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題 名 | The Effect of Parameter Variation on Initial Leveling Accuracy of a Strapdown Inertial Navigation System=系統參數變化於固裝式慣性導航系統初始調平精度之影響 |
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作 者 | 陳正衡; | 書刊名 | 中正嶺學報 |
卷 期 | 21:2 1993.01[民82.01] |
頁 次 | 頁61-74 |
分類號 | 447.5 |
關鍵詞 | 系統; 固裝式; 參數變化; 慣性; 精度; 調平; 導航系統; 調平校準; 自動回歸平均; 最小平方估測; 慣性平臺; 參數識別; 羅經校準; Parameter variation; Leveling alignment; ARMA; LSE inertial platform; Parameter identification gyrocompassing techniques; |
語 文 | 英文(English) |
中文摘要 | 本文旨在研討運動載具於接動下慣性平台之初始調平校準,並說明在 估測過程中系統參數之決定與參數變化之影響。發展一四階模式來描述平台運 動,含載具運動與初始調平誤差。由既得之輸入與輸出資料。使用自動回歸平均 模式與最小平方估測法求出一定精度之系統參數,更進而詳細說明並分析參數變 化之影響。應用卡曼濾波器技術,於估測過程中,可獲得系統最佳之狀態變數。 包括參數識別之調平過程較之傳統的「羅經校準法」需時更少。經由計算機模擬, 結果顯示此法確能改善調平所需時間與精度。 |
英文摘要 | This paper is concerned with the determination of system parameter and the effect ofparameter variation in estimation process to the initial leveling alignment of inertial platforms subjected to random base motion also has been considered. A fourth order realisticmodel has been developed to describe the platform initial leveling error and its base motion. Using ARMA model with Least Squares Estimate from experimental input-outputdata, the system parameter can be determined within definite accuracy. Effects of parameter variation were presented and analyzed in detail. The system states are obtained bythe application of Kalman filtering techniques for estimation process. The leveling processincluding parameter identification can be carried out in more less time in comparing to conventional "Gyrocompassing Techniques." Extensive computer simulation has demonstratedthat this method does improve the speed and accuracy of leveling. |
本系統中英文摘要資訊取自各篇刊載內容。