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                          3. 空中節點的測時差定位算法
                            郭曉雪1,張亞1,郭曉雨2,王維1,田洪明3
                            1.中北大學 機電工程學院,山西 太原 030051;2.內蒙古農業大學,內蒙古 010010;
                            3.中國人民解放軍 66440部隊,河北 石家莊 050081

                             

                            摘要:用時差法對空中節點進行定位,地面至少需要三個或更多個地面基站工作,而地面基站的布站形式對定位的精度又有很大影響。為確保定位精度與布站形式有關,要求在相同的測試條件下進行測試。時差定位處理地面基站發送到節點的信號的到達時間差測量數據對空中節點進行定位的。要確定三維空間的任一節點至少需要四個站形成三個單邊雙曲面來確定節點的位置。隨后用數學方法求解出模型的定位精度。最后對幾種不同的布站進行了仿真,得到了哪種布站精度高。
                            關鍵詞:時差定位;定位精度;時間同步
                            中圖分類號:TN961            文獻標識碼:A          文章編號:10060316 (2012) 06000704
                            The TDOA location algorithm of air node
                            GUO Xiao-xue1,ZHANG Ya1,GUO Xiao-yu2,WANG Wei1,TIAN Hong-ming3
                            ( 1. College of Mechatronic Engineering, The North University of China, Taiyuan 030051, China;
                             2. The West Inner Mongolia Agriculture University, Mongolia 010010
                            , China;
                            3. 66440 Troops, The Chinese People's Liberation Army, Shijiazhuang 050081, China )

                             

                            AbstractWith the method of time difference to the air node location, the ground need three or more ground base station work , and the form of the base station to the positioning of the cloth precision and has very big effect. In order to ensure the positioning precision and cloth stood on the form, the requirements in the same test conditions test. TDOA location processing ground base station transmission to the node of the signal to the detection data of the time to air node location. To determine the three dimensional space of any node will need at least four stood form three unilateral hypoid to determine the position of the node. Then use mathematical method to solve the accuracy of model. Finally determine which has high precision through simulation the several different positions.
                            Key wordsTDOA location;location accuracy;time synchronization


                            ———————————————
                            收稿日期:2011-11-24
                            作者簡介:郭曉雪(1987-),女,內蒙古興安盟人,碩士研究生,主要研究方向為目標傳感探測與識別技術。

                             

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