When a position gyro is used in the pitch plane the missile is usually launched at a set elevation. 當位置陀螺用在俯仰通道上的時候,導彈通常以一個設定的仰角發射。
Back at the lab, technicians assign the frames latitude, longitude and elevation coordinates from U.S.Geological Survey ground references and scan dozens of frames into a computer. 回到實驗室,技術人員會參考美國地質調查所的地面資料,指出畫面拍攝的經緯度與仰角坐標,并把數十張畫面掃描到電腦里。