POCL ISS
Sommaire
Présentation
Ce POCL pointe un indicateur vers la localisation de la station spatiale internationale ou qu'elle soit, en temps réel !
Ressources documentaire - recherche Web
Objet et code
- Lien vers le site parseerror.net qui présente un objet pointant vers l'ISS en temps réel : https://www.parseerror.net/portfolio/iss-tracker/
- Lien vers le dépôt contenant le code ArduinoP13 permettant de prédire l’orbite d'un satellite sur le site github.com : https://github.com/dl9sec/ArduinoP13/blob/master/src/ArduinoP13.cpp
Nouveau dépot : https://github.com/virtualrobotix/sophyai.space/tree/f3bf908e4bec6af67c5d599610e9de4205667f40/lib/ArduinoP13-master
API
- Lien vers un site qui donne la position de l'ISS en direct : https://www.agences-spatiales.fr/en-direct-de-iss/position-de-liss-direct/
- Lien vers un site qui donne une API pour obtenir la position de l'ISS : https://wheretheiss.at/w/developer
Faire pointer un doigt ?
- Comme celui-ci ? https://www.thingiverse.com/thing:287224
Exploration
Comprendre
TLE Data : https://fr.wikipedia.org/wiki/Param%C3%A8tres_orbitaux_%C3%A0_deux_lignes sous cette forme :
const char *tleName = "ISS (ZARYA)";
const char *tlel1 = "1 25544U 98067A 19132.94086806 .00001341 00000-0 28838-4 0 9999";
const char *tlel2 = "2 25544 51.6422 176.3402 0001360 345.7469 23.7758 15.52660993169782";
Les Données
Source : https://wheretheiss.at/w/developer
A utiliser modérément pour ne pas saturer le service : l'URL d'interrogation de la position actuelle de l'ISS : https://api.wheretheiss.at/v1/satellites/25544
résultat :
{
"name":"iss",
"id":25544,
"latitude":-27.65184042651,
"longitude":10.565844177722,
"altitude":426.77410854794,
"velocity":27556.470746819,
"visibility":"eclipsed",
"footprint":4541.7677586404,
"timestamp":1644267080,
"daynum":2459618.3689815,
"solar_lat":-15.105669544751,
"solar_lon":230.70217623035,
"units":"kilometers"
}
Pour : https://api.wheretheiss.at/v1/satellites/25544/tles
{
"requested_timestamp": 1364084064,
"tle_timestamp": 1363892433,
"id": "25544",
"name": "iss",
"header": "ISS (ZARYA)",
"line1": "1 25544U 98067A 13080.79204657 .00024647 00000-0 40606-3 0 4540",
"line2": "2 25544 51.6478 182.2316 0011718 59.7125 80.2831 15.52100765821132"
}
Le programme Arduino
En utilisant le code exemple ArduinoP13, on obtient en sortie :
Prediction for ISS (ZARYA) at DL9SEC (MAP 1150x609: x = 606,y = 139): 2019-05-16 21:01:40 -> Lat: 43.2423 Lon: 15.1522 (MAP 1150x609: x = 623,y = 158) Az: 142.51 El: 26.27 RX: 145.799966 MHz, TX: 437.800101 MHz Satellite footprint map coordinates: 0: x = 623, y = 90 1: x = 650, y = 92 2: x = 673, y = 98 3: x = 691, y = 107 4: x = 703, y = 118 5: x = 710, y = 130 6: x = 712, y = 143 7: x = 711, y = 156 8: x = 708, y = 168 9: x = 702, y = 180 10: x = 694, y = 191 11: x = 684, y = 201 12: x = 674, y = 210 13: x = 662, y = 216 14: x = 649, y = 221 15: x = 636, y = 224 16: x = 623, y = 225 17: x = 610, y = 224 18: x = 597, y = 221 19: x = 584, y = 216 20: x = 572, y = 210 21: x = 561, y = 201 22: x = 552, y = 191 23: x = 544, y = 180 24: x = 538, y = 168 25: x = 534, y = 156 26: x = 534, y = 143 27: x = 536, y = 130 28: x = 543, y = 118 29: x = 555, y = 107 30: x = 573, y = 98 31: x = 596, y = 92 Sun -> Lat: 19.1851 Lon: -136.3273 (MAP 1150x609: x = 139,y = 239) Az: 0.00 El: 0.00 Sunlight footprint map coordinates: 0: x = 714, y = 64 1: x = 614, y = 74 2: x = 549, y = 98 3: x = 510, y = 129 4: x = 485, y = 162 5: x = 466, y = 197 6: x = 451, y = 232 7: x = 438, y = 268 8: x = 427, y = 304 9: x = 415, y = 340 10: x = 402, y = 376 11: x = 387, y = 411 12: x = 368, y = 446 13: x = 343, y = 479 14: x = 304, y = 510 15: x = 239, y = 534 16: x = 139, y = 544 17: x = 39, y = 534 18: x = 1124, y = 510 19: x = 1085, y = 479 20: x = 1060, y = 446 21: x = 1041, y = 411 22: x = 1026, y = 376 23: x = 1013, y = 340 24: x = 1002, y = 304 25: x = 990, y = 268 26: x = 977, y = 232 27: x = 962, y = 197 28: x = 943, y = 162 29: x = 918, y = 129 30: x = 879, y = 98 31: x = 814, y = 74 Finished
