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題名 | 應用動態學習神經網路於GPS定位精度及最佳化路徑規劃研究=The Accuracies of GPS Positioning Applied by Dynamic Learning Neural Network and Optimal Planning for Its Path |
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作者姓名(中文) | 賴瑞麟; 陳元炘; 陳漢臣; 戴正芳; | 書刊名 | 聯合學報 |
卷期 | 15 1997.11[民86.11] |
頁次 | 頁345-363 |
分類號 | 440.98 |
關鍵詞 | 數位地圖; 動態學習; 神經網路; 自動導航; DGPS; Digital map; Dynamic learning; Neural network; Automatic navigation; |
語文 | 中文(Chinese) |
中文摘要 | GPS( Global Positioning System )係以接收美國國防部GPS通訊衛星所發射之 P ( Precision )或 C/A ( Coarse/Acquisition )碼得到量測點之座標,由於大氣層中 電離層及對流層效應,會引起測量誤差,因此目前皆以 DGPS 差分定位法來修正量測誤差, 提昇精確度。 本研究中係以動態學習( D. L. )神經網路應用於 GPS 之定位系統,先產生神經網路所需 的訓練資料,可以藉由測試區域隨機產生可能接收到之 4-6 顆 GPS 衛星的座標範圍,並由 其與地面座標間之關係式得到地面接收器的座標;經訓練後,由衛星所接收到之數組座標信 號,即能透過 D. L. 得到一組真實之座標值,改善其精準度。 在個人電腦上建立數位地圖 之資料庫,成為地理資訊系統( GIS ), GPS 接收到之定位點可映對至數位地圖上,再加 上最佳化路徑規畫,即成為汽車或船艦之動態定位 KGPS ( Kinematics GPS )。本計畫則 是設計全球定位接收系統,加入 D.L. 法則,配合所建立之苗栗數位地圖來完成自動定位系 統,此整合系統在自動導航上有其實用性。 |
英文摘要 | The Global Positioning System (GPS) was developed to receiving and decoding of P (Precision) or C/A (Coarse/Acquisition) code transmitted from the GPS satellites of the Department of Defense, USA, and obtain the local coordinate of positioning point. However, exist a ionosphere and troposphere delay effect will induce some undesirable common error during the process of receiving GPS coordinate. Therefor, the differential GPS (DGPS) was often adopted to minimize the measurement error and to improve the accuracy. In this study, a dynamic learning (DL) neural network is applied to retrieve the receiver's coordinate. The required training data is generated from a set of satellites' coordinates received within the test site. After training the receiver's coordinate can be obtained using DL with the input of the received satellites' coordinates. An improvement of the retrieval of the receiver's coordinate is seen in the experimental results. Geographic Information System (GIS) which establish a database information of the digital map system at the personal computer. The receiver's coordinate is then mapped onto a digital map. Integrated with an optimal planning for the kinematics path, a kinematics GPS (KGPS) guidance system is useful for guiding vehicles. An automatic positioning system which consists of a GPS receiving system, the dynamic learning algorithm, and the digital map system is proposed in this study. This integration system is realized and applied for automatic navigation. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。