{"action":"created","issue":{"url":"https://api.github.com/repos/PX4/Firmware/issues/4714","repository_url":"https://api.github.com/repos/PX4/Firmware","labels_url":"https://api.github.com/repos/PX4/Firmware/issues/4714/labels{/name}","comments_url":"https://api.github.com/repos/PX4/Firmware/issues/4714/comments","events_url":"https://api.github.com/repos/PX4/Firmware/issues/4714/events","html_url":"https://github.com/PX4/Firmware/issues/4714","id":158000657,"number":4714,"title":"LPE altitude drift","user":{"login":"tumbili","id":7610489,"avatar_url":"https://avatars.githubusercontent.com/u/7610489?v=3","gravatar_id":"","url":"https://api.github.com/users/tumbili","html_url":"https://github.com/tumbili","followers_url":"https://api.github.com/users/tumbili/followers","following_url":"https://api.github.com/users/tumbili/following{/other_user}","gists_url":"https://api.github.com/users/tumbili/gists{/gist_id}","starred_url":"https://api.github.com/users/tumbili/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tumbili/subscriptions","organizations_url":"https://api.github.com/users/tumbili/orgs","repos_url":"https://api.github.com/users/tumbili/repos","events_url":"https://api.github.com/users/tumbili/events{/privacy}","received_events_url":"https://api.github.com/users/tumbili/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":{"login":"jgoppert","id":473772,"avatar_url":"https://avatars.githubusercontent.com/u/473772?v=3","gravatar_id":"","url":"https://api.github.com/users/jgoppert","html_url":"https://github.com/jgoppert","followers_url":"https://api.github.com/users/jgoppert/followers","following_url":"https://api.github.com/users/jgoppert/following{/other_user}","gists_url":"https://api.github.com/users/jgoppert/gists{/gist_id}","starred_url":"https://api.github.com/users/jgoppert/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jgoppert/subscriptions","organizations_url":"https://api.github.com/users/jgoppert/orgs","repos_url":"https://api.github.com/users/jgoppert/repos","events_url":"https://api.github.com/users/jgoppert/events{/privacy}","received_events_url":"https://api.github.com/users/jgoppert/received_events","type":"User","site_admin":false},"milestone":null,"comments":9,"created_at":"2016-06-01T20:34:11Z","updated_at":"2016-06-06T20:40:37Z","closed_at":null,"body":"@jgoppert I just got a log from a user who is reporting considerable height drift during his flight.\r\nBelow you can see a plot which compares raw baro alt with gps alt and the estimated height.\r\nNote that the baro / gps solutions are very close to the initial altitude at the end, however, the estimated height was suspect to a large drift.\r\nLog: http://logs.uaventure.com/view/6Joqho5BrqD5vfoVPY9AUT\r\n \r\n![lpe_height_drift](https://cloud.githubusercontent.com/assets/7610489/15724779/e8ca9ed2-2848-11e6-903c-beda0c18d27d.png)\r\n"},"comment":{"url":"https://api.github.com/repos/PX4/Firmware/issues/comments/224081286","html_url":"https://github.com/PX4/Firmware/issues/4714#issuecomment-224081286","issue_url":"https://api.github.com/repos/PX4/Firmware/issues/4714","id":224081286,"user":{"login":"jgoppert","id":473772,"avatar_url":"https://avatars.githubusercontent.com/u/473772?v=3","gravatar_id":"","url":"https://api.github.com/users/jgoppert","html_url":"https://github.com/jgoppert","followers_url":"https://api.github.com/users/jgoppert/followers","following_url":"https://api.github.com/users/jgoppert/following{/other_user}","gists_url":"https://api.github.com/users/jgoppert/gists{/gist_id}","starred_url":"https://api.github.com/users/jgoppert/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jgoppert/subscriptions","organizations_url":"https://api.github.com/users/jgoppert/orgs","repos_url":"https://api.github.com/users/jgoppert/repos","events_url":"https://api.github.com/users/jgoppert/events{/privacy}","received_events_url":"https://api.github.com/users/jgoppert/received_events","type":"User","site_admin":false},"created_at":"2016-06-06T20:40:37Z","updated_at":"2016-06-06T20:40:37Z","body":"@LorenzMeier 10 readings with eph < 3, n_sat >= 6\r\n\r\nMaybe epv and lock type should also be a requirement?\r\n\r\nhttps://github.com/PX4/Firmware/blob/master/src/modules/local_position_estimator/sensors/gps.cpp#L55"}}
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