Q²)/1e6

Resultats du fit
t0 2388910 [ 9.55564 s]
a 1104270
sigma 0
y0 2177930

calpower-stats

Autres statistiques (de la valeur I²+Q²)
moyenne 8.71171
max 13.5639
moyenne.debut.fin 8.79852
hauteur.signal 4.76534 [ 6.78094 dB ] (max - moyenne.debut.fin)
longueur.totale 600
integrale.signal -52.0823 (somme - moyenne.debut.fin*longueur.totale)

Comparaison Doppler calculé et mesuré

record.Satnogs-UHF.2020-12-26T18-08-00.fft.scattered.df.png

Abscisses: fréquence en Hz
Ordonnées: temps en secondes

sumY2 2.23006e+12
sumDy2 1.13913e+12
dfmin -1211.73 sumDy2 1.02468e+12
dtmin -5.37522 sumDy2 1.0164e+12

* Kepler element data for ARMADILLO

name ‘ARMADILLO’
satellite_number 44352
central_object EARTH
ephemeris_type UnknownEphemerisType
epoch_year 20
epoch_day 360.55480652

Kepler elements
epoch_julday 2459209.05480652
Time jd 2459209.05481 < 2020-12-25 13:18:55.0283 UTC >
inclination 28.5292 deg [28 31'45"]
right_ascension_of_ascending_node 195.73 deg [13:02:55]
major_radius 6908.72 km
eccentricity 0.0328299
periast_argument 208.277 deg [208 16'36"]
mean_anomaly 149.9641 deg [149 57'51"]
Supplemental data
cc 1.93642728585
ra 7.13553e+06 [764520]
rp 6.6819e+06 [310895]
va 7850.68
vp 7351.59
axb 7135.53 x 7131.68
mammmdt 167.476
bstar 0.333
mean_motion_1st_deriv 0.00022024
mean_motion_2nd_deriv 0
mean_motion 15.121 rev/day 0.0661332 day/rev
periapsis_distance 6681.9 km
apoapsis_distance 7135.53 km
periapsis_mean_height 310.895 km
apoapsis_mean_height 764.52 km
rev_number_at_epoch 8266
tle_age 0.947601 day

* TLE

ARMADILLO
1 44352U 19036P 20360.55480652 .00022024 00000-0 30333-3 0 9998
2 44352 28.5292 195.7304 0328299 208.2767 149.9641 15.12100590 82662

Analyse spectre

median 8.8108
noise_level_db 8.90197
min -0.551071
max 34.9337
freq_center -4526.45
trig_level_db 10
nbin_rescaling 29.9957
freq_center_trig -2827.35
signal_range_dB 26.0317
theo_range_dB 48.1648 [ 8 bits ]

Post-traitement

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 19k2 FSK downlink))
pdu_length = 7
contents =
0000: 00 88 6c a4 a0 a2 28

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 19k2 FSK downlink))
pdu_length = 3
contents =
0000: ba e8 10

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 19k2 FSK downlink))
pdu_length = 272
contents =
0000: ae 90 64 b0 b2 a4 60 96 8a 6a 88 a8 ae e1 03 f0
0010: 08 17 12 fb 01 bf 44 fd 3a 75 da 01 00 00 90 a5
0020: 01 3f 1d 89 c5 49 ea 7a 45 9c 01 45 c5 fb 4d 98
0030: c0 fd f9 b1 c0 30 eb 4b bf 00 e0 40 49 00 3a 00
0040: 2c 01 00 00 01 0c 00 0e 00 0b 00 0b 00 08 00 08
0050: 00 02 00 06 00 06 00 02 00 09 00 04 00 00 00 00
0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00a0: 00 00 47 65 74 74 69 6e 67 20 62 6f 72 65 64 20
00b0: 6f 66 20 73 70 61 63 65 2e 00 00 00 00 00 00 00
00c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 19k2 FSK downlink))
pdu_length = 272
contents =
0000: ae 90 64 b0 b2 a4 60 96 8a 6a 88 a8 ae e1 03 f0
0010: 08 17 12 fb 01 dd 44 fd 3a 93 da 01 00 00 90 a5
0020: 01 49 3c 8c c5 ec 79 73 45 24 01 46 c5 e3 f0 94
0030: c0 ea 00 b5 c0 17 6f 35 bf 00 e0 40 43 00 3a 00
0040: 2c 01 00 00 01 0c 00 0e 00 0b 00 0b 00 08 00 08
0050: 00 02 00 06 00 06 00 02 00 09 00 04 00 00 00 00
0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00a0: 00 00 57 68 61 74 27 73 20 79 6f 75 72 20 66 61
00b0: 76 6f 72 69 74 65 20 74 68 69 6e 67 20 61 62 6f
00c0: 75 74 20 73 70 61 63 65 3f 20 4d 69 6e 65 20 69
00d0: 73 20 73 70 61 63 65 2e 00 00 00 00 00 00 00 00
00e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

MESSAGE DEBUG PRINT PDU VERBOSE *
((transmitter . 19k2 FSK downlink))
pdu_length = 272
contents =
0000: ae 90 64 b0 b2 a4 60 96 8a 6a 88 a8 ae e1 03 f0
0010: 08 17 12 fb 01 19 45 fd 3a cf da 01 00 00 a0 a5
0020: 01 b5 2b 95 c5 a6 6f 5c 45 33 4c 48 c5 8b 6d 8a
0030: c0 a7 79 bd c0 48 36 e3 be 00 e0 40 43 00 3a 00
0040: 2c 01 00 00 01 0c 00 0e 00 0b 00 0b 00 08 00 08
0050: 00 02 00 06 00 06 00 02 00 09 00 04 00 00 00 00
0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00a0: 00 00 49 74 27 73 20 74 6f 6f 20 62 69 67 2e 20
00b0: 54 6f 6f 20 62 69 67 2e 20 57 61 6e 6e 61 20 67
00c0: 6f 20 68 6f 6d 65 2e 20 57 61 6e 6e 61 20 67 6f
00d0: 20 74 6f 20 65 61 72 74 68 2e 00 00 00 00 00 00
00e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

nombre de decodages: 5

Credits

Decodage gr-satellites v3.6.0 (Daniel Estevez)

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