作者查詢 / mpcb
作者 mpcb 在 PTT 全部看板的留言(推文), 共5525則
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5F推:推… 這種網址格式比較好140.115.34.114 08/17
1F推:推這個作者140.115.34.114 08/16
1F推:隨身碟內必備軟體 xliu+liu.tab140.115.34.114 08/16
2F推:Regrese a mi ? 西文140.115.34.114 08/16
1F推:在電梯中金哈克曼要他把鞋子(?)脫掉,因為裡面有GPS140.115.34.114 08/16
2F→:然後換電梯。這段我有記錯嗎?140.115.34.114 08/16
3F→:也可能是我記錯段了... 我記得有個跟GPS有關的bug140.115.34.114 08/16
1F推:http://www.obs-nice.fr/accueil/english/140.115.34.114 08/16
2F推:google map http://0rz.net/180B0140.115.34.114 08/16
1F推:台南火車站那間嗎? 以前在那邊的某個做遙測的老師140.115.34.114 08/16
2F→:會在課堂上講這部電影的漏洞140.115.34.114 08/16
2F→:這是電影… 連GPS都可以追到電梯裡面了140.115.34.114 08/15
3F→:這個應該是小問題....140.115.34.114 08/15
4F推:quickbird每張圖 16.5×16.5km^2 地球周長~3.8e4km140.115.34.114 08/15
5F→:你算算要拍完全球要花多少張圖140.115.34.114 08/15
6F→:它的高度是450km,周期是93.4 min140.115.34.114 08/15
7F→:再回樓上的,同步衛星不適合這種用途,因為影像會140.115.34.114 08/15
8F→:因為衛星固定,而在偏離中心的位置產生嚴重像差140.115.34.114 08/15
9F推:補充一下,提到週期是要說,就算持續調整衛星姿態140.115.34.114 08/15
10F→:對同一目標也只能追蹤46分鐘左右,還要再扣掉角度不140.115.34.114 08/15
11F→:佳的時間(以45°算,約略一半)140.115.34.114 08/15
14F推:樓上說的沒錯,同步高度3.6e4km,只能拍≦70°區域140.115.34.114 08/16
15F→:這點通常可以不理,因為那個區域沒有頻繁活動140.115.34.114 08/16
16F→:就算拍不到,用其他衛星的圖來補也還ok...140.115.34.114 08/16
17F→:但是,離衛星方位大於50°以上的區域像差就........140.115.34.114 08/16
18F→:更正,說像差不如說影像變形140.115.34.114 08/16
19F→:我寫錯了,是≦80° (算出來差不多79點多) orz140.115.34.114 08/16
3F→:回樓上 我看過了,也找過該公司的網頁了140.115.34.114 08/15