geo here 中文意思是什麼
geo here
解釋
巖石圈-
An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process
飛行器軌道機動過程中，為跟蹤、定位機動目標和干預機動控制過程，需要統計處理離散的雷達觀測量實時估計推進發動機的推力，進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型，推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量，應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力 -
With unique geographical location and rich energy which have brought dual significance for the famous geopolitical theorist markinder ’ s " mainland heart " theory, the geopolitical center and the 21st century energy center combined here, the central asia ’ s geo - strategic position was highlighted again after the disintegration of the soviet union. powers in the world are active in the region, and the central asia became the focus of concern of the international community
蘇聯解體后，中亞的地緣戰略地位逐漸突顯出來，獨特的地理位置和豐富的能源，使麥金德的「大陸心臟」學說具有雙重意義:地緣政治中心和21世紀的能源中心合二為一，世界各種力量都積極地進入這一地區，使之成為國際社會關注的中心。
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