全球定位系統已被廣泛地應用於航空照相，並且全球定位系統可提供地面控制點精確的位置資訊，本研究將把GPS應用於照相控制上面。
本研究的主要目的是設計一簡單有效率的裝置整合於筆記型電腦上，經由電腦程式運算拍照時間間格並執行拍照程序。拍攝控制模式分為兩種模式:1)半自動航照模式及2)全自動航照模式。後處理的解算方式可以提供每張航照更精確的像址點。
實驗結果顯示判定拍照時間的解析度為千分之一秒，像址點的定位經度可達公尺級，在半自動航照模式可提供可用的相片疊幅航照，而全自動航照模式可提供較佳且較固定相片疊幅的航照。

The Global Positioning System (GPS) has been widely applied to aero-photoing. The system can provide very accurate position information for ground control points. This research extends the GPS application to the photo-shooting control.
The main goal of this study is to design a simple but effective control device combined with a notebook PC. The PC will compute the shooting timings so that the shooting procedure can be performed. There are two shooting control modes: 1) semi-auto and 2) full auto. The post processing method is also performed to compute the accurate center position for each photo.
The results show that the shooting time can be determined to be in mini-second with center position in meter level. The semi-auto mode provides fair overlap results. The full auto mode gives the best overlap solutions.

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