{"action":"opened","issue":{"url":"https://api.github.com/repos/IonosatMicro/ionosat-docs/issues/7","repository_url":"https://api.github.com/repos/IonosatMicro/ionosat-docs","labels_url":"https://api.github.com/repos/IonosatMicro/ionosat-docs/issues/7/labels{/name}","comments_url":"https://api.github.com/repos/IonosatMicro/ionosat-docs/issues/7/comments","events_url":"https://api.github.com/repos/IonosatMicro/ionosat-docs/issues/7/events","html_url":"https://github.com/IonosatMicro/ionosat-docs/issues/7","id":208707950,"number":7,"title":"Orbit data interpolation","user":{"login":"landswellsong","id":2434329,"avatar_url":"https://avatars.githubusercontent.com/u/2434329?v=3","gravatar_id":"","url":"https://api.github.com/users/landswellsong","html_url":"https://github.com/landswellsong","followers_url":"https://api.github.com/users/landswellsong/followers","following_url":"https://api.github.com/users/landswellsong/following{/other_user}","gists_url":"https://api.github.com/users/landswellsong/gists{/gist_id}","starred_url":"https://api.github.com/users/landswellsong/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/landswellsong/subscriptions","organizations_url":"https://api.github.com/users/landswellsong/orgs","repos_url":"https://api.github.com/users/landswellsong/repos","events_url":"https://api.github.com/users/landswellsong/events{/privacy}","received_events_url":"https://api.github.com/users/landswellsong/received_events","type":"User","site_admin":false},"labels":[{"id":542867935,"url":"https://api.github.com/repos/IonosatMicro/ionosat-docs/labels/potential","name":"potential","color":"5319e7","default":false},{"id":406242609,"url":"https://api.github.com/repos/IonosatMicro/ionosat-docs/labels/question","name":"question","color":"cc317c","default":true}],"state":"open","locked":false,"assignee":{"login":"elpiankova","id":1233763,"avatar_url":"https://avatars.githubusercontent.com/u/1233763?v=3","gravatar_id":"","url":"https://api.github.com/users/elpiankova","html_url":"https://github.com/elpiankova","followers_url":"https://api.github.com/users/elpiankova/followers","following_url":"https://api.github.com/users/elpiankova/following{/other_user}","gists_url":"https://api.github.com/users/elpiankova/gists{/gist_id}","starred_url":"https://api.github.com/users/elpiankova/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/elpiankova/subscriptions","organizations_url":"https://api.github.com/users/elpiankova/orgs","repos_url":"https://api.github.com/users/elpiankova/repos","events_url":"https://api.github.com/users/elpiankova/events{/privacy}","received_events_url":"https://api.github.com/users/elpiankova/received_events","type":"User","site_admin":false},"assignees":[{"login":"elpiankova","id":1233763,"avatar_url":"https://avatars.githubusercontent.com/u/1233763?v=3","gravatar_id":"","url":"https://api.github.com/users/elpiankova","html_url":"https://github.com/elpiankova","followers_url":"https://api.github.com/users/elpiankova/followers","following_url":"https://api.github.com/users/elpiankova/following{/other_user}","gists_url":"https://api.github.com/users/elpiankova/gists{/gist_id}","starred_url":"https://api.github.com/users/elpiankova/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/elpiankova/subscriptions","organizations_url":"https://api.github.com/users/elpiankova/orgs","repos_url":"https://api.github.com/users/elpiankova/repos","events_url":"https://api.github.com/users/elpiankova/events{/privacy}","received_events_url":"https://api.github.com/users/elpiankova/received_events","type":"User","site_admin":false},{"login":"landswellsong","id":2434329,"avatar_url":"https://avatars.githubusercontent.com/u/2434329?v=3","gravatar_id":"","url":"https://api.github.com/users/landswellsong","html_url":"https://github.com/landswellsong","followers_url":"https://api.github.com/users/landswellsong/followers","following_url":"https://api.github.com/users/landswellsong/following{/other_user}","gists_url":"https://api.github.com/users/landswellsong/gists{/gist_id}","starred_url":"https://api.github.com/users/landswellsong/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/landswellsong/subscriptions","organizations_url":"https://api.github.com/users/landswellsong/orgs","repos_url":"https://api.github.com/users/landswellsong/repos","events_url":"https://api.github.com/users/landswellsong/events{/privacy}","received_events_url":"https://api.github.com/users/landswellsong/received_events","type":"User","site_admin":false}],"milestone":null,"comments":0,"created_at":"2017-02-19T10:15:35Z","updated_at":"2017-02-19T10:15:35Z","closed_at":null,"body":"From an offline conversation, dumping from memory not to forget. (@elpiankova/@helen please correct me if I got it wrong or forgot some details)\r\n\r\nPOTENTIAL's data discretisation was uneven throughout the session because of limited storage capacity. As such, positional telemetry data was collected at 1 Hz near the data downlink point and 0.1 Hz elsewhere. The way the data file is constructed, this results in the blocks of the same reading repeating over 10 seconds, then switching to the next point when the satellite flies over low frequency path. Possible countermeasures:\r\n- [ ] Remove duplicated points (IonosatMicro/promis-backend#19) or mark them as invalid.\r\n- [ ] Devise and document the approach of the path reconstruction (interpolation over straight line because #yolo, fitting a curve, etc).\r\n- [ ] Decide whether PROMIS has to do this in runtime or whether this is the data import process.\r\n"}}
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